FlightGear wiki - User contributions [en]

Fairchild Republic A-10 Thunderbolt II, OPRF Version

2024-05-04T10:52:13Z

Zorka: Updates

The '''Fairchild A-10 Thunderbolt II''' (aka '''Warthog''') offers a wide variety of features and controls. Special features include the ability to simulate ordnance use, and a detailed 3D textured cockpit. Many of the A-10's flight systems are modeled as well, such as support for [[Tactical_Air_Navigation|TACAN]].
{{infobox aircraft
| name = Fairchild A-10
| hangar = OPRF
| aircraft = A-10
| image = A-10-3.png
| alt = The "Warthog"
| image2 = A-1-1.png
| alt2 = A-10 Warthog Taking off from KXTA
| type = Military aircraft/Attack aircraft
| config = Low wing aircraft
| propulsion = Twinjet
| manufacturer = Fairchild Republic
| authors = Lee Elliott/Alexis Bory/David Bastien/Pinto/Steve Brown/Rudolf/J Maverick 16/Zorka/Eagle01/Wolf
| fdm = YASim
| fgname = A-10
| status-fdm = 4
| status-systems = 5
| status-cockpit = 4
| status-model = 4
| ready = airrefuel/Emesary
| wikipedia = Fairchild Republic A-10 Thunderbolt II
| navbar = 1
|download=https://github.com/l0k1/A-10}}
This is the version used by [[Operation Red Flag|OPRF (Operation Red Flag)]] and is the branch that is being actively developed.

==About the aircraft==
The Fairchild Republic A-10, nicknamed "Warthog," is a U.S. single-seat, twin-engine, very robust jet aircraft designed for ground attack.
==User's Manual==
In the current version, the aircraft simulation begins with the aircraft powered down and [[Emesary|Emesary damage]] enabled.

The electrical power systems and the {{Abbr|APU's|Auxiliary Power Unit's}} operation are simulated to a large extent. [[Howto:Aerial_refueling|Mid-air refueling]] is also implemented.

The navigation instruments are [[Tactical_Air_Navigation|TACAN]], {{Abbr|ILS|Instrument Landing System}} and also a VHF so you can have homing on a VOR station.

Several external loads are available and the [[HUD]] provides a {{abbr|CCIP|Continuous Computed Impact Point}}.

== Keybinds ==
<code>j/k</code> Extend/Retract Speedbrakes

<code>[/]</code> Extend/Retract Flaps

<code>f</code> Slats

<code>e</code> GAU-8 Trigger

<code>E</code> Drop Ordnance

<code>Shift+q</code> Flares

===Electrical power with APU starting procedure===
[[File:A-10-electrical-power-control-panel.jpg|thumb|Electrical control panel]]At FlightGear startup, both electrical power and APU are shut down and there is no external power supplied.

You, might see, early on, some needles spinning back on the engines gauges panel and the VSI ... this is only a software initialization artifact.

So, look at the right console, there is a panel with 6 switches, that's the Main Electrical Control Panel. Hit Ctrl-c and you will have a view of where to click.

Let's connect the battery: switch on the battery switch. A few indicators should light up, but not all of them. Now with the battery connected you can start the APU.

The APU start/stop switch is located near the throttle on the left console. Switch it on. Now check the APU's tachometer and EGT on the engine gauge panel.

If the APU has started successfuly you should see the EGT (Exhaust Gas Temperature) rapidly climb to 800/900 °C and then stabilize when the RPMs reach 60%.[[File:A-10-throttle-engine-start.jpg|thumb|Throttle, engines operation and APU panel]]Now the APU has sufficient RPMs to provide electrical power through its generator. So let's turn on the APU generator. This one is on the main electrical control panel, upper left corner of the electrical control panel, right console again.

With the APU generator powered up most of the instruments receive electrical power and now the AOA]] indexer lights up and the HSI (the compass) and ADI (artificial horizon) look much better.

At 85% RPM the APU supplies enough bleed air to start the engines.

[[File:engine-gauges.jpg|thumb|APU running, Engines gauges at stop.]]
===Engines starting procedure===
Now that we have minimum electrical power and bleed air supplied by the APU, starting the engines is straight forward.

Just click on one of the throttle rails (Ctrl-c to see them), the throttle will move from stop to idle and the engine start. Wait for the starting cycle light to turn off, turn on the corresponding generator and repeat with the second engine.

Now the complete electrical circuit is powered and you can stop the APU to save some fuel. It wont be useful anymore. (This could change with future development of engines failures...)

===Fuel System===
FlightGear A-10 starts with all internal tanks full.

2 wing tanks (left and right), 2 fuselage tanks: left main (aft) linked to left system and right main (forward) linked to right system, up to 3 external tanks (2 wings and 1 fuselage).

Normally the left wing and left main tanks feed the left engine and the APU. The right wing and right main tanks feed the right engine. The two feed lines can be interconnected by opening the cross feed valve ('''E''' switch).

The wing boost pumps ('''G''' switch) supply the respective engines until the wing tanks are empty, then the wing boost pumps automatically shut off. The main boost pumps then supply the respective engines with the remainder fuel in main tanks.

In case of a wing tank boost pump failure, the wing tank fuel will gravity feed its respective main tank if the main tank fuel level is below 600 lbs. Check valves prevent reverse fuel flow from the main tanks to the wing tanks.

In case of a main tank boost pump failure, the affected engine will suction-feed from the affected tank for all power setting up to an altitude of nearly 10,000 feet.

Unequal fuel level between left (aft) main and right (forward) main tank (imbalance superior 750 lbs) will cause a longitudinal CG shift that may exceed allowable limits. In this case, opening the valve "tank gate" create a link between the two main tanks.

Fuel from the external tanks is transfered to the wing or main tanks by pressure from the bleed air system. Wing tanks can be topped when the fuel level is below 1590 lbs. Main tanks can be topped when the fuel level is below 3034 lbs. The cycling is repeated until fuel is depleted from the external wing tanks first, and external fuselage tank secondly.

For negative G flight, collector tanks will supply the engine with sufficient fuel for 10 seconds operation at MAX power.

With fully loaded fuel tanks and a full load of armament, the A-10 is heavy--about 50,000 pounds. At this weight the plane is quite difficult to fly. Symptoms you would notice are difficult to take off, difficulty gaining altitude, difficult to manoeuvre without triggering stall warnings or actual stalls.

To avoid these problems, if you choose to equip the plane with full armament you may wish to fill the tanks only half full or so--the plane becomes much easier to fly and half fuel is still enough for a reasonably long flight.[[File:A-10-fuel-control-doc.jpg|thumb|Fuel Control panel.]]The '''Fuel Control panel''' is located on the forward part of left console. 1 lever, 4 push buttons and 8 switches are functional.

:('''A''') Fill Disable buttons, left and right wings tanks. Here fill disabled (button up showing red stripe). Refuel disabled for the wings tanks.
:('''B''') Fill Disable buttons, left and right main tanks (practically forward and aft fuselage tanks). Here fill enabled (button down hiding red stripe). Refuel enabled for the main tanks.
:('''C''') Refuel Receiver Door lever.
:('''D''') External Tanks switches, Wings and Fuselage. Set to OFF to un-pressurize external tanks
:('''E''') Cross Feed switch, allow any operating boost pump to feed both engines.
:('''F''') Tank Gate switch, open a valve linking the left (aft) and right (forward) main fuel tanks.
:('''G''') Boost Pumps (Wing)
:('''H''') Boost Pumps (Main)
:
===HUD===
[[File:A-10-hud-control-panel.jpg|thumb|HUD Control panel]]The Head Up Display is turned off by default at aircraft startup. To turn it on electrical power on at least one of the three generator is needed as it isn't wired to the battery.

The '''HUD Control panel''' is located on the upper left corner of the main instrument panel. Three knobs are functional.

:('''A''') Mode Selector Switch: Modes available are:
:* OFF
:* TEST (standard display, shows all possible HUD symbology in the actual aircraft)
:* NAV (standard display, shows only navigation-required symbology in the actual aircraft)
:* CCIP (standard display + Continually Computed Impact Point, this is very similar to the actual aircraft)
:* CCRP (standard display, + Continually Computed Release Point in the actual aircraft)
:* EXP (standard display)
:* STBY (standard display) Other than CCIP, all other modes have NAV as their placeholder. See later in Weapons System about HUD use.
:('''B''') INTEN knob: Adjust the HUD luminosity.
:('''C''') DEPR knob: Changes the vertical position of the primary aiming reticle in the HUD, There is a digital index in the HUD showing its position, range from -1.00 to 1.00 followed by the letter "D".

'''HUD Symbology:'''[[File:A-10-hud-symbology.jpg|thumb|HUD Symbology]]
:('''D''') Pitch ladder.
:('''E''') Indicated Air Speed, Kts.
:('''F''') Primary Aiming Reticle.
:('''G''') Horizon Line
:('''H''') Primary Aiming Reticle Digital index.
:('''I''') Magnetic Heading Tape.
:('''J''') Indicated Altitude in feet (ASL).
:('''K''') Radar Altitude in feet (AGL) followed by letter "R".
:('''I''') Aircraft Pitch in degrees, boxed.
:('''M''') Total Velocity Vector indicator.
:('''N''') Pointer showing the rudders deflection.
:
===Weapons system===
Weapons Currently Available:

* LAU-68 (Launcher with 7 WP rockets)
* Mk-82 (Available in single and triple racks)
* AIM-9 (A/A Missile, available in dual racks)
* AN/ALQ-131 (ECM pod, currently no use)

[[File:A-10-arm-1.jpg|thumb|Armament panel]]Be sure to have electric power before trying to use the armament panel. The gun's rounds counter ('''A''') should be lighted in blue and the HUD should be active (not required to use the weapons, but it's good to have it before you turn your weapons on).

First of all push up the Master Switch to ARM ('''B''').

To use the gun, push up the Gun Rate Switch to HI (right of the rounds counter). At the top/left of the main panel a green light indicating 'Gun Ready' will light up. Press <code>e</code> to fire the gun. Aiming is done with the <code>+</code> on the HUD.

To release the Mk-82s and fire the LAU-68s, select the green squares in the center of the weapons panel and press <code>E</code> to fire. Keep in mind that only one type of weapon can be selected at one time, and the order in which you select the pylons will affect the order in which the ordnance on them is released.

To use the AIM-9s, turn the AIM-9 Mode Knob ('''C''') to SEL (click on the right side of the knob). Now a big circle appears on the HUD symbology, that the searching aera of the AIM-9. Now select the pylons you have mounted your sidewinders on (either 0, 11, or both), and you should hear the seeker sound. This sound is only audible when an AIM-9 is available, selected and searching. Press key 'E' to fire the AIM-9

== Gallery ==
<gallery>
File:Hawg-5.png
File:Hawg-3.png
File:Hawg-1.png
File:Hawg-2.png
File:Hawg-4.png
File:A-10-2.png|A-10 using its GAU-8 30mm Gun
File:A-10 Warthog in Bombable.png|alt=A-10 in Bombable|A-10 in Bombable
File:A-10.jpg
</gallery>

== Work In Progress ==
{| class="wikitable"
|+
!Task
!Status
!Remarks
|-
|Rewrite Weapon System handling code
|Done! ✅
|
|-
|Add additional weapon loadouts (something guided? GBU-12/AGM-65?)
|{{Progressbar|percentage=90}}
|CBUs, Mk-82R, AGM-65, Mk-84 and ECM pods have been added
|-
|Paintkit fix
|Done! ✅
|
|-
|Weapons Graphical update
|Done! ✅
|
|-
|Full cockpit functionality
|{{Progressbar|percentage=60}}
|Getting there, Maverick screen still needs work...
|-
|FDM rework
|{{Progressbar|percentage=90}}
|JSB file is there, just needs some refining and implementation
|-
|Canvas HUD rewrite
|Done! ✅
|
|-
|Additional Liveries
|{{Progressbar|percentage=50}}
|Got a lot, thanks to Bat. Still need some more!
|}

<gallery>
File:A-10–clusters.png|Full load of CBU-87s
</gallery>

==See also==
[[A-10 Thunderbolt II FDM]]
==External links==
*
*A-10 Development Discord Server: https://discord.gg/RmtjmsT5vS
{{air-to-air refueling}}

Rockwell B-1B Lancer

2022-08-05T11:42:16Z

Zorka: Bringing this up to date with systems, etc.

{{infobox Aircraft
|image = B-1B.png
|name = Rockwell B-1B Lancer
|type = Military aircraft
|status-fdm = 3
|status-systems = 3
|status-cockpit = 4
|status-model = 4
|authors = Markus Zojer, Paul Jay Schrenker, NC-687, Zorka, Eagle01, Marsdolphin
|fdm = YASim
|status = Development
|hangar=https://gitlab.com/NC-687/B-1B}}

The '''Rockwell B-1B Lancer''' is a four-engine supersonic variable-geometry swing-wing, jet-powered strategic bomber used by the United States Air Force (USAF).

== Aircraft Help ==
=== Startup ===
# Switch on Battery switch (overhead/middle)
# Start APU left and/or right (overhead/right) by switching APU MODE L/R to on/start <nowiki>
NOTE: use one of the points below!</nowiki>
#* Couple left and right drive by switching L/R DRIVE to 2/4 ADS COUPLE
#* Switch on L/R BLEED AIR. If only 1 APU active, switch to CRSVR AIR to start engines in the other nacelle
# Switch on Engines (middle console/back) <nowiki>
NOTE: APU left powers engines 1,2 APU right -->3,4</nowiki>
# Switch APU off when engines are on, or after climb

=== Terrain Following Systems TER FLW ===
# Adjust clearance SET CLR (200ft increments)
#* ...A=0, B=200ft, C=400ft, D=600ft to J=2000ft
#* ...flatlands: down to 200ft, hills: 400/600ft
#* ...mountains: 800ft and above
# switch -PRTY- to TER FLW (other setting MAP)
# Toggle master switch TER FLW on
(buggy, often causes fatal errors)[[File:B-1B_2.jpg|thumb|270px|A takeoff with the [[afterburner]]s on]]
=== Terrain Avoidance Systems TER AVD ===
# Adjust obstacle clearance CLR PLN
#* ...possible settings: 0, 100, 300, 500, 1000ft
# Adjust distance RNG, currently 2.5 or 5nm
# Toggle master switch TER AVD on plane clears obstancle, stays at new alt

=== Fuel Center of Gravity Management System FCGMS ===
# Set CG SET to %MAC of desire also visible at %MAC scale as orange marker
# Switch SYS to ON CG %MAC visible as white marker works only within a certain margin, then orange and white marker are at same %MAC

=== Weapons Operation ===

# Make sure you load up your weapons from the dialog ( <code>B-1b</code> > <code>Weapon/Fuel Management</code>). You can't do this in-air!
# Switch to the OSO view (<code>ctl+v</code>). You'll see three screens:
## Top right one shows all of the bombs, their <code>ARM/SAFE</code> status, and time to drop.
## Top left one shows where your target(s) are (symbolized by a yellow circle(s))
## Bottom one is your IKB, through which you can set/modify the coords of targets.
# To Arm the bombs, select the bay you want to arm (Three verticaly-arranged buttons, labeled <code>FWD</code> (forward bay), <code>ITMD</code> (intermediate/middle bay), and <code>AFT</code> (Aft/rear bay)), click the number on the rightmost numpad of the bomb you want to arm, and click the <code>ARM</code> button on the far right of the OSO station
## If you want to, disarm the bomb for any reason, select the respective number and press the <code>SAFE</code> button, under it.
# Now that you've armed your bombs, you have three ways to select a target: via the IKB display, through the TGP, or by the <code>Targetting Computer</code> dialog.
## IKB: use the arrows to select the number position, then input the numbers using the left numpad. Position 0 is reserved for the <code>-</code> sign, use <code>0</code>/<code>1</code> to toggle that.
## TGP: <code>r</code>/<code>R</code> to select the rack, cursor click to mark the target, <code>t</code> to save it.
## Dialog: Manually input lat/lon for each rack.
# To release, press <code>BOMB</code> under the <code>STEER</code> Category (Panel on left side of the OSO station), and the rightmost <code>BOMB</code> button under <code>BOMB/NAV</code> category.
# Make sure to open the Bay doors (Lower/right part of OSO station, click the buttons to open)!
# If none of this made sense (which it probably won't, so don't get disappointed), see here: https://www.youtube.com/watch?v=Eg26k9TTdz8

== See Also ==
[[Convair B-58]]
== External links ==
* [http://forum.flightgear.org/viewtopic.php?t=262 The forum topic]
* Discord Development server: https://discord.gg/RbWACT8jUX

[[Category:Bomber aircraft]]
[[Category:Variable-sweep wing aircraft]]

Fairchild Republic A-10 Thunderbolt II, OPRF Version

2022-06-09T15:36:18Z

Zorka: updates

The '''Fairchild A-10 Thunderbolt II''' (aka '''Warthog''') offers a wide variety of features and controls. Special features include the ability to simulate ordnance use, and a detailed 3D textured cockpit. Many of the A-10's flight systems are modeled as well, such as support for [[Tactical_Air_Navigation|TACAN]].
{{infobox aircraft
| name = Fairchild A-10
| hangar = OPRF
| aircraft = A-10
| image = A-10-3.png
| alt = The "Warthog"
| image2 = A-1-1.png
| alt2 = A-10 Warthog Taking off from KXTA
| type = Military aircraft/Attack aircraft
| config = Low wing aircraft
| propulsion = Twinjet
| manufacturer = Fairchild Republic
| authors = Lee Elliott/Alexis Bory/David Bastien/Pinto/Steve Brown/Rudolf/J Maverick 16/Zorka/Eagle01/Wolf
| fdm = YASim
| fgname = A-10
| status-fdm = 4
| status-systems = 5
| status-cockpit = 4
| status-model = 4
| ready = airrefuel/Emesary
| wikipedia = Fairchild Republic A-10 Thunderbolt II
| navbar = 1
|download=https://github.com/l0k1/A-10}}
This is the version used by [[Operation Red Flag|OPRF (Operation Red Flag)]] and is the branch that is being actively developed.

==About the aircraft==
The Fairchild Republic A-10, nicknamed "Warthog," is a U.S. single-seat, twin-engine, very robust jet aircraft designed for ground attack.
==User's Manual==
In the current version, the aircraft simulation begins with the aircraft powered down and [[Emesary|Emesary damage]] enabled.

The electrical power systems and the {{Abbr|APU's|Auxiliary Power Unit's}} operation are simulated to a large extent. [[Howto:Aerial_refueling|Mid-air refueling]] is also implemented.

The navigation instruments are [[Tactical_Air_Navigation|TACAN]], {{Abbr|ILS|Instrument Landing System}} and also a VHF so you can have homing on a VOR station.

Several external loads are available and the [[HUD]] provides a {{abbr|CCIP|Continuous Computed Impact Point}}.

== Keybinds ==
<code>j/k</code> Extend/Retract Speedbrakes

<code>[/]</code> Extend/Retract Flaps

<code>f</code> Slats

<code>e</code> GAU-8 Trigger

<code>E</code> Drop Ordnance

<code>Shift+q</code> Flares

===Electrical power with APU starting procedure===
[[File:A-10-electrical-power-control-panel.jpg|thumb|Electrical control panel|link=https://wiki.flightgear.org/File:A-10-electrical-power-control-panel.jpg]]At FlightGear startup, both electrical power and APU are shut down and there is no external power supplied.

You, might see, early on, some needles spinning back on the engines gauges panel and the VSI ... this is only a software initialization artifact.

So, look at the right console, there is a panel with 6 switches, that's the Main Electrical Control Panel. Hit Ctrl-c and you will have a view of where to click.

Let's connect the battery: switch on the battery switch. A few indicators should light up, but not all of them. Now with the battery connected you can start the APU.

The APU start/stop switch is located near the throttle on the left console. Switch it on. Now check the APU's tachometer and EGT on the engine gauge panel.

If the APU has started successfuly you should see the EGT (Exhaust Gas Temperature) rapidly climb to 800/900 °C and then stabilize when the RPMs reach 60%.[[File:A-10-throttle-engine-start.jpg|thumb|Throttle, engines operation and APU panel|link=https://wiki.flightgear.org/File:A-10-throttle-engine-start.jpg]]Now the APU has sufficient RPMs to provide electrical power through its generator. So let's turn on the APU generator. This one is on the main electrical control panel, upper left corner of the electrical control panel, right console again.

With the APU generator powered up most of the instruments receive electrical power and now the AOA]] indexer lights up and the HSI (the compass) and ADI (artificial horizon) look much better.

At 85% RPM the APU supplies enough bleed air to start the engines.

[[File:engine-gauges.jpg|thumb|APU running, Engines gauges at stop.|link=https://wiki.flightgear.org/File:Engine-gauges.jpg]]
===Engines starting procedure===
Now that we have minimum electrical power and bleed air supplied by the APU, starting the engines is straight forward.

Just click on one of the throttle rails (Ctrl-c to see them), the throttle will move from stop to idle and the engine start. Wait for the starting cycle light to turn off, turn on the corresponding generator and repeat with the second engine.

Now the complete electrical circuit is powered and you can stop the APU to save some fuel. It wont be useful anymore. (This could change with future development of engines failures...)

===Fuel System===
FlightGear A-10 starts with all internal tanks full.

2 wing tanks (left and right), 2 fuselage tanks: left main (aft) linked to left system and right main (forward) linked to right system, up to 3 external tanks (2 wings and 1 fuselage).

Normally the left wing and left main tanks feed the left engine and the APU. The right wing and right main tanks feed the right engine. The two feed lines can be interconnected by opening the cross feed valve ('''E''' switch).

The wing boost pumps ('''G''' switch) supply the respective engines until the wing tanks are empty, then the wing boost pumps automatically shut off. The main boost pumps then supply the respective engines with the remainder fuel in main tanks.

In case of a wing tank boost pump failure, the wing tank fuel will gravity feed its respective main tank if the main tank fuel level is below 600 lbs. Check valves prevent reverse fuel flow from the main tanks to the wing tanks.

In case of a main tank boost pump failure, the affected engine will suction-feed from the affected tank for all power setting up to an altitude of nearly 10,000 feet.

Unequal fuel level between left (aft) main and right (forward) main tank (imbalance superior 750 lbs) will cause a longitudinal CG shift that may exceed allowable limits. In this case, opening the valve "tank gate" create a link between the two main tanks.

Fuel from the external tanks is transfered to the wing or main tanks by pressure from the bleed air system. Wing tanks can be topped when the fuel level is below 1590 lbs. Main tanks can be topped when the fuel level is below 3034 lbs. The cycling is repeated until fuel is depleted from the external wing tanks first, and external fuselage tank secondly.

For negative G flight, collector tanks will supply the engine with sufficient fuel for 10 seconds operation at MAX power.

With fully loaded fuel tanks and a full load of armament, the A-10 is heavy--about 50,000 pounds. At this weight the plane is quite difficult to fly. Symptoms you would notice are difficult to take off, difficulty gaining altitude, difficult to manoeuvre without triggering stall warnings or actual stalls.

To avoid these problems, if you choose to equip the plane with full armament you may wish to fill the tanks only half full or so--the plane becomes much easier to fly and half fuel is still enough for a reasonably long flight.[[File:A-10-fuel-control-doc.jpg|thumb|Fuel Control panel.|link=https://wiki.flightgear.org/File:A-10-fuel-control-doc.jpg]]The '''Fuel Control panel''' is located on the forward part of left console. 1 lever, 4 push buttons and 8 switches are functional.

:('''A''') Fill Disable buttons, left and right wings tanks. Here fill disabled (button up showing red stripe). Refuel disabled for the wings tanks.
:('''B''') Fill Disable buttons, left and right main tanks (practically forward and aft fuselage tanks). Here fill enabled (button down hiding red stripe). Refuel enabled for the main tanks.
:('''C''') Refuel Receiver Door lever.
:('''D''') External Tanks switches, Wings and Fuselage. Set to OFF to un-pressurize external tanks
:('''E''') Cross Feed switch, allow any operating boost pump to feed both engines.
:('''F''') Tank Gate switch, open a valve linking the left (aft) and right (forward) main fuel tanks.
:('''G''') Boost Pumps (Wing)
:('''H''') Boost Pumps (Main)
:
===HUD===
[[File:A-10-hud-control-panel.jpg|thumb|HUD Control panel|link=https://wiki.flightgear.org/File:A-10-hud-control-panel.jpg]]The Head Up Display is turned off by default at aircraft startup. To turn it on electrical power on at least one of the three generator is needed as it isn't wired to the battery.

The '''HUD Control panel''' is located on the upper left corner of the main instrument panel. Three knobs are functional.

:('''A''') Mode Selector Switch: Modes available are:
:* OFF
:* TEST (standard display, shows all possible HUD symbology in the actual aircraft)
:* NAV (standard display, shows only navigation-required symbology in the actual aircraft)
:* CCIP (standard display + Continually Computed Impact Point, this is very similar to the actual aircraft)
:* CCRP (standard display, + Continually Computed Release Point in the actual aircraft)
:* EXP (standard display)
:* STBY (standard display) Other than CCIP, all other modes have NAV as their placeholder. See later in Weapons System about HUD use.
:('''B''') INTEN knob: Adjust the HUD luminosity.
:('''C''') DEPR knob: Changes the vertical position of the primary aiming reticle in the HUD, There is a digital index in the HUD showing its position, range from -1.00 to 1.00 followed by the letter "D".

'''HUD Symbology:'''[[File:A-10-hud-symbology.jpg|thumb|HUD Symbology|link=https://wiki.flightgear.org/File:A-10-hud-symbology.jpg]]
:('''D''') Pitch ladder.
:('''E''') Indicated Air Speed, Kts.
:('''F''') Primary Aiming Reticle.
:('''G''') Horizon Line
:('''H''') Primary Aiming Reticle Digital index.
:('''I''') Magnetic Heading Tape.
:('''J''') Indicated Altitude in feet (ASL).
:('''K''') Radar Altitude in feet (AGL) followed by letter "R".
:('''I''') Aircraft Pitch in degrees, boxed.
:('''M''') Total Velocity Vector indicator.
:('''N''') Pointer showing the rudders deflection.
:
===Weapons system===
Weapons Currently Available:

* LAU-68 (Launcher with 7 WP rockets)
* Mk-82 (Available in single and triple racks)
* AIM-9 (A/A Missile, available in dual racks)
* AN/ALQ-131 (ECM pod, currently no use)

[[File:A-10-arm-1.jpg|thumb|Armament panel|link=https://wiki.flightgear.org/File:A-10-arm-1.jpg]]Be sure to have electric power before trying to use the armament panel. The gun's rounds counter ('''A''') should be lighted in blue and the HUD should be active (not required to use the weapons, but it's good to have it before you turn your weapons on).

First of all push up the Master Switch to ARM ('''B''').

To use the gun, push up the Gun Rate Switch to HI (right of the rounds counter). At the top/left of the main panel a green light indicating 'Gun Ready' will light up. Press <code>e</code> to fire the gun. Aiming is done with the <code>+</code> on the HUD.

To release the Mk-82s and fire the LAU-68s, select the green squares in the center of the weapons panel and press <code>E</code> to fire. Keep in mind that only one type of weapon can be selected at one time, and the order in which you select the pylons will affect the order in which the ordnance on them is released.

To use the AIM-9s, turn the AIM-9 Mode Knob ('''C''') to SEL (click on the right side of the knob). Now a big circle appears on the HUD symbology, that the searching aera of the AIM-9. Now select the pylons you have mounted your sidewinders on (either 0, 11, or both), and you should hear the seeker sound. This sound is only audible when an AIM-9 is available, selected and searching. Press key 'E' to fire the AIM-9

== Gallery ==
<gallery>
File:Hawg-5.png
File:Hawg-3.png
File:Hawg-1.png
File:Hawg-2.png
File:Hawg-4.png
File:A-10-2.png|A-10 using its GAU-8 30mm Gun
File:A-10 Warthog in Bombable.png|alt=A-10 in Bombable|A-10 in Bombable
File:A-10.jpg
</gallery>

== Work In Progress ==
{| class="wikitable"
|+
!Task
!Status
!Remarks
|-
|Rewrite Weapon System handling code
|{{Progressbar|percentage=80}}
|Currently in-progress by Eagle01
|-
|Add additional weapon loadouts (something guided? GBU-12/AGM-65?)
|{{Progressbar|percentage=90}}
|CBUs, Mk-82R, AGM-65, Mk-84 and ECM pods have been added
|-
|Paintkit fix
|Done! ✅
|Big thanks to Wolf!
|-
|Weapons Graphical update
|Done! ✅
|Big, big thanks to Eagle01
|-
|Full cockpit functionality
|{{Progressbar|percentage=60}}
|Getting there, Maverick screen still needs work...
|-
|FDM rework
|{{Progressbar|percentage=90}}
|JSB file is there, just needs some refining and implementation
|-
|Canvas HUD rewrite
|{{Progressbar|percentage=0}}
|Volunteers? Join the discord!
|-
|Additional Liveries
|{{Progressbar|percentage=50}}
|Got a lot, thanks to Bat. Still need some more!
|}

Weapons development is currently ongoing on <code>weaponsystem</code> branch of the [https://github.com/l0k1/A-10/tree/weaponsystem main repo]<gallery>
File:A-10–clusters.png|Full load of CBU-87s
</gallery>

==See also==
[[A-10 Thunderbolt II FDM]]
==External links==
*
*A-10 Development Discord Server: https://discord.gg/RmtjmsT5vS
{{air-to-air refueling}}

User:Zorka

2022-03-23T12:37:54Z

Zorka: Started making a user page for myself :)

Currently working on the A-10A and B-1b.

https://github.com/l0k1/A-10

https://gitlab.com/NC-687/B-1B

———————————

Half-done stuff:

https://gitlab.com/NC-687/O-2A

https://github.com/ZorkaA/Dromader (needs proofreading)

Fairchild Republic A-10 Thunderbolt II, OPRF Version

2022-03-17T14:52:14Z

Zorka: updated WIP

The '''Fairchild A-10 Thunderbolt II''' (aka '''Warthog''') offers a wide variety of features and controls. Special features include the ability to simulate ordnance use, and a detailed 3D textured cockpit. Many of the A-10's flight systems are modeled as well, such as support for [[Tactical_Air_Navigation|TACAN]].
{{infobox aircraft
| name = Fairchild A-10
| hangar = OPRF
| aircraft = A-10
| image = A-10-3.png
| alt = The "Warthog"
| image2 = A-1-1.png
| alt2 = A-10 Warthog Taking off from KXTA
| type = Military aircraft/Attack aircraft
| config = Low wing aircraft
| propulsion = Twinjet
| manufacturer = Fairchild Republic
| authors = Lee Elliott/Alexis Bory/David Bastien/Pinto/Steve Brown/Rudolf/J Maverick 16/Zorka/Eagle01/Wolf
| fdm = YASim
| fgname = A-10
| status-fdm = 4
| status-systems = 5
| status-cockpit = 4
| status-model = 4
| ready = airrefuel/Emesary
| wikipedia = Fairchild Republic A-10 Thunderbolt II
| navbar = 1
|download=https://github.com/l0k1/A-10}}
This is the version used by [[Operation Red Flag|OPRF (Operation Red Flag)]] and is the branch that is being actively developed.

==About the aircraft==
The Fairchild Republic A-10, nicknamed "Warthog," is a U.S. single-seat, twin-engine, very robust jet aircraft designed for ground attack.
==User's Manual==
In the current version, the aircraft simulation begins with the aircraft powered down and [[Emesary|Emesary damage]] enabled.

The electrical power systems and the {{Abbr|APU's|Auxiliary Power Unit's}} operation are simulated to a large extent. [[Howto:Aerial_refueling|Mid-air refueling]] is also implemented.

The navigation instruments are [[Tactical_Air_Navigation|TACAN]], {{Abbr|ILS|Instrument Landing System}} and also a VHF so you can have homing on a VOR station.

Several external loads are available and the [[HUD]] provides a {{abbr|CCIP|Continuous Computed Impact Point}}.

== Keybinds ==
<code>j/k</code> Extend/Retract Speedbrakes

<code>[/]</code> Extend/Retract Flaps

<code>f</code> Slats

<code>e</code> GAU-8 Trigger

<code>E</code> Drop Ordnance

<code>Shift+q</code> Flares

===Electrical power with APU starting procedure===
[[File:A-10-electrical-power-control-panel.jpg|thumb|Electrical control panel|link=https://wiki.flightgear.org/File:A-10-electrical-power-control-panel.jpg]]At FlightGear startup, both electrical power and APU are shut down and there is no external power supplied.

You, might see, early on, some needles spinning back on the engines gauges panel and the VSI ... this is only a software initialization artifact.

So, look at the right console, there is a panel with 6 switches, that's the Main Electrical Control Panel. Hit Ctrl-c and you will have a view of where to click.

Let's connect the battery: switch on the battery switch. A few indicators should light up, but not all of them. Now with the battery connected you can start the APU.

The APU start/stop switch is located near the throttle on the left console. Switch it on. Now check the APU's tachometer and EGT on the engine gauge panel.

If the APU has started successfuly you should see the EGT (Exhaust Gas Temperature) rapidly climb to 800/900 °C and then stabilize when the RPMs reach 60%.[[File:A-10-throttle-engine-start.jpg|thumb|Throttle, engines operation and APU panel|link=https://wiki.flightgear.org/File:A-10-throttle-engine-start.jpg]]Now the APU has sufficient RPMs to provide electrical power through its generator. So let's turn on the APU generator. This one is on the main electrical control panel, upper left corner of the electrical control panel, right console again.

With the APU generator powered up most of the instruments receive electrical power and now the AOA]] indexer lights up and the HSI (the compass) and ADI (artificial horizon) look much better.

At 85% RPM the APU supplies enough bleed air to start the engines.

[[File:engine-gauges.jpg|thumb|APU running, Engines gauges at stop.|link=https://wiki.flightgear.org/File:Engine-gauges.jpg]]
===Engines starting procedure===
Now that we have minimum electrical power and bleed air supplied by the APU, starting the engines is straight forward.

Just click on one of the throttle rails (Ctrl-c to see them), the throttle will move from stop to idle and the engine start. Wait for the starting cycle light to turn off, turn on the corresponding generator and repeat with the second engine.

Now the complete electrical circuit is powered and you can stop the APU to save some fuel. It wont be useful anymore. (This could change with future development of engines failures...)

===Fuel System===
FlightGear A-10 starts with all internal tanks full.

2 wing tanks (left and right), 2 fuselage tanks: left main (aft) linked to left system and right main (forward) linked to right system, up to 3 external tanks (2 wings and 1 fuselage).

Normally the left wing and left main tanks feed the left engine and the APU. The right wing and right main tanks feed the right engine. The two feed lines can be interconnected by opening the cross feed valve ('''E''' switch).

The wing boost pumps ('''G''' switch) supply the respective engines until the wing tanks are empty, then the wing boost pumps automatically shut off. The main boost pumps then supply the respective engines with the remainder fuel in main tanks.

In case of a wing tank boost pump failure, the wing tank fuel will gravity feed its respective main tank if the main tank fuel level is below 600 lbs. Check valves prevent reverse fuel flow from the main tanks to the wing tanks.

In case of a main tank boost pump failure, the affected engine will suction-feed from the affected tank for all power setting up to an altitude of nearly 10,000 feet.

Unequal fuel level between left (aft) main and right (forward) main tank (imbalance superior 750 lbs) will cause a longitudinal CG shift that may exceed allowable limits. In this case, opening the valve "tank gate" create a link between the two main tanks.

Fuel from the external tanks is transfered to the wing or main tanks by pressure from the bleed air system. Wing tanks can be topped when the fuel level is below 1590 lbs. Main tanks can be topped when the fuel level is below 3034 lbs. The cycling is repeated until fuel is depleted from the external wing tanks first, and external fuselage tank secondly.

For negative G flight, collector tanks will supply the engine with sufficient fuel for 10 seconds operation at MAX power.

With fully loaded fuel tanks and a full load of armament, the A-10 is heavy--about 50,000 pounds. At this weight the plane is quite difficult to fly. Symptoms you would notice are difficult to take off, difficulty gaining altitude, difficult to manoeuvre without triggering stall warnings or actual stalls.

To avoid these problems, if you choose to equip the plane with full armament you may wish to fill the tanks only half full or so--the plane becomes much easier to fly and half fuel is still enough for a reasonably long flight.[[File:A-10-fuel-control-doc.jpg|thumb|Fuel Control panel.|link=https://wiki.flightgear.org/File:A-10-fuel-control-doc.jpg]]The '''Fuel Control panel''' is located on the forward part of left console. 1 lever, 4 push buttons and 8 switches are functional.

:('''A''') Fill Disable buttons, left and right wings tanks. Here fill disabled (button up showing red stripe). Refuel disabled for the wings tanks.
:('''B''') Fill Disable buttons, left and right main tanks (practically forward and aft fuselage tanks). Here fill enabled (button down hiding red stripe). Refuel enabled for the main tanks.
:('''C''') Refuel Receiver Door lever.
:('''D''') External Tanks switches, Wings and Fuselage. Set to OFF to un-pressurize external tanks
:('''E''') Cross Feed switch, allow any operating boost pump to feed both engines.
:('''F''') Tank Gate switch, open a valve linking the left (aft) and right (forward) main fuel tanks.
:('''G''') Boost Pumps (Wing)
:('''H''') Boost Pumps (Main)
:
===HUD===
[[File:A-10-hud-control-panel.jpg|thumb|HUD Control panel|link=https://wiki.flightgear.org/File:A-10-hud-control-panel.jpg]]The Head Up Display is turned off by default at aircraft startup. To turn it on electrical power on at least one of the three generator is needed as it isn't wired to the battery.

The '''HUD Control panel''' is located on the upper left corner of the main instrument panel. Three knobs are functional.

:('''A''') Mode Selector Switch: Modes available are:
:* OFF
:* TEST (standard display, shows all possible HUD symbology in the actual aircraft)
:* NAV (standard display, shows only navigation-required symbology in the actual aircraft)
:* CCIP (standard display + Continually Computed Impact Point, this is very similar to the actual aircraft)
:* CCRP (standard display, + Continually Computed Release Point in the actual aircraft)
:* EXP (standard display)
:* STBY (standard display) Other than CCIP, all other modes have NAV as their placeholder. See later in Weapons System about HUD use.
:('''B''') INTEN knob: Adjust the HUD luminosity.
:('''C''') DEPR knob: Changes the vertical position of the primary aiming reticle in the HUD, There is a digital index in the HUD showing its position, range from -1.00 to 1.00 followed by the letter "D".

'''HUD Symbology:'''[[File:A-10-hud-symbology.jpg|thumb|HUD Symbology|link=https://wiki.flightgear.org/File:A-10-hud-symbology.jpg]]
:('''D''') Pitch ladder.
:('''E''') Indicated Air Speed, Kts.
:('''F''') Primary Aiming Reticle.
:('''G''') Horizon Line
:('''H''') Primary Aiming Reticle Digital index.
:('''I''') Magnetic Heading Tape.
:('''J''') Indicated Altitude in feet (ASL).
:('''K''') Radar Altitude in feet (AGL) followed by letter "R".
:('''I''') Aircraft Pitch in degrees, boxed.
:('''M''') Total Velocity Vector indicator.
:('''N''') Pointer showing the rudders deflection.
:
===Weapons system===
Weapons Currently Available:

* LAU-68 (Launcher with 7 WP rockets)
* Mk-82 (Available in single and triple racks)
* AIM-9 (A/A Missile, available in dual racks)
* AN/ALQ-131 (ECM pod, currently no use)

[[File:A-10-arm-1.jpg|thumb|Armament panel|link=https://wiki.flightgear.org/File:A-10-arm-1.jpg]]Be sure to have electric power before trying to use the armament panel. The gun's rounds counter ('''A''') should be lighted in blue and the HUD should be active (not required to use the weapons, but it's good to have it before you turn your weapons on).

First of all push up the Master Switch to ARM ('''B''').

To use the gun, push up the Gun Rate Switch to HI (right of the rounds counter). At the top/left of the main panel a green light indicating 'Gun Ready' will light up. Press <code>e</code> to fire the gun. Aiming is done with the <code>+</code> on the HUD.

To release the Mk-82s and fire the LAU-68s, select the green squares in the center of the weapons panel and press <code>E</code> to fire. Keep in mind that only one type of weapon can be selected at one time, and the order in which you select the pylons will affect the order in which the ordnance on them is released.

To use the AIM-9s, turn the AIM-9 Mode Knob ('''C''') to SEL (click on the right side of the knob). Now a big circle appears on the HUD symbology, that the searching aera of the AIM-9. Now select the pylons you have mounted your sidewinders on (either 0, 11, or both), and you should hear the seeker sound. This sound is only audible when an AIM-9 is available, selected and searching. Press key 'E' to fire the AIM-9

== Gallery ==
<gallery>
File:Hawg-5.png
File:Hawg-3.png
File:Hawg-1.png
File:Hawg-2.png
File:Hawg-4.png
File:A-10-2.png|A-10 using its GAU-8 30mm Gun
File:A-10 Warthog in Bombable.png|alt=A-10 in Bombable|A-10 in Bombable
File:A-10.jpg
</gallery>

== Work In Progress ==
{| class="wikitable"
|+
!Task
!Status
!Remarks
|-
|Rewrite Weapon System handling code
|{{Progressbar|percentage=80}}
|Currently in-progress by Eagle01
|-
|Add additional weapon loadouts (something guided? GBU-12/AGM-65?)
|{{Progressbar|percentage=90}}
|CBUs, Mk-82R, AGM-65, Mk-84 and ECM pods have been added
|-
|Paintkit fix
|Done! ✅
|Big thanks to Wolf!
|-
|Weapons Graphical update
|Done! ✅
|Big, big thanks to Eagle01
|-
|Full cockpit functionality
|{{Progressbar|percentage=60}}
|Getting there, Maverick screen still needs work...
|-
|FDM rework
|{{Progressbar|percentage=90}}
|JSB file is there, just needs some refining and implementation
|-
|Canvas HUD rewrite
|{{Progressbar|percentage=0}}
|Volunteers? Join the discord!
|}

Weapons development is currently ongoing on <code>weaponsystem</code> branch of the [https://github.com/l0k1/A-10/tree/weaponsystem main repo]<gallery>
File:A-10–clusters.png|Full load of CBU-87s
</gallery>

==See also==
[[A-10 Thunderbolt II FDM]]
==External links==
*
*A-10 Development Discord Server: https://discord.gg/RmtjmsT5vS
{{air-to-air refueling}}

File:A-10–clusters.png

2022-03-07T12:52:41Z

Zorka:

A-10 with a full loadout of CBU-87 clusterbombs

Fairchild Republic A-10 Thunderbolt II, OPRF Version

2022-03-01T08:42:20Z

Zorka: updated WIP

The '''Fairchild A-10 Thunderbolt II''' (aka '''Warthog''') offers a wide variety of features and controls. Special features include the ability to simulate ordnance use, and a detailed 3D textured cockpit. Many of the A-10's flight systems are modeled as well, such as support for [[Tactical_Air_Navigation|TACAN]].
{{infobox aircraft
| name = Fairchild A-10
| hangar = OPRF
| aircraft = A-10
| image = A-10-3.png
| alt = The "Warthog"
| image2 = A-1-1.png
| alt2 = A-10 Warthog Taking off from KXTA
| type = Military aircraft/Attack aircraft
| config = Low wing aircraft
| propulsion = Twinjet
| manufacturer = Fairchild Republic
| authors = Lee Elliott/Alexis Bory/David Bastien/Pinto/Steve Brown/Rudolf/J Maverick 16/Zorka/Eagle01/Wolf
| fdm = YASim
| fgname = A-10
| status-fdm = 4
| status-systems = 5
| status-cockpit = 4
| status-model = 4
| ready = airrefuel/Emesary
| wikipedia = Fairchild Republic A-10 Thunderbolt II
| navbar = 1
|download=https://github.com/l0k1/A-10}}
This is the version used by [[Operation Red Flag|OPRF (Operation Red Flag)]] and is the branch that is being actively developed.

==About the aircraft==
The Fairchild Republic A-10, nicknamed "Warthog," is a U.S. single-seat, twin-engine, very robust jet aircraft designed for ground attack.
==User's Manual==
In the current version, the aircraft simulation begins with the aircraft powered down and [[Emesary|Emesary damage]] enabled.

The electrical power systems and the {{Abbr|APU's|Auxiliary Power Unit's}} operation are simulated to a large extent. [[Howto:Aerial_refueling|Mid-air refueling]] is also implemented.

The navigation instruments are [[Tactical_Air_Navigation|TACAN]], {{Abbr|ILS|Instrument Landing System}} and also a VHF so you can have homing on a VOR station.

Several external loads are available and the [[HUD]] provides a {{abbr|CCIP|Continuous Computed Impact Point}}.

== Keybinds ==
<code>j/k</code> Extend/Retract Speedbrakes

<code>[/]</code> Extend/Retract Flaps

<code>f</code> Slats

<code>e</code> GAU-8 Trigger

<code>E</code> Drop Ordnance

<code>Shift+q</code> Flares

===Electrical power with APU starting procedure===
[[File:A-10-electrical-power-control-panel.jpg|thumb|Electrical control panel|link=https://wiki.flightgear.org/File:A-10-electrical-power-control-panel.jpg]]At FlightGear startup, both electrical power and APU are shut down and there is no external power supplied.

You, might see, early on, some needles spinning back on the engines gauges panel and the VSI ... this is only a software initialization artifact.

So, look at the right console, there is a panel with 6 switches, that's the Main Electrical Control Panel. Hit Ctrl-c and you will have a view of where to click.

Let's connect the battery: switch on the battery switch. A few indicators should light up, but not all of them. Now with the battery connected you can start the APU.

The APU start/stop switch is located near the throttle on the left console. Switch it on. Now check the APU's tachometer and EGT on the engine gauge panel.

If the APU has started successfuly you should see the EGT (Exhaust Gas Temperature) rapidly climb to 800/900 °C and then stabilize when the RPMs reach 60%.[[File:A-10-throttle-engine-start.jpg|thumb|Throttle, engines operation and APU panel|link=https://wiki.flightgear.org/File:A-10-throttle-engine-start.jpg]]Now the APU has sufficient RPMs to provide electrical power through its generator. So let's turn on the APU generator. This one is on the main electrical control panel, upper left corner of the electrical control panel, right console again.

With the APU generator powered up most of the instruments receive electrical power and now the AOA]] indexer lights up and the HSI (the compass) and ADI (artificial horizon) look much better.

At 85% RPM the APU supplies enough bleed air to start the engines.

[[File:engine-gauges.jpg|thumb|APU running, Engines gauges at stop.|link=https://wiki.flightgear.org/File:Engine-gauges.jpg]]
===Engines starting procedure===
Now that we have minimum electrical power and bleed air supplied by the APU, starting the engines is straight forward.

Just click on one of the throttle rails (Ctrl-c to see them), the throttle will move from stop to idle and the engine start. Wait for the starting cycle light to turn off, turn on the corresponding generator and repeat with the second engine.

Now the complete electrical circuit is powered and you can stop the APU to save some fuel. It wont be useful anymore. (This could change with future development of engines failures...)

===Fuel System===
FlightGear A-10 starts with all internal tanks full.

2 wing tanks (left and right), 2 fuselage tanks: left main (aft) linked to left system and right main (forward) linked to right system, up to 3 external tanks (2 wings and 1 fuselage).

Normally the left wing and left main tanks feed the left engine and the APU. The right wing and right main tanks feed the right engine. The two feed lines can be interconnected by opening the cross feed valve ('''E''' switch).

The wing boost pumps ('''G''' switch) supply the respective engines until the wing tanks are empty, then the wing boost pumps automatically shut off. The main boost pumps then supply the respective engines with the remainder fuel in main tanks.

In case of a wing tank boost pump failure, the wing tank fuel will gravity feed its respective main tank if the main tank fuel level is below 600 lbs. Check valves prevent reverse fuel flow from the main tanks to the wing tanks.

In case of a main tank boost pump failure, the affected engine will suction-feed from the affected tank for all power setting up to an altitude of nearly 10,000 feet.

Unequal fuel level between left (aft) main and right (forward) main tank (imbalance superior 750 lbs) will cause a longitudinal CG shift that may exceed allowable limits. In this case, opening the valve "tank gate" create a link between the two main tanks.

Fuel from the external tanks is transfered to the wing or main tanks by pressure from the bleed air system. Wing tanks can be topped when the fuel level is below 1590 lbs. Main tanks can be topped when the fuel level is below 3034 lbs. The cycling is repeated until fuel is depleted from the external wing tanks first, and external fuselage tank secondly.

For negative G flight, collector tanks will supply the engine with sufficient fuel for 10 seconds operation at MAX power.

With fully loaded fuel tanks and a full load of armament, the A-10 is heavy--about 50,000 pounds. At this weight the plane is quite difficult to fly. Symptoms you would notice are difficult to take off, difficulty gaining altitude, difficult to manoeuvre without triggering stall warnings or actual stalls.

To avoid these problems, if you choose to equip the plane with full armament you may wish to fill the tanks only half full or so--the plane becomes much easier to fly and half fuel is still enough for a reasonably long flight.[[File:A-10-fuel-control-doc.jpg|thumb|Fuel Control panel.|link=https://wiki.flightgear.org/File:A-10-fuel-control-doc.jpg]]The '''Fuel Control panel''' is located on the forward part of left console. 1 lever, 4 push buttons and 8 switches are functional.

:('''A''') Fill Disable buttons, left and right wings tanks. Here fill disabled (button up showing red stripe). Refuel disabled for the wings tanks.
:('''B''') Fill Disable buttons, left and right main tanks (practically forward and aft fuselage tanks). Here fill enabled (button down hiding red stripe). Refuel enabled for the main tanks.
:('''C''') Refuel Receiver Door lever.
:('''D''') External Tanks switches, Wings and Fuselage. Set to OFF to un-pressurize external tanks
:('''E''') Cross Feed switch, allow any operating boost pump to feed both engines.
:('''F''') Tank Gate switch, open a valve linking the left (aft) and right (forward) main fuel tanks.
:('''G''') Boost Pumps (Wing)
:('''H''') Boost Pumps (Main)
:
===HUD===
[[File:A-10-hud-control-panel.jpg|thumb|HUD Control panel|link=https://wiki.flightgear.org/File:A-10-hud-control-panel.jpg]]The Head Up Display is turned off by default at aircraft startup. To turn it on electrical power on at least one of the three generator is needed as it isn't wired to the battery.

The '''HUD Control panel''' is located on the upper left corner of the main instrument panel. Three knobs are functional.

:('''A''') Mode Selector Switch: Modes available are:
:* OFF
:* TEST (standard display, shows all possible HUD symbology in the actual aircraft)
:* NAV (standard display, shows only navigation-required symbology in the actual aircraft)
:* CCIP (standard display + Continually Computed Impact Point, this is very similar to the actual aircraft)
:* CCRP (standard display, + Continually Computed Release Point in the actual aircraft)
:* EXP (standard display)
:* STBY (standard display) Other than CCIP, all other modes have NAV as their placeholder. See later in Weapons System about HUD use.
:('''B''') INTEN knob: Adjust the HUD luminosity.
:('''C''') DEPR knob: Changes the vertical position of the primary aiming reticle in the HUD, There is a digital index in the HUD showing its position, range from -1.00 to 1.00 followed by the letter "D".

'''HUD Symbology:'''[[File:A-10-hud-symbology.jpg|thumb|HUD Symbology|link=https://wiki.flightgear.org/File:A-10-hud-symbology.jpg]]
:('''D''') Pitch ladder.
:('''E''') Indicated Air Speed, Kts.
:('''F''') Primary Aiming Reticle.
:('''G''') Horizon Line
:('''H''') Primary Aiming Reticle Digital index.
:('''I''') Magnetic Heading Tape.
:('''J''') Indicated Altitude in feet (ASL).
:('''K''') Radar Altitude in feet (AGL) followed by letter "R".
:('''I''') Aircraft Pitch in degrees, boxed.
:('''M''') Total Velocity Vector indicator.
:('''N''') Pointer showing the rudders deflection.
:
===Weapons system===
Weapons Currently Available:

* LAU-68 (Launcher with 7 WP rockets)
* Mk-82 (Available in single and triple racks)
* AIM-9 (A/A Missile, available in dual racks)
* AN/ALQ-131 (ECM pod, currently no use)

[[File:A-10-arm-1.jpg|thumb|Armament panel|link=https://wiki.flightgear.org/File:A-10-arm-1.jpg]]Be sure to have electric power before trying to use the armament panel. The gun's rounds counter ('''A''') should be lighted in blue and the HUD should be active (not required to use the weapons, but it's good to have it before you turn your weapons on).

First of all push up the Master Switch to ARM ('''B''').

To use the gun, push up the Gun Rate Switch to HI (right of the rounds counter). At the top/left of the main panel a green light indicating 'Gun Ready' will light up. Press <code>e</code> to fire the gun. Aiming is done with the <code>+</code> on the HUD.

To release the Mk-82s and fire the LAU-68s, select the green squares in the center of the weapons panel and press <code>E</code> to fire. Keep in mind that only one type of weapon can be selected at one time, and the order in which you select the pylons will affect the order in which the ordnance on them is released.

To use the AIM-9s, turn the AIM-9 Mode Knob ('''C''') to SEL (click on the right side of the knob). Now a big circle appears on the HUD symbology, that the searching aera of the AIM-9. Now select the pylons you have mounted your sidewinders on (either 0, 11, or both), and you should hear the seeker sound. This sound is only audible when an AIM-9 is available, selected and searching. Press key 'E' to fire the AIM-9

== Gallery ==
<gallery>
File:Hawg-5.png
File:Hawg-3.png
File:Hawg-1.png
File:Hawg-2.png
File:Hawg-4.png
File:A-10-2.png|A-10 using its GAU-8 30mm Gun
File:A-10 Warthog in Bombable.png|alt=A-10 in Bombable|A-10 in Bombable
File:A-10.jpg
</gallery>

== Work In Progress ==
{| class="wikitable"
|+
!Task
!Status
!Remarks
|-
|Rewrite Weapon System handling code
|{{Progressbar|percentage=80}}
|Currently in-progress by Eagle01
|-
|Add additional weapon loadouts (something guided? GBU-12/AGM-65?)
|{{Progressbar|percentage=90}}
|CBUs, Mk-82R, AGM-65, Mk-84 and ECM pods have been added
|-
|Paintkit fix
|Done! ✅
|Big thanks to Wolf!
|-
|Weapons Graphical update
|Done! ✅
|Big, big thanks to Eagle01
|-
|Full cockpit functionality
|{{Progressbar|percentage=60}}
|Getting there, Maverick screen still needs work...
|-
|FDM rework
|{{Progressbar|percentage=90}}
|JSB file is there, just needs some refining and implementation
|-
|Canvas HUD rewrite
|{{Progressbar|percentage=0}}
|Volunteers? Join the discord!
|}

==See also==
[[A-10 Thunderbolt II FDM]]
==External links==
*[http://brenthugh.com/flightgear/Sun_Valley_Tank_Invasion1.zip Several ground bombing scenarios suitable for the A-10, involving moving and static tank formations, explodable M1 Abrams tanks, etc.] '''IMPORTANT: Does not work on most recent versions of FlightGear.''' It's a pity, I know :(
*A-10 Development Discord Server: https://discord.gg/RmtjmsT5vS
{{air-to-air refueling}}

Fairchild Republic A-10 Thunderbolt II, OPRF Version

2021-10-17T16:34:53Z

Zorka:

The '''Fairchild A-10 Thunderbolt II''' (aka '''Warthog''') offers a wide variety of features and controls. Special features include the ability to simulate ordnance use, and a detailed 3D textured cockpit. Many of the A-10's flight systems are modeled as well, such as support for [[Tactical_Air_Navigation|TACAN]].
{{infobox aircraft
| name = Fairchild A-10
| hangar = OPRF
| aircraft = A-10
| image = A-10-3.png
| alt = The "Warthog"
| image2 = A-1-1.png
| alt2 = A-10 Warthog Taking off from KXTA
| type = Military aircraft/Attack aircraft
| config = Low wing aircraft
| propulsion = Twinjet
| manufacturer = Fairchild Republic
| authors = Lee Elliott/Alexis Bory/David Bastien/Pinto/Steve Brown/Rudolf/J Maverick 16/Zorka/Eagle01/Wolf
| fdm = YASim
| fgname = A-10
| status-fdm = 4
| status-systems = 5
| status-cockpit = 4
| status-model = 4
| ready = airrefuel/Emesary
| wikipedia = Fairchild Republic A-10 Thunderbolt II
| navbar = 1
|download=https://github.com/l0k1/A-10}}
This is the version used by [[Operation Red Flag|OPRF (Operation Red Flag)]] and is the branch that is being actively developed.

==About the aircraft==
The Fairchild Republic A-10, nicknamed "Warthog," is a U.S. single-seat, twin-engine, very robust jet aircraft designed for ground attack.
==User's Manual==
In the current version, the aircraft simulation begins with the aircraft powered down and [[Emesary|Emesary damage]] enabled.

The electrical power systems and the {{Abbr|APU's|Auxiliary Power Unit's}} operation are simulated to a large extent. [[Howto:Aerial_refueling|Mid-air refueling]] is also implemented.

The navigation instruments are [[Tactical_Air_Navigation|TACAN]], {{Abbr|ILS|Instrument Landing System}} and also a VHF so you can have homing on a VOR station.

Several external loads are available and the [[HUD]] provides a {{abbr|CCIP|Continuous Computed Impact Point}}.

== Keybinds ==
<code>j/k</code> Extend/Retract Speedbrakes

<code>[/]</code> Extend/Retract Flaps

<code>e</code> GAU-8 Trigger

<code>E</code> Drop Ordnance

<code>Shift+q</code> Flares

===Electrical power with APU starting procedure===
[[File:A-10-electrical-power-control-panel.jpg|thumb|Electrical control panel|link=https://wiki.flightgear.org/File:A-10-electrical-power-control-panel.jpg]]At FlightGear startup, both electrical power and APU are shut down and there is no external power supplied.

You, might see, early on, some needles spinning back on the engines gauges panel and the VSI ... this is only a software initialization artifact.

So, look at the right console, there is a panel with 6 switches, that's the Main Electrical Control Panel. Hit Ctrl-c and you will have a view of where to click.

Let's connect the battery: switch on the battery switch. A few indicators should light up, but not all of them. Now with the battery connected you can start the APU.

The APU start/stop switch is located near the throttle on the left console. Switch it on. Now check the APU's tachometer and EGT on the engine gauge panel.

If the APU has started successfuly you should see the EGT (Exhaust Gas Temperature) rapidly climb to 800/900 °C and then stabilize when the RPMs reach 60%.[[File:A-10-throttle-engine-start.jpg|thumb|Throttle, engines operation and APU panel|link=https://wiki.flightgear.org/File:A-10-throttle-engine-start.jpg]]Now the APU has sufficient RPMs to provide electrical power through its generator. So let's turn on the APU generator. This one is on the main electrical control panel, upper left corner of the electrical control panel, right console again.

With the APU generator powered up most of the instruments receive electrical power and now the AOA]] indexer lights up and the HSI (the compass) and ADI (artificial horizon) look much better.

At 85% RPM the APU supplies enough bleed air to start the engines.

[[File:engine-gauges.jpg|thumb|APU running, Engines gauges at stop.|link=https://wiki.flightgear.org/File:Engine-gauges.jpg]]
===Engines starting procedure===
Now that we have minimum electrical power and bleed air supplied by the APU, starting the engines is straight forward.

Just click on one of the throttle rails (Ctrl-c to see them), the throttle will move from stop to idle and the engine start. Wait for the starting cycle light to turn off, turn on the corresponding generator and repeat with the second engine.

Now the complete electrical circuit is powered and you can stop the APU to save some fuel. It wont be useful anymore. (This could change with future development of engines failures...)

===Fuel System===
FlightGear A-10 starts with all internal tanks full.

2 wing tanks (left and right), 2 fuselage tanks: left main (aft) linked to left system and right main (forward) linked to right system, up to 3 external tanks (2 wings and 1 fuselage).

Normally the left wing and left main tanks feed the left engine and the APU. The right wing and right main tanks feed the right engine. The two feed lines can be interconnected by opening the cross feed valve ('''E''' switch).

The wing boost pumps ('''G''' switch) supply the respective engines until the wing tanks are empty, then the wing boost pumps automatically shut off. The main boost pumps then supply the respective engines with the remainder fuel in main tanks.

In case of a wing tank boost pump failure, the wing tank fuel will gravity feed its respective main tank if the main tank fuel level is below 600 lbs. Check valves prevent reverse fuel flow from the main tanks to the wing tanks.

In case of a main tank boost pump failure, the affected engine will suction-feed from the affected tank for all power setting up to an altitude of nearly 10,000 feet.

Unequal fuel level between left (aft) main and right (forward) main tank (imbalance superior 750 lbs) will cause a longitudinal CG shift that may exceed allowable limits. In this case, opening the valve "tank gate" create a link between the two main tanks.

Fuel from the external tanks is transfered to the wing or main tanks by pressure from the bleed air system. Wing tanks can be topped when the fuel level is below 1590 lbs. Main tanks can be topped when the fuel level is below 3034 lbs. The cycling is repeated until fuel is depleted from the external wing tanks first, and external fuselage tank secondly.

For negative G flight, collector tanks will supply the engine with sufficient fuel for 10 seconds operation at MAX power.

With fully loaded fuel tanks and a full load of armament, the A-10 is heavy--about 50,000 pounds. At this weight the plane is quite difficult to fly. Symptoms you would notice are difficult to take off, difficulty gaining altitude, difficult to manoeuvre without triggering stall warnings or actual stalls.

To avoid these problems, if you choose to equip the plane with full armament you may wish to fill the tanks only half full or so--the plane becomes much easier to fly and half fuel is still enough for a reasonably long flight.[[File:A-10-fuel-control-doc.jpg|thumb|Fuel Control panel.|link=https://wiki.flightgear.org/File:A-10-fuel-control-doc.jpg]]The '''Fuel Control panel''' is located on the forward part of left console. 1 lever, 4 push buttons and 8 switches are functional.

:('''A''') Fill Disable buttons, left and right wings tanks. Here fill disabled (button up showing red stripe). Refuel disabled for the wings tanks.
:('''B''') Fill Disable buttons, left and right main tanks (practically forward and aft fuselage tanks). Here fill enabled (button down hiding red stripe). Refuel enabled for the main tanks.
:('''C''') Refuel Receiver Door lever.
:('''D''') External Tanks switches, Wings and Fuselage. Set to OFF to un-pressurize external tanks
:('''E''') Cross Feed switch, allow any operating boost pump to feed both engines.
:('''F''') Tank Gate switch, open a valve linking the left (aft) and right (forward) main fuel tanks.
:('''G''') Boost Pumps (Wing)
:('''H''') Boost Pumps (Main)
:
===HUD===
[[File:A-10-hud-control-panel.jpg|thumb|HUD Control panel|link=https://wiki.flightgear.org/File:A-10-hud-control-panel.jpg]]The Head Up Display is turned off by default at aircraft startup. To turn it on electrical power on at least one of the three generator is needed as it isn't wired to the battery.

The '''HUD Control panel''' is located on the upper left corner of the main instrument panel. Three knobs are functional.

:('''A''') Mode Selector Switch: Modes available are:
:* OFF
:* TEST (standard display, shows all possible HUD symbology in the actual aircraft)
:* NAV (standard display, shows only navigation-required symbology in the actual aircraft)
:* CCIP (standard display + Continually Computed Impact Point, this is very similar to the actual aircraft)
:* CCRP (standard display, + Continually Computed Release Point in the actual aircraft)
:* EXP (standard display)
:* STBY (standard display) Other than CCIP, all other modes have NAV as their placeholder. See later in Weapons System about HUD use.
:('''B''') INTEN knob: Adjust the HUD luminosity.
:('''C''') DEPR knob: Changes the vertical position of the primary aiming reticle in the HUD, There is a digital index in the HUD showing its position, range from -1.00 to 1.00 followed by the letter "D".

'''HUD Symbology:'''[[File:A-10-hud-symbology.jpg|thumb|HUD Symbology|link=https://wiki.flightgear.org/File:A-10-hud-symbology.jpg]]
:('''D''') Pitch ladder.
:('''E''') Indicated Air Speed, Kts.
:('''F''') Primary Aiming Reticle.
:('''G''') Horizon Line
:('''H''') Primary Aiming Reticle Digital index.
:('''I''') Magnetic Heading Tape.
:('''J''') Indicated Altitude in feet (ASL).
:('''K''') Radar Altitude in feet (AGL) followed by letter "R".
:('''I''') Aircraft Pitch in degrees, boxed.
:('''M''') Total Velocity Vector indicator.
:('''N''') Pointer showing the rudders deflection.
:
===Weapons system===
Weapons Currently Available:

* LAU-68 (Launcher with 7 WP rockets)
* Mk-82 (Available in single and triple racks)
* AIM-9 (A/A Missile, available in dual racks)
* AN/ALQ-131 (ECM pod, currently no use)

[[File:A-10-arm-1.jpg|thumb|Armament panel|link=https://wiki.flightgear.org/File:A-10-arm-1.jpg]]Be sure to have electric power before trying to use the armament panel. The gun's rounds counter ('''A''') should be lighted in blue and the HUD should be active (not required to use the weapons, but it's good to have it before you turn your weapons on).

First of all push up the Master Switch to ARM ('''B''').

To use the gun, push up the Gun Rate Switch to HI (right of the rounds counter). At the top/left of the main panel a green light indicating 'Gun Ready' will light up. Press <code>e</code> to fire the gun. Aiming is done with the <code>+</code> on the HUD.

To release the Mk-82s and fire the LAU-68s, select the green squares in the center of the weapons panel and press <code>E</code> to fire. Keep in mind that only one type of weapon can be selected at one time, and the order in which you select the pylons will affect the order in which the ordnance on them is released.

To use the AIM-9s, turn the AIM-9 Mode Knob ('''C''') to SEL (click on the right side of the knob). Now a big circle appears on the HUD symbology, that the searching aera of the AIM-9. Now select the pylons you have mounted your sidewinders on (either 0, 11, or both), and you should hear the seeker sound. This sound is only audible when an AIM-9 is available, selected and searching. Press key 'E' to fire the AIM-9

== Gallery ==
<gallery>
File:Hawg-5.png
File:Hawg-3.png
File:Hawg-1.png
File:Hawg-2.png
File:Hawg-4.png
File:A-10-2.png|A-10 using its GAU-8 30mm Gun
File:A-10 Warthog in Bombable.png|alt=A-10 in Bombable|A-10 in Bombable
File:A-10.jpg
</gallery>

== Work In Progress ==
{| class="wikitable"
|+
!Task
!Status
!Remarks
|-
|Rewrite Weapon System handling code
|{{Progressbar|percentage=10}}
|Zorka started on it, but he needs some help finishing ;)
|-
|Add additional weapon loadouts (something guided? GBU-12/AGM-65?)
|{{Progressbar|percentage=10}}
|Zorka added the models and got a test-fire to work, but damage (⬆️) needs to be rewritten...
|-
|Paintkit fix
|Done! ✅
|Big thanks to Wolf!
|-
|Weapons Graphical update
|{{Progressbar|percentage=70}}
|Zorka added improved models to AIM-9 and Mk-82s, Needs a bit of fiddling around to get the textures right, though...
|-
|Full cockpit functionality
|{{Progressbar|percentage=60}}
|Getting there, Maverick screen still needs work...
|-
|FDM rework
|{{Progressbar|percentage=90}}
|JSB file is there, just needs some refining and implementation
|}

==See also==
[[A-10 Thunderbolt II FDM]]
==External links==
*[http://brenthugh.com/flightgear/Sun_Valley_Tank_Invasion1.zip Several ground bombing scenarios suitable for the A-10, involving moving and static tank formations, explodable M1 Abrams tanks, etc.] '''IMPORTANT: Does not work on most recent versions of FlightGear.''' It's a pity, I know :(
*A-10 Development Discord Server: https://discord.gg/RmtjmsT5vS
{{air-to-air refueling}}

Fairchild Republic A-10 Thunderbolt II, OPRF Version

2021-10-17T08:48:24Z

Zorka: WIP section to A-10 Wiki

The '''Fairchild A-10 Thunderbolt II''' (aka '''Warthog''') offers a wide variety of features and controls. Special features include the ability to simulate ordnance use, and a detailed 3D textured cockpit. Many of the A-10's flight systems are modeled as well, such as support for [[Tactical_Air_Navigation|TACAN]].
{{infobox aircraft
| name = Fairchild A-10
| hangar = OPRF
| aircraft = A-10
| image = A-10-3.png
| alt = The "Warthog"
| image2 = A-1-1.png
| alt2 = A-10 Warthog Taking off from KXTA
| type = Military aircraft/Attack aircraft
| config = Low wing aircraft
| propulsion = Twinjet
| manufacturer = Fairchild Republic
| authors = Lee Elliott/Alexis Bory/David Bastien/Pinto/Steve Brown/Rudolf/J Maverick 16/Zorka/Eagle01/Wolf
| fdm = YASim
| fgname = A-10
| status-fdm = 4
| status-systems = 5
| status-cockpit = 4
| status-model = 4
| ready = airrefuel/Emesary
| wikipedia = Fairchild Republic A-10 Thunderbolt II
| navbar = 1
|download=https://github.com/l0k1/A-10}}
This is the version used by [[Operation Red Flag|OPRF (Operation Red Flag)]] and is the branch that is being actively developed.

==About the aircraft==
The Fairchild Republic A-10, nicknamed "Warthog," is a U.S. single-seat, twin-engine, very robust jet aircraft designed for ground attack.
==User's Manual==
In the current version, the aircraft simulation begins with the aircraft powered down and [[Emesary|Emesary damage]] enabled.

The electrical power systems and the {{Abbr|APU's|Auxiliary Power Unit's}} operation are simulated to a large extent. [[Howto:Aerial_refueling|Mid-air refueling]] is also implemented.

The navigation instruments are [[Tactical_Air_Navigation|TACAN]], {{Abbr|ILS|Instrument Landing System}} and also a VHF so you can have homing on a VOR station.

Several external loads are available and the [[HUD]] provides a {{abbr|CCIP|Continuous Computed Impact Point}}.

== Keybinds ==
<code>j/k</code> Extend/Retract Speedbrakes

<code>[/]</code> Extend/Retract Flaps

<code>e</code> GAU-8 Trigger

<code>E</code> Drop Ordnance

<code>Shift+q</code> Flares

===Electrical power with APU starting procedure===
[[File:A-10-electrical-power-control-panel.jpg|thumb|Electrical control panel|link=https://wiki.flightgear.org/File:A-10-electrical-power-control-panel.jpg]]At FlightGear startup, both electrical power and APU are shut down and there is no external power supplied.

You, might see, early on, some needles spinning back on the engines gauges panel and the VSI ... this is only a software initialization artifact.

So, look at the right console, there is a panel with 6 switches, that's the Main Electrical Control Panel. Hit Ctrl-c and you will have a view of where to click.

Let's connect the battery: switch on the battery switch. A few indicators should light up, but not all of them. Now with the battery connected you can start the APU.

The APU start/stop switch is located near the throttle on the left console. Switch it on. Now check the APU's tachometer and EGT on the engine gauge panel.

If the APU has started successfuly you should see the EGT (Exhaust Gas Temperature) rapidly climb to 800/900 °C and then stabilize when the RPMs reach 60%.[[File:A-10-throttle-engine-start.jpg|thumb|Throttle, engines operation and APU panel|link=https://wiki.flightgear.org/File:A-10-throttle-engine-start.jpg]]Now the APU has sufficient RPMs to provide electrical power through its generator. So let's turn on the APU generator. This one is on the main electrical control panel, upper left corner of the electrical control panel, right console again.

With the APU generator powered up most of the instruments receive electrical power and now the AOA]] indexer lights up and the HSI (the compass) and ADI (artificial horizon) look much better.

At 85% RPM the APU supplies enough bleed air to start the engines.

[[File:engine-gauges.jpg|thumb|APU running, Engines gauges at stop.|link=https://wiki.flightgear.org/File:Engine-gauges.jpg]]
===Engines starting procedure===
Now that we have minimum electrical power and bleed air supplied by the APU, starting the engines is straight forward.

Just click on one of the throttle rails (Ctrl-c to see them), the throttle will move from stop to idle and the engine start. Wait for the starting cycle light to turn off, turn on the corresponding generator and repeat with the second engine.

Now the complete electrical circuit is powered and you can stop the APU to save some fuel. It wont be useful anymore. (This could change with future development of engines failures...)

===Fuel System===
FlightGear A-10 starts with all internal tanks full.

2 wing tanks (left and right), 2 fuselage tanks: left main (aft) linked to left system and right main (forward) linked to right system, up to 3 external tanks (2 wings and 1 fuselage).

Normally the left wing and left main tanks feed the left engine and the APU. The right wing and right main tanks feed the right engine. The two feed lines can be interconnected by opening the cross feed valve ('''E''' switch).

The wing boost pumps ('''G''' switch) supply the respective engines until the wing tanks are empty, then the wing boost pumps automatically shut off. The main boost pumps then supply the respective engines with the remainder fuel in main tanks.

In case of a wing tank boost pump failure, the wing tank fuel will gravity feed its respective main tank if the main tank fuel level is below 600 lbs. Check valves prevent reverse fuel flow from the main tanks to the wing tanks.

In case of a main tank boost pump failure, the affected engine will suction-feed from the affected tank for all power setting up to an altitude of nearly 10,000 feet.

Unequal fuel level between left (aft) main and right (forward) main tank (imbalance superior 750 lbs) will cause a longitudinal CG shift that may exceed allowable limits. In this case, opening the valve "tank gate" create a link between the two main tanks.

Fuel from the external tanks is transfered to the wing or main tanks by pressure from the bleed air system. Wing tanks can be topped when the fuel level is below 1590 lbs. Main tanks can be topped when the fuel level is below 3034 lbs. The cycling is repeated until fuel is depleted from the external wing tanks first, and external fuselage tank secondly.

For negative G flight, collector tanks will supply the engine with sufficient fuel for 10 seconds operation at MAX power.

With fully loaded fuel tanks and a full load of armament, the A-10 is heavy--about 50,000 pounds. At this weight the plane is quite difficult to fly. Symptoms you would notice are difficult to take off, difficulty gaining altitude, difficult to manoeuvre without triggering stall warnings or actual stalls.

To avoid these problems, if you choose to equip the plane with full armament you may wish to fill the tanks only half full or so--the plane becomes much easier to fly and half fuel is still enough for a reasonably long flight.[[File:A-10-fuel-control-doc.jpg|thumb|Fuel Control panel.|link=https://wiki.flightgear.org/File:A-10-fuel-control-doc.jpg]]The '''Fuel Control panel''' is located on the forward part of left console. 1 lever, 4 push buttons and 8 switches are functional.

:('''A''') Fill Disable buttons, left and right wings tanks. Here fill disabled (button up showing red stripe). Refuel disabled for the wings tanks.
:('''B''') Fill Disable buttons, left and right main tanks (practically forward and aft fuselage tanks). Here fill enabled (button down hiding red stripe). Refuel enabled for the main tanks.
:('''C''') Refuel Receiver Door lever.
:('''D''') External Tanks switches, Wings and Fuselage. Set to OFF to un-pressurize external tanks
:('''E''') Cross Feed switch, allow any operating boost pump to feed both engines.
:('''F''') Tank Gate switch, open a valve linking the left (aft) and right (forward) main fuel tanks.
:('''G''') Boost Pumps (Wing)
:('''H''') Boost Pumps (Main)
:
===HUD===
[[File:A-10-hud-control-panel.jpg|thumb|HUD Control panel|link=https://wiki.flightgear.org/File:A-10-hud-control-panel.jpg]]The Head Up Display is turned off by default at aircraft startup. To turn it on electrical power on at least one of the three generator is needed as it isn't wired to the battery.

The '''HUD Control panel''' is located on the upper left corner of the main instrument panel. Three knobs are functional.

:('''A''') Mode Selector Switch: Modes available are:
:* OFF
:* TEST (standard display, shows all possible HUD symbology in the actual aircraft)
:* NAV (standard display, shows only navigation-required symbology in the actual aircraft)
:* CCIP (standard display + Continually Computed Impact Point, this is very similar to the actual aircraft)
:* CCRP (standard display, + Continually Computed Release Point in the actual aircraft)
:* EXP (standard display)
:* STBY (standard display) Other than CCIP, all other modes have NAV as their placeholder. See later in Weapons System about HUD use.
:('''B''') INTEN knob: Adjust the HUD luminosity.
:('''C''') DEPR knob: Changes the vertical position of the primary aiming reticle in the HUD, There is a digital index in the HUD showing its position, range from -1.00 to 1.00 followed by the letter "D".

'''HUD Symbology:'''[[File:A-10-hud-symbology.jpg|thumb|HUD Symbology|link=https://wiki.flightgear.org/File:A-10-hud-symbology.jpg]]
:('''D''') Pitch ladder.
:('''E''') Indicated Air Speed, Kts.
:('''F''') Primary Aiming Reticle.
:('''G''') Horizon Line
:('''H''') Primary Aiming Reticle Digital index.
:('''I''') Magnetic Heading Tape.
:('''J''') Indicated Altitude in feet (ASL).
:('''K''') Radar Altitude in feet (AGL) followed by letter "R".
:('''I''') Aircraft Pitch in degrees, boxed.
:('''M''') Total Velocity Vector indicator.
:('''N''') Pointer showing the rudders deflection.
:
===Weapons system===
Weapons Currently Available:

* LAU-68 (Launcher with 7 WP rockets)
* Mk-82 (Available in single and triple racks)
* AIM-9 (A/A Missile, available in dual racks)
* AN/ALQ-131 (ECM pod, currently no use)

[[File:A-10-arm-1.jpg|thumb|Armament panel|link=https://wiki.flightgear.org/File:A-10-arm-1.jpg]]Be sure to have electric power before trying to use the armament panel. The gun's rounds counter ('''A''') should be lighted in blue and the HUD should be active (not required to use the weapons, but it's good to have it before you turn your weapons on).

First of all push up the Master Switch to ARM ('''B''').

To use the gun, push up the Gun Rate Switch to HI (right of the rounds counter). At the top/left of the main panel a green light indicating 'Gun Ready' will light up. Press <code>e</code> to fire the gun. Aiming is done with the <code>+</code> on the HUD.

To release the Mk-82s and fire the LAU-68s, select the green squares in the center of the weapons panel and press <code>E</code> to fire. Keep in mind that only one type of weapon can be selected at one time, and the order in which you select the pylons will affect the order in which the ordnance on them is released.

To use the AIM-9s, turn the AIM-9 Mode Knob ('''C''') to SEL (click on the right side of the knob). Now a big circle appears on the HUD symbology, that the searching aera of the AIM-9. Now select the pylons you have mounted your sidewinders on (either 0, 11, or both), and you should hear the seeker sound. This sound is only audible when an AIM-9 is available, selected and searching. Press key 'E' to fire the AIM-9

== Gallery ==
<gallery>
File:Hawg-5.png
File:Hawg-3.png
File:Hawg-1.png
File:Hawg-2.png
File:Hawg-4.png
File:A-10-2.png|A-10 using its GAU-8 30mm Gun
File:A-10 Warthog in Bombable.png|alt=A-10 in Bombable|A-10 in Bombable
File:A-10.jpg
</gallery>

== Work In Progress ==
{| class="wikitable"
|+
!Task
!Status
!Remarks
|-
|Rewrite Weapon System handling code
|{{Progressbar|percentage=10}}
|Zorka started on it, but he needs some help finishing ;)
|-
|Add additional weapon loadouts (something guided? GBU-12/AGM-65?)
|{{Progressbar|percentage=10}}
|Zorka added the models and got a test-fire to work, but damage (⬆️) needs to be rewritten...
|-
|Paintkit fix
|Done! ✅
|Big thanks to Wolf!
|-
|Weapons Graphical update
|{{Progressbar|percentage=70}}
|Zorka added improved models to AIM-9 and Mk-82s, Needs a bit of fiddling around to get the textures right, though...
|}

==See also==
[[A-10 Thunderbolt II FDM]]
==External links==
*[http://brenthugh.com/flightgear/Sun_Valley_Tank_Invasion1.zip Several ground bombing scenarios suitable for the A-10, involving moving and static tank formations, explodable M1 Abrams tanks, etc.] '''IMPORTANT: Does not work on most recent versions of FlightGear.''' It's a pity, I know :(
*A-10 Development Discord Server: https://discord.gg/RmtjmsT5vS
{{air-to-air refueling}}

Fairchild Republic A-10 Thunderbolt II, OPRF Version

2021-10-14T09:20:14Z

Zorka: Corrected links

The '''Fairchild A-10 Thunderbolt II''' (aka '''Warthog''') offers a wide variety of features and controls. Special features include the ability to simulate ordnance use, and a detailed 3D textured cockpit. Many of the A-10's flight systems are modeled as well, such as support for [[Tactical_Air_Navigation|TACAN]].
{{infobox aircraft
| name = Fairchild A-10
| hangar = OPRF
| aircraft = A-10
| image = A-10-3.png
| alt = The "Warthog"
| image2 = A-1-1.png
| alt2 = A-10 Warthog Taking off from KXTA
| type = Military aircraft/Attack aircraft
| config = Low wing aircraft
| propulsion = Twinjet
| manufacturer = Fairchild Republic
| authors = Lee Elliott/Alexis Bory/David Bastien/Pinto/Steve Brown/Rudolf/J Maverick 16/Zorka/Eagle01/Wolf
| fdm = YASim
| fgname = A-10
| status-fdm = 4
| status-systems = 5
| status-cockpit = 4
| status-model = 4
| ready = airrefuel/Emesary
| wikipedia = Fairchild Republic A-10 Thunderbolt II
| navbar = 1
|download=https://github.com/l0k1/A-10}}
This is the version used by [[Operation Red Flag|OPRF (Operation Red Flag)]] and is the branch that is being actively developed.

==About the aircraft==
The Fairchild Republic A-10, nicknamed "Warthog," is a U.S. single-seat, twin-engine, very robust jet aircraft designed for ground attack.
==User's Manual==
In the current version, the aircraft simulation begins with the aircraft powered down and [[Emesary|Emesary damage]] enabled.

The electrical power systems and the {{Abbr|APU's|Auxiliary Power Unit's}} operation are simulated to a large extent. [[Howto:Aerial_refueling|Mid-air refueling]] is also implemented.

The navigation instruments are [[Tactical_Air_Navigation|TACAN]], {{Abbr|ILS|Instrument Landing System}} and also a VHF so you can have homing on a VOR station.

Several external loads are available and the [[HUD]] provides a {{abbr|CCIP|Continuous Computed Impact Point}}.

== Keybinds ==
<code>j/k</code> Extend/Retract Speedbrakes

<code>[/]</code> Extend/Retract Flaps

<code>e</code> GAU-8 Trigger

<code>E</code> Drop Ordnance

<code>Shift+q</code> Flares

===Electrical power with APU starting procedure===
[[File:A-10-electrical-power-control-panel.jpg|thumb|Electrical control panel|link=https://wiki.flightgear.org/File:A-10-electrical-power-control-panel.jpg]]At FlightGear startup, both electrical power and APU are shut down and there is no external power supplied.

You, might see, early on, some needles spinning back on the engines gauges panel and the VSI ... this is only a software initialization artifact.

So, look at the right console, there is a panel with 6 switches, that's the Main Electrical Control Panel. Hit Ctrl-c and you will have a view of where to click.

Let's connect the battery: switch on the battery switch. A few indicators should light up, but not all of them. Now with the battery connected you can start the APU.

The APU start/stop switch is located near the throttle on the left console. Switch it on. Now check the APU's tachometer and EGT on the engine gauge panel.

If the APU has started successfuly you should see the EGT (Exhaust Gas Temperature) rapidly climb to 800/900 °C and then stabilize when the RPMs reach 60%.[[File:A-10-throttle-engine-start.jpg|thumb|Throttle, engines operation and APU panel|link=https://wiki.flightgear.org/File:A-10-throttle-engine-start.jpg]]Now the APU has sufficient RPMs to provide electrical power through its generator. So let's turn on the APU generator. This one is on the main electrical control panel, upper left corner of the electrical control panel, right console again.

With the APU generator powered up most of the instruments receive electrical power and now the AOA]] indexer lights up and the HSI (the compass) and ADI (artificial horizon) look much better.

At 85% RPM the APU supplies enough bleed air to start the engines.

[[File:engine-gauges.jpg|thumb|APU running, Engines gauges at stop.|link=https://wiki.flightgear.org/File:Engine-gauges.jpg]]
===Engines starting procedure===
Now that we have minimum electrical power and bleed air supplied by the APU, starting the engines is straight forward.

Just click on one of the throttle rails (Ctrl-c to see them), the throttle will move from stop to idle and the engine start. Wait for the starting cycle light to turn off, turn on the corresponding generator and repeat with the second engine.

Now the complete electrical circuit is powered and you can stop the APU to save some fuel. It wont be useful anymore. (This could change with future development of engines failures...)

===Fuel System===
FlightGear A-10 starts with all internal tanks full.

2 wing tanks (left and right), 2 fuselage tanks: left main (aft) linked to left system and right main (forward) linked to right system, up to 3 external tanks (2 wings and 1 fuselage).

Normally the left wing and left main tanks feed the left engine and the APU. The right wing and right main tanks feed the right engine. The two feed lines can be interconnected by opening the cross feed valve ('''E''' switch).

The wing boost pumps ('''G''' switch) supply the respective engines until the wing tanks are empty, then the wing boost pumps automatically shut off. The main boost pumps then supply the respective engines with the remainder fuel in main tanks.

In case of a wing tank boost pump failure, the wing tank fuel will gravity feed its respective main tank if the main tank fuel level is below 600 lbs. Check valves prevent reverse fuel flow from the main tanks to the wing tanks.

In case of a main tank boost pump failure, the affected engine will suction-feed from the affected tank for all power setting up to an altitude of nearly 10,000 feet.

Unequal fuel level between left (aft) main and right (forward) main tank (imbalance superior 750 lbs) will cause a longitudinal CG shift that may exceed allowable limits. In this case, opening the valve "tank gate" create a link between the two main tanks.

Fuel from the external tanks is transfered to the wing or main tanks by pressure from the bleed air system. Wing tanks can be topped when the fuel level is below 1590 lbs. Main tanks can be topped when the fuel level is below 3034 lbs. The cycling is repeated until fuel is depleted from the external wing tanks first, and external fuselage tank secondly.

For negative G flight, collector tanks will supply the engine with sufficient fuel for 10 seconds operation at MAX power.

With fully loaded fuel tanks and a full load of armament, the A-10 is heavy--about 50,000 pounds. At this weight the plane is quite difficult to fly. Symptoms you would notice are difficult to take off, difficulty gaining altitude, difficult to manoeuvre without triggering stall warnings or actual stalls.

To avoid these problems, if you choose to equip the plane with full armament you may wish to fill the tanks only half full or so--the plane becomes much easier to fly and half fuel is still enough for a reasonably long flight.[[File:A-10-fuel-control-doc.jpg|thumb|Fuel Control panel.|link=https://wiki.flightgear.org/File:A-10-fuel-control-doc.jpg]]The '''Fuel Control panel''' is located on the forward part of left console. 1 lever, 4 push buttons and 8 switches are functional.

:('''A''') Fill Disable buttons, left and right wings tanks. Here fill disabled (button up showing red stripe). Refuel disabled for the wings tanks.
:('''B''') Fill Disable buttons, left and right main tanks (practically forward and aft fuselage tanks). Here fill enabled (button down hiding red stripe). Refuel enabled for the main tanks.
:('''C''') Refuel Receiver Door lever.
:('''D''') External Tanks switches, Wings and Fuselage. Set to OFF to un-pressurize external tanks
:('''E''') Cross Feed switch, allow any operating boost pump to feed both engines.
:('''F''') Tank Gate switch, open a valve linking the left (aft) and right (forward) main fuel tanks.
:('''G''') Boost Pumps (Wing)
:('''H''') Boost Pumps (Main)
:
===HUD===
[[File:A-10-hud-control-panel.jpg|thumb|HUD Control panel|link=https://wiki.flightgear.org/File:A-10-hud-control-panel.jpg]]The Head Up Display is turned off by default at aircraft startup. To turn it on electrical power on at least one of the three generator is needed as it isn't wired to the battery.

The '''HUD Control panel''' is located on the upper left corner of the main instrument panel. Three knobs are functional.

:('''A''') Mode Selector Switch: Modes available are:
:* OFF
:* TEST (standard display, shows all possible HUD symbology in the actual aircraft)
:* NAV (standard display, shows only navigation-required symbology in the actual aircraft)
:* CCIP (standard display + Continually Computed Impact Point, this is very similar to the actual aircraft)
:* CCRP (standard display, + Continually Computed Release Point in the actual aircraft)
:* EXP (standard display)
:* STBY (standard display) Other than CCIP, all other modes have NAV as their placeholder. See later in Weapons System about HUD use.
:('''B''') INTEN knob: Adjust the HUD luminosity.
:('''C''') DEPR knob: Changes the vertical position of the primary aiming reticle in the HUD, There is a digital index in the HUD showing its position, range from -1.00 to 1.00 followed by the letter "D".

'''HUD Symbology:'''[[File:A-10-hud-symbology.jpg|thumb|HUD Symbology|link=https://wiki.flightgear.org/File:A-10-hud-symbology.jpg]]
:('''D''') Pitch ladder.
:('''E''') Indicated Air Speed, Kts.
:('''F''') Primary Aiming Reticle.
:('''G''') Horizon Line
:('''H''') Primary Aiming Reticle Digital index.
:('''I''') Magnetic Heading Tape.
:('''J''') Indicated Altitude in feet (ASL).
:('''K''') Radar Altitude in feet (AGL) followed by letter "R".
:('''I''') Aircraft Pitch in degrees, boxed.
:('''M''') Total Velocity Vector indicator.
:('''N''') Pointer showing the rudders deflection.
:
===Weapons system===
Weapons Currently Available:

* LAU-68 (Launcher with 7 WP rockets)
* Mk-82 (Available in single and triple racks)
* AIM-9 (A/A Missile, available in dual racks)
* AN/ALQ-131 (ECM pod, currently no use)

[[File:A-10-arm-1.jpg|thumb|Armament panel|link=https://wiki.flightgear.org/File:A-10-arm-1.jpg]]Be sure to have electric power before trying to use the armament panel. The gun's rounds counter ('''A''') should be lighted in blue and the HUD should be active (not required to use the weapons, but it's good to have it before you turn your weapons on).

First of all push up the Master Switch to ARM ('''B''').

To use the gun, push up the Gun Rate Switch to HI (right of the rounds counter). At the top/left of the main panel a green light indicating 'Gun Ready' will light up. Press <code>e</code> to fire the gun. Aiming is done with the <code>+</code> on the HUD.

To release the Mk-82s and fire the LAU-68s, select the green squares in the center of the weapons panel and press <code>E</code> to fire. Keep in mind that only one type of weapon can be selected at one time, and the order in which you select the pylons will affect the order in which the ordnance on them is released.

To use the AIM-9s, turn the AIM-9 Mode Knob ('''C''') to SEL (click on the right side of the knob). Now a big circle appears on the HUD symbology, that the searching aera of the AIM-9. Now select the pylons you have mounted your sidewinders on (either 0, 11, or both), and you should hear the seeker sound. This sound is only audible when an AIM-9 is available, selected and searching. Press key 'E' to fire the AIM-9

== Gallery ==
<gallery>
File:Hawg-5.png
File:Hawg-3.png
File:Hawg-1.png
File:Hawg-2.png
File:Hawg-4.png
File:A-10-2.png|A-10 using its GAU-8 30mm Gun
File:A-10 Warthog in Bombable.png|alt=A-10 in Bombable|A-10 in Bombable
File:A-10.jpg
</gallery>

==See also==
[[A-10 Thunderbolt II FDM]]
==External links==
*[http://brenthugh.com/flightgear/Sun_Valley_Tank_Invasion1.zip Several ground bombing scenarios suitable for the A-10, involving moving and static tank formations, explodable M1 Abrams tanks, etc.] '''IMPORTANT: Does not work on most recent versions of FlightGear.''' It's a pity, I know :(
*A-10 Development Discord Server: https://discord.gg/RmtjmsT5vS
{{air-to-air refueling}}

Fairchild Republic A-10 Thunderbolt II, OPRF Version

2021-10-14T09:18:22Z

Zorka:

The '''Fairchild A-10 Thunderbolt II''' (aka '''Warthog''') offers a wide variety of features and controls. Special features include the ability to simulate ordnance use, and a detailed 3D textured cockpit. Many of the A-10's flight systems are modeled as well, such as support for [[Tactical_Air_Navigation|TACAN]].
{{infobox aircraft
| name = Fairchild A-10
| hangar = OPRF
| aircraft = A-10
| image = A-10-3.png
| alt = The "Warthog"
| image2 = A-1-1.png
| alt2 = A-10 Warthog Taking off from KXTA
| type = Military aircraft/Attack aircraft
| config = Low wing aircraft
| propulsion = Twinjet
| manufacturer = Fairchild Republic
| authors = Lee Elliott/Alexis Bory/David Bastien/Pinto/Steve Brown/Rudolf/J Maverick 16/Zorka/Eagle01/Wolf
| fdm = YASim
| fgname = A-10
| status-fdm = 4
| status-systems = 5
| status-cockpit = 4
| status-model = 4
| ready = airrefuel/Emesary
| wikipedia = Fairchild Republic A-10 Thunderbolt II
| navbar = 1
}}
This is the version used by [[Operation Red Flag|OPRF (Operation Red Flag)]] and is the branch that is being actively developed.

==About the aircraft==
The Fairchild Republic A-10, nicknamed "Warthog," is a U.S. single-seat, twin-engine, very robust jet aircraft designed for ground attack.
==User's Manual==
In the current version, the aircraft simulation begins with the aircraft powered down and [[Emesary|Emesary damage]] enabled.

The electrical power systems and the {{Abbr|APU's|Auxiliary Power Unit's}} operation are simulated to a large extent. [[Howto:Aerial_refueling|Mid-air refueling]] is also implemented.

The navigation instruments are [[Tactical_Air_Navigation|TACAN]], {{Abbr|ILS|Instrument Landing System}} and also a VHF so you can have homing on a VOR station.

Several external loads are available and the [[HUD]] provides a {{abbr|CCIP|Continuous Computed Impact Point}}.

== Keybinds ==
<code>j/k</code> Extend/Retract Speedbrakes

<code>[/]</code> Extend/Retract Flaps

<code>e</code> GAU-8 Trigger

<code>E</code> Drop Ordnance

<code>Shift+q</code> Flares

===Electrical power with APU starting procedure===
[[File:A-10-electrical-power-control-panel.jpg|thumb|Electrical control panel|link=https://wiki.flightgear.org/File:A-10-electrical-power-control-panel.jpg]]At FlightGear startup, both electrical power and APU are shut down and there is no external power supplied.

You, might see, early on, some needles spinning back on the engines gauges panel and the VSI ... this is only a software initialization artifact.

So, look at the right console, there is a panel with 6 switches, that's the Main Electrical Control Panel. Hit Ctrl-c and you will have a view of where to click.

Let's connect the battery: switch on the battery switch. A few indicators should light up, but not all of them. Now with the battery connected you can start the APU.

The APU start/stop switch is located near the throttle on the left console. Switch it on. Now check the APU's tachometer and EGT on the engine gauge panel.

If the APU has started successfuly you should see the EGT (Exhaust Gas Temperature) rapidly climb to 800/900 °C and then stabilize when the RPMs reach 60%.[[File:A-10-throttle-engine-start.jpg|thumb|Throttle, engines operation and APU panel|link=https://wiki.flightgear.org/File:A-10-throttle-engine-start.jpg]]Now the APU has sufficient RPMs to provide electrical power through its generator. So let's turn on the APU generator. This one is on the main electrical control panel, upper left corner of the electrical control panel, right console again.

With the APU generator powered up most of the instruments receive electrical power and now the AOA]] indexer lights up and the HSI (the compass) and ADI (artificial horizon) look much better.

At 85% RPM the APU supplies enough bleed air to start the engines.

[[File:engine-gauges.jpg|thumb|APU running, Engines gauges at stop.|link=https://wiki.flightgear.org/File:Engine-gauges.jpg]]
===Engines starting procedure===
Now that we have minimum electrical power and bleed air supplied by the APU, starting the engines is straight forward.

Just click on one of the throttle rails (Ctrl-c to see them), the throttle will move from stop to idle and the engine start. Wait for the starting cycle light to turn off, turn on the corresponding generator and repeat with the second engine.

Now the complete electrical circuit is powered and you can stop the APU to save some fuel. It wont be useful anymore. (This could change with future development of engines failures...)

===Fuel System===
FlightGear A-10 starts with all internal tanks full.

2 wing tanks (left and right), 2 fuselage tanks: left main (aft) linked to left system and right main (forward) linked to right system, up to 3 external tanks (2 wings and 1 fuselage).

Normally the left wing and left main tanks feed the left engine and the APU. The right wing and right main tanks feed the right engine. The two feed lines can be interconnected by opening the cross feed valve ('''E''' switch).

The wing boost pumps ('''G''' switch) supply the respective engines until the wing tanks are empty, then the wing boost pumps automatically shut off. The main boost pumps then supply the respective engines with the remainder fuel in main tanks.

In case of a wing tank boost pump failure, the wing tank fuel will gravity feed its respective main tank if the main tank fuel level is below 600 lbs. Check valves prevent reverse fuel flow from the main tanks to the wing tanks.

In case of a main tank boost pump failure, the affected engine will suction-feed from the affected tank for all power setting up to an altitude of nearly 10,000 feet.

Unequal fuel level between left (aft) main and right (forward) main tank (imbalance superior 750 lbs) will cause a longitudinal CG shift that may exceed allowable limits. In this case, opening the valve "tank gate" create a link between the two main tanks.

Fuel from the external tanks is transfered to the wing or main tanks by pressure from the bleed air system. Wing tanks can be topped when the fuel level is below 1590 lbs. Main tanks can be topped when the fuel level is below 3034 lbs. The cycling is repeated until fuel is depleted from the external wing tanks first, and external fuselage tank secondly.

For negative G flight, collector tanks will supply the engine with sufficient fuel for 10 seconds operation at MAX power.

With fully loaded fuel tanks and a full load of armament, the A-10 is heavy--about 50,000 pounds. At this weight the plane is quite difficult to fly. Symptoms you would notice are difficult to take off, difficulty gaining altitude, difficult to manoeuvre without triggering stall warnings or actual stalls.

To avoid these problems, if you choose to equip the plane with full armament you may wish to fill the tanks only half full or so--the plane becomes much easier to fly and half fuel is still enough for a reasonably long flight.[[File:A-10-fuel-control-doc.jpg|thumb|Fuel Control panel.|link=https://wiki.flightgear.org/File:A-10-fuel-control-doc.jpg]]The '''Fuel Control panel''' is located on the forward part of left console. 1 lever, 4 push buttons and 8 switches are functional.

:('''A''') Fill Disable buttons, left and right wings tanks. Here fill disabled (button up showing red stripe). Refuel disabled for the wings tanks.
:('''B''') Fill Disable buttons, left and right main tanks (practically forward and aft fuselage tanks). Here fill enabled (button down hiding red stripe). Refuel enabled for the main tanks.
:('''C''') Refuel Receiver Door lever.
:('''D''') External Tanks switches, Wings and Fuselage. Set to OFF to un-pressurize external tanks
:('''E''') Cross Feed switch, allow any operating boost pump to feed both engines.
:('''F''') Tank Gate switch, open a valve linking the left (aft) and right (forward) main fuel tanks.
:('''G''') Boost Pumps (Wing)
:('''H''') Boost Pumps (Main)
:
===HUD===
[[File:A-10-hud-control-panel.jpg|thumb|HUD Control panel|link=https://wiki.flightgear.org/File:A-10-hud-control-panel.jpg]]The Head Up Display is turned off by default at aircraft startup. To turn it on electrical power on at least one of the three generator is needed as it isn't wired to the battery.

The '''HUD Control panel''' is located on the upper left corner of the main instrument panel. Three knobs are functional.

:('''A''') Mode Selector Switch: Modes available are:
:* OFF
:* TEST (standard display, shows all possible HUD symbology in the actual aircraft)
:* NAV (standard display, shows only navigation-required symbology in the actual aircraft)
:* CCIP (standard display + Continually Computed Impact Point, this is very similar to the actual aircraft)
:* CCRP (standard display, + Continually Computed Release Point in the actual aircraft)
:* EXP (standard display)
:* STBY (standard display) Other than CCIP, all other modes have NAV as their placeholder. See later in Weapons System about HUD use.
:('''B''') INTEN knob: Adjust the HUD luminosity.
:('''C''') DEPR knob: Changes the vertical position of the primary aiming reticle in the HUD, There is a digital index in the HUD showing its position, range from -1.00 to 1.00 followed by the letter "D".

'''HUD Symbology:'''[[File:A-10-hud-symbology.jpg|thumb|HUD Symbology|link=https://wiki.flightgear.org/File:A-10-hud-symbology.jpg]]
:('''D''') Pitch ladder.
:('''E''') Indicated Air Speed, Kts.
:('''F''') Primary Aiming Reticle.
:('''G''') Horizon Line
:('''H''') Primary Aiming Reticle Digital index.
:('''I''') Magnetic Heading Tape.
:('''J''') Indicated Altitude in feet (ASL).
:('''K''') Radar Altitude in feet (AGL) followed by letter "R".
:('''I''') Aircraft Pitch in degrees, boxed.
:('''M''') Total Velocity Vector indicator.
:('''N''') Pointer showing the rudders deflection.
:
===Weapons system===
Weapons Currently Available:

* LAU-68 (Launcher with 7 WP rockets)
* Mk-82 (Available in single and triple racks)
* AIM-9 (A/A Missile, available in dual racks)
* AN/ALQ-131 (ECM pod, currently no use)

[[File:A-10-arm-1.jpg|thumb|Armament panel|link=https://wiki.flightgear.org/File:A-10-arm-1.jpg]]Be sure to have electric power before trying to use the armament panel. The gun's rounds counter ('''A''') should be lighted in blue and the HUD should be active (not required to use the weapons, but it's good to have it before you turn your weapons on).

First of all push up the Master Switch to ARM ('''B''').

To use the gun, push up the Gun Rate Switch to HI (right of the rounds counter). At the top/left of the main panel a green light indicating 'Gun Ready' will light up. Press <code>e</code> to fire the gun. Aiming is done with the <code>+</code> on the HUD.

To release the Mk-82s and fire the LAU-68s, select the green squares in the center of the weapons panel and press <code>E</code> to fire. Keep in mind that only one type of weapon can be selected at one time, and the order in which you select the pylons will affect the order in which the ordnance on them is released.

To use the AIM-9s, turn the AIM-9 Mode Knob ('''C''') to SEL (click on the right side of the knob). Now a big circle appears on the HUD symbology, that the searching aera of the AIM-9. Now select the pylons you have mounted your sidewinders on (either 0, 11, or both), and you should hear the seeker sound. This sound is only audible when an AIM-9 is available, selected and searching. Press key 'E' to fire the AIM-9

== Gallery ==
<gallery>
File:Hawg-5.png
File:Hawg-3.png
File:Hawg-1.png
File:Hawg-2.png
File:Hawg-4.png
File:A-10-2.png|A-10 using its GAU-8 30mm Gun
File:A-10 Warthog in Bombable.png|alt=A-10 in Bombable|A-10 in Bombable
File:A-10.jpg
</gallery>

==See also==
[[A-10 Thunderbolt II FDM]]
==External links==
*[http://brenthugh.com/flightgear/Sun_Valley_Tank_Invasion1.zip Several ground bombing scenarios suitable for the A-10, involving moving and static tank formations, explodable M1 Abrams tanks, etc.] '''IMPORTANT: Does not work on most recent versions of FlightGear.''' It's a pity, I know :(
*A-10 Development Discord Server: https://discord.gg/RmtjmsT5vS
{{air-to-air refueling}}

Fairchild Republic A-10 Thunderbolt II, OPRF Version

2021-10-14T09:15:20Z

Zorka:

The '''Fairchild A-10 Thunderbolt II''' (aka '''Warthog''') offers a wide variety of features and controls. Special features include the ability to simulate ordnance use, and a detailed 3D textured cockpit. Many of the A-10's flight systems are modeled as well, such as support for [[Tactical_Air_Navigation|TACAN]].
{{infobox aircraft
| name = Fairchild A-10
| hangar = FGADDON
| aircraft = A-10
| image = A-10-3.png
| alt = The "Warthog"
| image2 = A-1-1.png
| alt2 = A-10 Warthog Taking off from KXTA
| type = Military aircraft/Attack aircraft
| config = Low wing aircraft
| propulsion = Twinjet
| manufacturer = Fairchild Republic
| authors = Lee Elliott/Alexis Bory/David Bastien, Pinto, Steve Brown, J Maverick 16, Zorka, Eagle01, Wolf
| fdm = YASim
| fgname = A-10
| status-fdm = 4
| status-systems = 5
| status-cockpit = 4
| status-model = 4
| ready = airrefuel/Emesary
| wikipedia = Fairchild Republic A-10 Thunderbolt II
| navbar = 1
}}
This is the version used by [[Operation Red Flag|OPRF (Operation Red Flag)]] and is the branch that is being actively developed.

==About the aircraft==
The Fairchild Republic A-10, nicknamed "Warthog," is a U.S. single-seat, twin-engine, very robust jet aircraft designed for ground attack.
==User's Manual==
In the current version, the aircraft simulation begins with the aircraft powered down and [[Emesary|Emesary damage]] enabled.

The electrical power systems and the {{Abbr|APU's|Auxiliary Power Unit's}} operation are simulated to a large extent. [[Howto:Aerial_refueling|Mid-air refueling]] is also implemented.

The navigation instruments are [[Tactical_Air_Navigation|TACAN]], {{Abbr|ILS|Instrument Landing System}} and also a VHF so you can have homing on a VOR station.

Several external loads are available and the [[HUD]] provides a {{abbr|CCIP|Continuous Computed Impact Point}}.

== Keybinds ==
<code>j/k</code> Extend/Retract Speedbrakes

<code>[/]</code> Extend/Retract Flaps

<code>e</code> GAU-8 Trigger

<code>E</code> Drop Ordnance

<code>Shift+q</code> Flares

===Electrical power with APU starting procedure===
[[File:A-10-electrical-power-control-panel.jpg|thumb|Electrical control panel|link=https://wiki.flightgear.org/File:A-10-electrical-power-control-panel.jpg]]At FlightGear startup, both electrical power and APU are shut down and there is no external power supplied.

You, might see, early on, some needles spinning back on the engines gauges panel and the VSI ... this is only a software initialization artifact.

So, look at the right console, there is a panel with 6 switches, that's the Main Electrical Control Panel. Hit Ctrl-c and you will have a view of where to click.

Let's connect the battery: switch on the battery switch. A few indicators should light up, but not all of them. Now with the battery connected you can start the APU.

The APU start/stop switch is located near the throttle on the left console. Switch it on. Now check the APU's tachometer and EGT on the engine gauge panel.

If the APU has started successfuly you should see the EGT (Exhaust Gas Temperature) rapidly climb to 800/900 °C and then stabilize when the RPMs reach 60%.[[File:A-10-throttle-engine-start.jpg|thumb|Throttle, engines operation and APU panel|link=https://wiki.flightgear.org/File:A-10-throttle-engine-start.jpg]]Now the APU has sufficient RPMs to provide electrical power through its generator. So let's turn on the APU generator. This one is on the main electrical control panel, upper left corner of the electrical control panel, right console again.

With the APU generator powered up most of the instruments receive electrical power and now the AOA]] indexer lights up and the HSI (the compass) and ADI (artificial horizon) look much better.

At 85% RPM the APU supplies enough bleed air to start the engines.

[[File:engine-gauges.jpg|thumb|APU running, Engines gauges at stop.|link=https://wiki.flightgear.org/File:Engine-gauges.jpg]]
===Engines starting procedure===
Now that we have minimum electrical power and bleed air supplied by the APU, starting the engines is straight forward.

Just click on one of the throttle rails (Ctrl-c to see them), the throttle will move from stop to idle and the engine start. Wait for the starting cycle light to turn off, turn on the corresponding generator and repeat with the second engine.

Now the complete electrical circuit is powered and you can stop the APU to save some fuel. It wont be useful anymore. (This could change with future development of engines failures...)

===Fuel System===
FlightGear A-10 starts with all internal tanks full.

2 wing tanks (left and right), 2 fuselage tanks: left main (aft) linked to left system and right main (forward) linked to right system, up to 3 external tanks (2 wings and 1 fuselage).

Normally the left wing and left main tanks feed the left engine and the APU. The right wing and right main tanks feed the right engine. The two feed lines can be interconnected by opening the cross feed valve ('''E''' switch).

The wing boost pumps ('''G''' switch) supply the respective engines until the wing tanks are empty, then the wing boost pumps automatically shut off. The main boost pumps then supply the respective engines with the remainder fuel in main tanks.

In case of a wing tank boost pump failure, the wing tank fuel will gravity feed its respective main tank if the main tank fuel level is below 600 lbs. Check valves prevent reverse fuel flow from the main tanks to the wing tanks.

In case of a main tank boost pump failure, the affected engine will suction-feed from the affected tank for all power setting up to an altitude of nearly 10,000 feet.

Unequal fuel level between left (aft) main and right (forward) main tank (imbalance superior 750 lbs) will cause a longitudinal CG shift that may exceed allowable limits. In this case, opening the valve "tank gate" create a link between the two main tanks.

Fuel from the external tanks is transfered to the wing or main tanks by pressure from the bleed air system. Wing tanks can be topped when the fuel level is below 1590 lbs. Main tanks can be topped when the fuel level is below 3034 lbs. The cycling is repeated until fuel is depleted from the external wing tanks first, and external fuselage tank secondly.

For negative G flight, collector tanks will supply the engine with sufficient fuel for 10 seconds operation at MAX power.

With fully loaded fuel tanks and a full load of armament, the A-10 is heavy--about 50,000 pounds. At this weight the plane is quite difficult to fly. Symptoms you would notice are difficult to take off, difficulty gaining altitude, difficult to manoeuvre without triggering stall warnings or actual stalls.

To avoid these problems, if you choose to equip the plane with full armament you may wish to fill the tanks only half full or so--the plane becomes much easier to fly and half fuel is still enough for a reasonably long flight.[[File:A-10-fuel-control-doc.jpg|thumb|Fuel Control panel.|link=https://wiki.flightgear.org/File:A-10-fuel-control-doc.jpg]]The '''Fuel Control panel''' is located on the forward part of left console. 1 lever, 4 push buttons and 8 switches are functional.

:('''A''') Fill Disable buttons, left and right wings tanks. Here fill disabled (button up showing red stripe). Refuel disabled for the wings tanks.
:('''B''') Fill Disable buttons, left and right main tanks (practically forward and aft fuselage tanks). Here fill enabled (button down hiding red stripe). Refuel enabled for the main tanks.
:('''C''') Refuel Receiver Door lever.
:('''D''') External Tanks switches, Wings and Fuselage. Set to OFF to un-pressurize external tanks
:('''E''') Cross Feed switch, allow any operating boost pump to feed both engines.
:('''F''') Tank Gate switch, open a valve linking the left (aft) and right (forward) main fuel tanks.
:('''G''') Boost Pumps (Wing)
:('''H''') Boost Pumps (Main)
:
===HUD===
[[File:A-10-hud-control-panel.jpg|thumb|HUD Control panel|link=https://wiki.flightgear.org/File:A-10-hud-control-panel.jpg]]The Head Up Display is turned off by default at aircraft startup. To turn it on electrical power on at least one of the three generator is needed as it isn't wired to the battery.

The '''HUD Control panel''' is located on the upper left corner of the main instrument panel. Three knobs are functional.

:('''A''') Mode Selector Switch: Modes available are:
:* OFF
:* TEST (standard display, shows all possible HUD symbology in the actual aircraft)
:* NAV (standard display, shows only navigation-required symbology in the actual aircraft)
:* CCIP (standard display + Continually Computed Impact Point, this is very similar to the actual aircraft)
:* CCRP (standard display, + Continually Computed Release Point in the actual aircraft)
:* EXP (standard display)
:* STBY (standard display) Other than CCIP, all other modes have NAV as their placeholder. See later in Weapons System about HUD use.
:('''B''') INTEN knob: Adjust the HUD luminosity.
:('''C''') DEPR knob: Changes the vertical position of the primary aiming reticle in the HUD, There is a digital index in the HUD showing its position, range from -1.00 to 1.00 followed by the letter "D".

'''HUD Symbology:'''[[File:A-10-hud-symbology.jpg|thumb|HUD Symbology|link=https://wiki.flightgear.org/File:A-10-hud-symbology.jpg]]
:('''D''') Pitch ladder.
:('''E''') Indicated Air Speed, Kts.
:('''F''') Primary Aiming Reticle.
:('''G''') Horizon Line
:('''H''') Primary Aiming Reticle Digital index.
:('''I''') Magnetic Heading Tape.
:('''J''') Indicated Altitude in feet (ASL).
:('''K''') Radar Altitude in feet (AGL) followed by letter "R".
:('''I''') Aircraft Pitch in degrees, boxed.
:('''M''') Total Velocity Vector indicator.
:('''N''') Pointer showing the rudders deflection.
:
===Weapons system===
Weapons Currently Available:

* LAU-68 (Launcher with 7 WP rockets)
* Mk-82 (Available in single and triple racks)
* AIM-9 (A/A Missile, available in dual racks)
* AN/ALQ-131 (ECM pod, currently no use)

[[File:A-10-arm-1.jpg|thumb|Armament panel|link=https://wiki.flightgear.org/File:A-10-arm-1.jpg]]Be sure to have electric power before trying to use the armament panel. The gun's rounds counter ('''A''') should be lighted in blue and the HUD should be active (not required to use the weapons, but it's good to have it before you turn your weapons on).

First of all push up the Master Switch to ARM ('''B''').

To use the gun, push up the Gun Rate Switch to HI (right of the rounds counter). At the top/left of the main panel a green light indicating 'Gun Ready' will light up. Press <code>e</code> to fire the gun. Aiming is done with the <code>+</code> on the HUD.

To release the Mk-82s and fire the LAU-68s, select the green squares in the center of the weapons panel and press <code>E</code> to fire. Keep in mind that only one type of weapon can be selected at one time, and the order in which you select the pylons will affect the order in which the ordnance on them is released.

To use the AIM-9s, turn the AIM-9 Mode Knob ('''C''') to SEL (click on the right side of the knob). Now a big circle appears on the HUD symbology, that the searching aera of the AIM-9. Now select the pylons you have mounted your sidewinders on (either 0, 11, or both), and you should hear the seeker sound. This sound is only audible when an AIM-9 is available, selected and searching. Press key 'E' to fire the AIM-9

== Gallery ==
<gallery>
File:Hawg-5.png
File:Hawg-3.png
File:Hawg-1.png
File:Hawg-2.png
File:Hawg-4.png
File:A-10-2.png|A-10 using its GAU-8 30mm Gun
File:A-10 Warthog in Bombable.png|alt=A-10 in Bombable|A-10 in Bombable
File:A-10.jpg
</gallery>

==See also==
[[A-10 Thunderbolt II FDM]]
==External links==
*[http://brenthugh.com/flightgear/Sun_Valley_Tank_Invasion1.zip Several ground bombing scenarios suitable for the A-10, involving moving and static tank formations, explodable M1 Abrams tanks, etc.] '''IMPORTANT: Does not work on most recent versions of FlightGear.''' It's a pity, I know :(
*A-10 Development Discord Server: https://discord.gg/RmtjmsT5vS
{{air-to-air refueling}}

Fairchild Republic A-10 Thunderbolt II, OPRF Version

2021-10-14T09:15:06Z

Zorka: Added keybind info, some minor formatting

The '''Fairchild A-10 Thunderbolt II''' (aka '''Warthog''') offers a wide variety of features and controls. Special features include the ability to simulate ordnance use, and a detailed 3D textured cockpit. Many of the A-10's flight systems are modeled as well, such as support for [[Tactical_Air_Navigation|TACAN]].
{{infobox aircraft
| name = Fairchild A-10
| hangar = FGADDON
| aircraft = A-10
| image = A-10-3.png
| alt = The "Warthog"
| image2 = A-1-1.png
| alt2 = A-10 Warthog Taking off from KXTA
| type = Military aircraft/Attack aircraft
| config = Low wing aircraft
| propulsion = Twinjet
| manufacturer = Fairchild Republic
| authors = Lee Elliott/Alexis Bory/David Bastien, Pinto, Steve Brown, J Maverick 16, Zorka, Eagle01, Wolf
| fdm = YASim
| fgname = A-10
| status-fdm = 4
| status-systems = 5
| status-cockpit = 4
| status-model = 4
| ready =airrefuel
| wikipedia = Fairchild Republic A-10 Thunderbolt II
| navbar = 1
}}
This is the version used by [[Operation Red Flag|OPRF (Operation Red Flag)]] and is the branch that is being actively developed.

==About the aircraft==
The Fairchild Republic A-10, nicknamed "Warthog," is a U.S. single-seat, twin-engine, very robust jet aircraft designed for ground attack.
==User's Manual==
In the current version, the aircraft simulation begins with the aircraft powered down and [[Emesary|Emesary damage]] enabled.

The electrical power systems and the {{Abbr|APU's|Auxiliary Power Unit's}} operation are simulated to a large extent. [[Howto:Aerial_refueling|Mid-air refueling]] is also implemented.

The navigation instruments are [[Tactical_Air_Navigation|TACAN]], {{Abbr|ILS|Instrument Landing System}} and also a VHF so you can have homing on a VOR station.

Several external loads are available and the [[HUD]] provides a {{abbr|CCIP|Continuous Computed Impact Point}}.

== Keybinds ==
<code>j/k</code> Extend/Retract Speedbrakes

<code>[/]</code> Extend/Retract Flaps

<code>e</code> GAU-8 Trigger

<code>E</code> Drop Ordnance

<code>Shift+q</code> Flares

===Electrical power with APU starting procedure===
[[File:A-10-electrical-power-control-panel.jpg|thumb|Electrical control panel|link=https://wiki.flightgear.org/File:A-10-electrical-power-control-panel.jpg]]At FlightGear startup, both electrical power and APU are shut down and there is no external power supplied.

You, might see, early on, some needles spinning back on the engines gauges panel and the VSI ... this is only a software initialization artifact.

So, look at the right console, there is a panel with 6 switches, that's the Main Electrical Control Panel. Hit Ctrl-c and you will have a view of where to click.

Let's connect the battery: switch on the battery switch. A few indicators should light up, but not all of them. Now with the battery connected you can start the APU.

The APU start/stop switch is located near the throttle on the left console. Switch it on. Now check the APU's tachometer and EGT on the engine gauge panel.

If the APU has started successfuly you should see the EGT (Exhaust Gas Temperature) rapidly climb to 800/900 °C and then stabilize when the RPMs reach 60%.[[File:A-10-throttle-engine-start.jpg|thumb|Throttle, engines operation and APU panel|link=https://wiki.flightgear.org/File:A-10-throttle-engine-start.jpg]]Now the APU has sufficient RPMs to provide electrical power through its generator. So let's turn on the APU generator. This one is on the main electrical control panel, upper left corner of the electrical control panel, right console again.

With the APU generator powered up most of the instruments receive electrical power and now the AOA]] indexer lights up and the HSI (the compass) and ADI (artificial horizon) look much better.

At 85% RPM the APU supplies enough bleed air to start the engines.

[[File:engine-gauges.jpg|thumb|APU running, Engines gauges at stop.|link=https://wiki.flightgear.org/File:Engine-gauges.jpg]]
===Engines starting procedure===
Now that we have minimum electrical power and bleed air supplied by the APU, starting the engines is straight forward.

Just click on one of the throttle rails (Ctrl-c to see them), the throttle will move from stop to idle and the engine start. Wait for the starting cycle light to turn off, turn on the corresponding generator and repeat with the second engine.

Now the complete electrical circuit is powered and you can stop the APU to save some fuel. It wont be useful anymore. (This could change with future development of engines failures...)

===Fuel System===
FlightGear A-10 starts with all internal tanks full.

2 wing tanks (left and right), 2 fuselage tanks: left main (aft) linked to left system and right main (forward) linked to right system, up to 3 external tanks (2 wings and 1 fuselage).

Normally the left wing and left main tanks feed the left engine and the APU. The right wing and right main tanks feed the right engine. The two feed lines can be interconnected by opening the cross feed valve ('''E''' switch).

The wing boost pumps ('''G''' switch) supply the respective engines until the wing tanks are empty, then the wing boost pumps automatically shut off. The main boost pumps then supply the respective engines with the remainder fuel in main tanks.

In case of a wing tank boost pump failure, the wing tank fuel will gravity feed its respective main tank if the main tank fuel level is below 600 lbs. Check valves prevent reverse fuel flow from the main tanks to the wing tanks.

In case of a main tank boost pump failure, the affected engine will suction-feed from the affected tank for all power setting up to an altitude of nearly 10,000 feet.

Unequal fuel level between left (aft) main and right (forward) main tank (imbalance superior 750 lbs) will cause a longitudinal CG shift that may exceed allowable limits. In this case, opening the valve "tank gate" create a link between the two main tanks.

Fuel from the external tanks is transfered to the wing or main tanks by pressure from the bleed air system. Wing tanks can be topped when the fuel level is below 1590 lbs. Main tanks can be topped when the fuel level is below 3034 lbs. The cycling is repeated until fuel is depleted from the external wing tanks first, and external fuselage tank secondly.

For negative G flight, collector tanks will supply the engine with sufficient fuel for 10 seconds operation at MAX power.

With fully loaded fuel tanks and a full load of armament, the A-10 is heavy--about 50,000 pounds. At this weight the plane is quite difficult to fly. Symptoms you would notice are difficult to take off, difficulty gaining altitude, difficult to manoeuvre without triggering stall warnings or actual stalls.

To avoid these problems, if you choose to equip the plane with full armament you may wish to fill the tanks only half full or so--the plane becomes much easier to fly and half fuel is still enough for a reasonably long flight.[[File:A-10-fuel-control-doc.jpg|thumb|Fuel Control panel.|link=https://wiki.flightgear.org/File:A-10-fuel-control-doc.jpg]]The '''Fuel Control panel''' is located on the forward part of left console. 1 lever, 4 push buttons and 8 switches are functional.

:('''A''') Fill Disable buttons, left and right wings tanks. Here fill disabled (button up showing red stripe). Refuel disabled for the wings tanks.
:('''B''') Fill Disable buttons, left and right main tanks (practically forward and aft fuselage tanks). Here fill enabled (button down hiding red stripe). Refuel enabled for the main tanks.
:('''C''') Refuel Receiver Door lever.
:('''D''') External Tanks switches, Wings and Fuselage. Set to OFF to un-pressurize external tanks
:('''E''') Cross Feed switch, allow any operating boost pump to feed both engines.
:('''F''') Tank Gate switch, open a valve linking the left (aft) and right (forward) main fuel tanks.
:('''G''') Boost Pumps (Wing)
:('''H''') Boost Pumps (Main)
:
===HUD===
[[File:A-10-hud-control-panel.jpg|thumb|HUD Control panel|link=https://wiki.flightgear.org/File:A-10-hud-control-panel.jpg]]The Head Up Display is turned off by default at aircraft startup. To turn it on electrical power on at least one of the three generator is needed as it isn't wired to the battery.

The '''HUD Control panel''' is located on the upper left corner of the main instrument panel. Three knobs are functional.

:('''A''') Mode Selector Switch: Modes available are:
:* OFF
:* TEST (standard display, shows all possible HUD symbology in the actual aircraft)
:* NAV (standard display, shows only navigation-required symbology in the actual aircraft)
:* CCIP (standard display + Continually Computed Impact Point, this is very similar to the actual aircraft)
:* CCRP (standard display, + Continually Computed Release Point in the actual aircraft)
:* EXP (standard display)
:* STBY (standard display) Other than CCIP, all other modes have NAV as their placeholder. See later in Weapons System about HUD use.
:('''B''') INTEN knob: Adjust the HUD luminosity.
:('''C''') DEPR knob: Changes the vertical position of the primary aiming reticle in the HUD, There is a digital index in the HUD showing its position, range from -1.00 to 1.00 followed by the letter "D".

'''HUD Symbology:'''[[File:A-10-hud-symbology.jpg|thumb|HUD Symbology|link=https://wiki.flightgear.org/File:A-10-hud-symbology.jpg]]
:('''D''') Pitch ladder.
:('''E''') Indicated Air Speed, Kts.
:('''F''') Primary Aiming Reticle.
:('''G''') Horizon Line
:('''H''') Primary Aiming Reticle Digital index.
:('''I''') Magnetic Heading Tape.
:('''J''') Indicated Altitude in feet (ASL).
:('''K''') Radar Altitude in feet (AGL) followed by letter "R".
:('''I''') Aircraft Pitch in degrees, boxed.
:('''M''') Total Velocity Vector indicator.
:('''N''') Pointer showing the rudders deflection.
:
===Weapons system===
Weapons Currently Available:

* LAU-68 (Launcher with 7 WP rockets)
* Mk-82 (Available in single and triple racks)
* AIM-9 (A/A Missile, available in dual racks)
* AN/ALQ-131 (ECM pod, currently no use)

[[File:A-10-arm-1.jpg|thumb|Armament panel|link=https://wiki.flightgear.org/File:A-10-arm-1.jpg]]Be sure to have electric power before trying to use the armament panel. The gun's rounds counter ('''A''') should be lighted in blue and the HUD should be active (not required to use the weapons, but it's good to have it before you turn your weapons on).

First of all push up the Master Switch to ARM ('''B''').

To use the gun, push up the Gun Rate Switch to HI (right of the rounds counter). At the top/left of the main panel a green light indicating 'Gun Ready' will light up. Press <code>e</code> to fire the gun. Aiming is done with the <code>+</code> on the HUD.

To release the Mk-82s and fire the LAU-68s, select the green squares in the center of the weapons panel and press <code>E</code> to fire. Keep in mind that only one type of weapon can be selected at one time, and the order in which you select the pylons will affect the order in which the ordnance on them is released.

To use the AIM-9s, turn the AIM-9 Mode Knob ('''C''') to SEL (click on the right side of the knob). Now a big circle appears on the HUD symbology, that the searching aera of the AIM-9. Now select the pylons you have mounted your sidewinders on (either 0, 11, or both), and you should hear the seeker sound. This sound is only audible when an AIM-9 is available, selected and searching. Press key 'E' to fire the AIM-9

== Gallery ==
<gallery>
File:Hawg-5.png
File:Hawg-3.png
File:Hawg-1.png
File:Hawg-2.png
File:Hawg-4.png
File:A-10-2.png|A-10 using its GAU-8 30mm Gun
File:A-10 Warthog in Bombable.png|alt=A-10 in Bombable|A-10 in Bombable
File:A-10.jpg
</gallery>

==See also==
[[A-10 Thunderbolt II FDM]]
==External links==
*[http://brenthugh.com/flightgear/Sun_Valley_Tank_Invasion1.zip Several ground bombing scenarios suitable for the A-10, involving moving and static tank formations, explodable M1 Abrams tanks, etc.] '''IMPORTANT: Does not work on most recent versions of FlightGear.''' It's a pity, I know :(
*A-10 Development Discord Server: https://discord.gg/RmtjmsT5vS
{{air-to-air refueling}}

Fairchild Republic A-10 Thunderbolt II, OPRF Version

2021-10-14T09:10:55Z

Zorka:

The '''Fairchild A-10 Thunderbolt II''' (aka '''Warthog''') offers a wide variety of features and controls. Special features include the ability to simulate ordnance use, and a detailed 3D textured cockpit. Many of the A-10's flight systems are modeled as well, such as support for [[Tactical_Air_Navigation|TACAN]].
{{infobox aircraft
| name = Fairchild A-10
| hangar = FGADDON
| aircraft = A-10
| image = A-10-3.png
| alt = The "Warthog"
| image2 = A-1-1.png
| alt2 = A-10 Warthog Taking off from KXTA
| type = Military aircraft/Attack aircraft
| config = Low wing aircraft
| propulsion = Twinjet
| manufacturer = Fairchild Republic
| authors = Lee Elliott/Alexis Bory/David Bastien, Pinto, Steve Brown, J Maverick 16, Zorka, Eagle01, Wolf
| fdm = YASim
| fgname = A-10
| status-fdm = 4
| status-systems = 5
| status-cockpit = 4
| status-model = 4
| ready =airrefuel
| wikipedia = Fairchild Republic A-10 Thunderbolt II
| navbar = 1
}}
This is the version used by [[Operation Red Flag|OPRF (Operation Red Flag)]] and is the branch that is being actively developed.

==About the aircraft==
The Fairchild Republic A-10, nicknamed "Warthog," is a U.S. single-seat, twin-engine, very robust jet aircraft designed for ground attack.
==User's Manual==
In the current version, the aircraft simulation begins with the aircraft powered down and [[Emesary|Emesary damage]] enabled.

The electrical power systems and the {{Abbr|APU's|Auxiliary Power Unit's}} operation are simulated to a large extent. [[Howto:Aerial_refueling|Mid-air refueling]] is also implemented.

The navigation instruments are [[Tactical_Air_Navigation|TACAN]], {{Abbr|ILS|Instrument Landing System}} and also a VHF so you can have homing on a VOR station.

Several external loads are available and the [[HUD]] provides a {{abbr|CCIP|Continuous Computed Impact Point}}.

== Keybinds ==
<code>j/k</code> Extend/Retract Speedbrakes

<code>[/]</code> Extend/Retract Flaps

===Electrical power with APU starting procedure===
[[File:A-10-electrical-power-control-panel.jpg|thumb|Electrical control panel|link=https://wiki.flightgear.org/File:A-10-electrical-power-control-panel.jpg]]At FlightGear startup, both electrical power and APU are shut down and there is no external power supplied.

You, might see, early on, some needles spinning back on the engines gauges panel and the VSI ... this is only a software initialization artifact.

So, look at the right console, there is a panel with 6 switches, that's the Main Electrical Control Panel. Hit Ctrl-c and you will have a view of where to click.

Let's connect the battery: switch on the battery switch. A few indicators should light up, but not all of them. Now with the battery connected you can start the APU.

The APU start/stop switch is located near the throttle on the left console. Switch it on. Now check the APU's tachometer and EGT on the engine gauge panel.

If the APU has started successfuly you should see the EGT (Exhaust Gas Temperature) rapidly climb to 800/900 °C and then stabilize when the RPMs reach 60%.[[File:A-10-throttle-engine-start.jpg|thumb|Throttle, engines operation and APU panel|link=https://wiki.flightgear.org/File:A-10-throttle-engine-start.jpg]]Now the APU has sufficient RPMs to provide electrical power through its generator. So let's turn on the APU generator. This one is on the main electrical control panel, upper left corner of the electrical control panel, right console again.

With the APU generator powered up most of the instruments receive electrical power and now the AOA]] indexer lights up and the HSI (the compass) and ADI (artificial horizon) look much better.

At 85% RPM the APU supplies enough bleed air to start the engines.

[[File:engine-gauges.jpg|thumb|APU running, Engines gauges at stop.|link=https://wiki.flightgear.org/File:Engine-gauges.jpg]]
===Engines starting procedure===
Now that we have minimum electrical power and bleed air supplied by the APU, starting the engines is straight forward.

Just click on one of the throttle rails (Ctrl-c to see them), the throttle will move from stop to idle and the engine start. Wait for the starting cycle light to turn off, turn on the corresponding generator and repeat with the second engine.

Now the complete electrical circuit is powered and you can stop the APU to save some fuel. It wont be useful anymore. (This could change with future development of engines failures...)

===Fuel System===
FlightGear A-10 starts with all internal tanks full.

2 wing tanks (left and right), 2 fuselage tanks: left main (aft) linked to left system and right main (forward) linked to right system, up to 3 external tanks (2 wings and 1 fuselage).

Normally the left wing and left main tanks feed the left engine and the APU. The right wing and right main tanks feed the right engine. The two feed lines can be interconnected by opening the cross feed valve ('''E''' switch).

The wing boost pumps ('''G''' switch) supply the respective engines until the wing tanks are empty, then the wing boost pumps automatically shut off. The main boost pumps then supply the respective engines with the remainder fuel in main tanks.

In case of a wing tank boost pump failure, the wing tank fuel will gravity feed its respective main tank if the main tank fuel level is below 600 lbs. Check valves prevent reverse fuel flow from the main tanks to the wing tanks.

In case of a main tank boost pump failure, the affected engine will suction-feed from the affected tank for all power setting up to an altitude of nearly 10,000 feet.

Unequal fuel level between left (aft) main and right (forward) main tank (imbalance superior 750 lbs) will cause a longitudinal CG shift that may exceed allowable limits. In this case, opening the valve "tank gate" create a link between the two main tanks.

Fuel from the external tanks is transfered to the wing or main tanks by pressure from the bleed air system. Wing tanks can be topped when the fuel level is below 1590 lbs. Main tanks can be topped when the fuel level is below 3034 lbs. The cycling is repeated until fuel is depleted from the external wing tanks first, and external fuselage tank secondly.

For negative G flight, collector tanks will supply the engine with sufficient fuel for 10 seconds operation at MAX power.

With fully loaded fuel tanks and a full load of armament, the A-10 is heavy--about 50,000 pounds. At this weight the plane is quite difficult to fly. Symptoms you would notice are difficult to take off, difficulty gaining altitude, difficult to manoeuvre without triggering stall warnings or actual stalls.

To avoid these problems, if you choose to equip the plane with full armament you may wish to fill the tanks only half full or so--the plane becomes much easier to fly and half fuel is still enough for a reasonably long flight.[[File:A-10-fuel-control-doc.jpg|thumb|Fuel Control panel.|link=https://wiki.flightgear.org/File:A-10-fuel-control-doc.jpg]]The '''Fuel Control panel''' is located on the forward part of left console. 1 lever, 4 push buttons and 8 switches are functional.

:('''A''') Fill Disable buttons, left and right wings tanks. Here fill disabled (button up showing red stripe). Refuel disabled for the wings tanks.
:('''B''') Fill Disable buttons, left and right main tanks (practically forward and aft fuselage tanks). Here fill enabled (button down hiding red stripe). Refuel enabled for the main tanks.
:('''C''') Refuel Receiver Door lever.
:('''D''') External Tanks switches, Wings and Fuselage. Set to OFF to un-pressurize external tanks
:('''E''') Cross Feed switch, allow any operating boost pump to feed both engines.
:('''F''') Tank Gate switch, open a valve linking the left (aft) and right (forward) main fuel tanks.
:('''G''') Boost Pumps (Wing)
:('''H''') Boost Pumps (Main)
:
===HUD===
[[File:A-10-hud-control-panel.jpg|thumb|HUD Control panel|link=https://wiki.flightgear.org/File:A-10-hud-control-panel.jpg]]The Head Up Display is turned off by default at aircraft startup. To turn it on electrical power on at least one of the three generator is needed as it isn't wired to the battery.

The '''HUD Control panel''' is located on the upper left corner of the main instrument panel. Three knobs are functional.

:('''A''') Mode Selector Switch: Modes available are:
:* OFF
:* TEST (standard display, shows all possible HUD symbology in the actual aircraft)
:* NAV (standard display, shows only navigation-required symbology in the actual aircraft)
:* CCIP (standard display + Continually Computed Impact Point, this is very similar to the actual aircraft)
:* CCRP (standard display, + Continually Computed Release Point in the actual aircraft)
:* EXP (standard display)
:* STBY (standard display) Other than CCIP, all other modes have NAV as their placeholder. See later in Weapons System about HUD use.
:('''B''') INTEN knob: Adjust the HUD luminosity.
:('''C''') DEPR knob: Changes the vertical position of the primary aiming reticle in the HUD, There is a digital index in the HUD showing its position, range from -1.00 to 1.00 followed by the letter "D".

'''HUD Symbology:'''[[File:A-10-hud-symbology.jpg|thumb|HUD Symbology|link=https://wiki.flightgear.org/File:A-10-hud-symbology.jpg]]
:('''D''') Pitch ladder.
:('''E''') Indicated Air Speed, Kts.
:('''F''') Primary Aiming Reticle.
:('''G''') Horizon Line
:('''H''') Primary Aiming Reticle Digital index.
:('''I''') Magnetic Heading Tape.
:('''J''') Indicated Altitude in feet (ASL).
:('''K''') Radar Altitude in feet (AGL) followed by letter "R".
:('''I''') Aircraft Pitch in degrees, boxed.
:('''M''') Total Velocity Vector indicator.
:('''N''') Pointer showing the rudders deflection.
:
===Weapons system===
Weapons Currently Available:

* LAU-68 (Launcher with 7 WP rockets)
* Mk-82 (Available in single and triple racks)
* AIM-9 (A/A Missile, available in dual racks)
* AN/ALQ-131 (ECM pod, currently no use)

[[File:A-10-arm-1.jpg|thumb|Armament panel|link=https://wiki.flightgear.org/File:A-10-arm-1.jpg]]Be sure to have electric power before trying to use the armament panel. The gun's rounds counter ('''A''') should be lighted in blue and the HUD should be active (not required to use the weapons, but it's good to have it before you turn your weapons on).

First of all push up the Master Switch to ARM ('''B''').

To use the gun, push up the Gun Rate Switch to HI (right of the rounds counter). At the top/left of the main panel a green light indicating 'Gun Ready' will light up. Press <code>e</code> to fire the gun. Aiming is done with the <code>+</code> on the HUD.

To release the Mk-82s and fire the LAU-68s, select the green squares in the center of the weapons panel and press <code>E</code> to fire. Keep in mind that only one type of weapon can be selected at one time, and the order in which you select the pylons will affect the order in which the ordnance on them is released.

To use the AIM-9s, turn the AIM-9 Mode Knob ('''C''') to SEL (click on the right side of the knob). Now a big circle appears on the HUD symbology, that the searching aera of the AIM-9. Now select the pylons you have mounted your sidewinders on (either 0, 11, or both), and you should hear the seeker sound. This sound is only audible when an AIM-9 is available, selected and searching. Press key 'E' to fire the AIM-9

== Gallery ==
<gallery>
File:Hawg-5.png
File:Hawg-3.png
File:Hawg-1.png
File:Hawg-2.png
File:Hawg-4.png
File:A-10-2.png|A-10 using its GAU-8 30mm Gun
File:A-10 Warthog in Bombable.png|alt=A-10 in Bombable|A-10 in Bombable
File:A-10.jpg
</gallery>

==See also==
[[A-10 Thunderbolt II FDM]]
==External links==
*[http://brenthugh.com/flightgear/Sun_Valley_Tank_Invasion1.zip Several ground bombing scenarios suitable for the A-10, involving moving and static tank formations, explodable M1 Abrams tanks, etc.] Disclaimer: Does not work on most recent versions of FlightGear. It's a pity, I know :(
*A-10 Development Discord Server: https://discord.gg/RmtjmsT5vS
{{air-to-air refueling}}

Discord

2021-10-14T07:22:06Z

Zorka: Added A-10 Invite

'''Discord''' is used in the FlightGear community as an alternative to [[Mumble]], [[TeamSpeak]], [[FGCom]] or [[Ventrilo]].

Discord is a free voice and chat software that can be downloaded as an app or used in a browser.

== Invite links ==
{{note|1=Its advised that you create a permanent account, instead of creating guest accounts as some people create duplicate accounts which clogs up the member logs and makes it more difficult to @mention people.}}

Furthermore many other FlightGear servers exist that you may need an personal invite to join. The easiest way to find them is to go to the FlightGear server and ask or ask in forums.

== FlightGear Communities on Discord ==

=== General, Help and Support, Communities ===

{| class=wikitable
! Topic !! Invite link
|-
| FlightGear
| https://discord.gg/rzuV2DR
|-
| FlightGear FDM School
| https://discord.gg/Uyrtsar
|-
| FlightGear Air Race League
| https://discord.gg/HCAuU9D
|-
| FlightGear Virtual Alliance
| https://discord.gg/VqzTG2N
|-
| FG Events
| https://discord.gg/GY4N6Cu
|-
| FG FDM School
| https://discord.gg/U5KXyMU
|-
| FlightGear Republic, A friendly community about FlightGear.
| https://discord.gg/sBJy46Uq7z
|}

=== Military Aviation Communities ===

{| class=wikitable
! Topic !! Invite link
|-
| Operation Red Flag military FG community (OPRF)
| https://discord.gg/ptVapkE
|-
| Combined Joint Task Force 50 (OPRF event planning/hosting and more)
| https://discord.gg/2nxjb6y
|-
| Warbirds, WWII-era aircraft
| https://discord.gg/yJaP5Wn
|}

=== Country Specific Communities ===

{| class=wikitable
! Topic !! Invite link
|-
| FlightGear Australia (Scenery Development & Community)
| https://discord.gg/JzTEXsZ
|-
| FlightGear Italia (ITA Mercenaries)
| https://discord.gg/5RzyXRf
|-
| FlightGear Germany
| https://discord.gg/FNnpjCPSze
|-
| FlightGear Indian Community
| https://discord.gg/Tu7n5FmG5S
|-
| FlightGear Asia
| https://discord.gg/7saCkA2jQj
|-
| FlightGear Hong Kong
| https://discord.gg/9QVKcT6skU
|-
|FlightGear Myanmar
|https://discord.gg/VbT88KEGrk
|}

=== Aircraft-specific ===
{| class=wikitable
! Aircraft !! Invite link
|-
| Aermacchi MB-339
| https://discord.gg/vNZ5ZPv
|-
| Airbus [[Airbus A320 Family|A320]] & A330 Development
| https://discord.gg/7kzg9Te
|-
| Airbus A350 Development
| https://discord.gg/vK5f2s6
|-
| Boing F/A-18C Hornet
| https://discord.gg/8GzpdK4j8P
|-
| LincolnWorks (747 and A380)
| https://discord.gg/2DMVpnJ
|-
| F-111 Aardvark
| https://discord.gg/DSrSbmx
|-
| [[General Dynamics F-16 Fighting Falcon]]
| https://discord.gg/8RcYnjA
|-
| MD-11 and Autoflight by Octal
| https://discord.gg/gxAhC3j
|-
| [[Mikoyan-Gurevich MiG-21bis]]
| https://discord.gg/bs8xyz3
|-
| [[Mirage 2000]]
| https://discord.gg/xZ3r2KR
|-
| Panavia Tornado
| https://discord.gg/26rvkr2
|-
| [[Saab 37 Viggen]]
| https://discord.gg/RJTwS9a
|-
| SEPECAT Jaguar
| https://discord.gg/G5q5XYN
|-
| FG-1000 Stealth Fighter
| https://discord.gg/3MFZauxyPW
|-
|Boeing 777
|https://discord.gg/8McTuYdK
|-
|A-10A Warthog
|https://discord.gg/RmtjmsT5vS
|}

== External links ==
* https://discord.com/ Official website

[[de:Discord]]

[[Category:Software]]
[[Category:Community]]
[[Category:Air Traffic Control]]

Fairchild Republic A-10 Thunderbolt II, OPRF Version

2021-08-22T15:56:20Z

Zorka:

The '''Fairchild A-10 Thunderbolt II''' (aka '''Warthog''') offers a wide variety of features and controls. Special features include the ability to simulate ordnance use, and a detailed 3D textured cockpit. Many of the A-10's flight systems are modeled as well, such as support for [[Tactical_Air_Navigation|TACAN]].
{{infobox aircraft
| name = Fairchild A-10
| hangar = FGADDON
| aircraft = A-10
| image = A-10-3.png
| alt = The "Warthog"
| image2 = A-1-1.png
| alt2 = A-10 Warthog Taking off from KXTA
| type = Military aircraft/Attack aircraft
| config = Low wing aircraft
| propulsion = Twinjet
| manufacturer = Fairchild Republic
| authors = Lee Elliott/Alexis Bory/David Bastien, Pinto, Steve Brown, J Maverick 16, Zorka, Eagle01, Wolf
| fdm = YASim
| fgname = A-10
| status-fdm = 4
| status-systems = 5
| status-cockpit = 4
| status-model = 4
| ready = bombable/airrefuel
| wikipedia = Fairchild Republic A-10 Thunderbolt II
| navbar = 1
}}
This is the version used by [[Operation Red Flag|OPRF (Operation Red Flag)]] and is the branch that is being actively developed.

==About the aircraft==
The Fairchild Republic A-10, nicknamed "Warthog," is a U.S. single-seat, twin-engine, very robust jet aircraft designed for ground attack.
==User's Manual==
In the current version, the aircraft simulation begins with the aircraft powered down and [[Emesary|Emesary damage]] enabled.

The electrical power systems and the {{Abbr|APU's|Auxiliary Power Unit's}} operation are simulated to a large extent. [[Howto:Aerial_refueling|Mid-air refueling]] is also implemented.

The navigation instruments are [[Tactical_Air_Navigation|TACAN]], {{Abbr|ILS|Instrument Landing System}} and also a VHF so you can have homing on a VOR station.

Several external loads are available and the [[HUD]] provides a {{abbr|CCIP|Continuous Computed Impact Point}}.

== Keybinds ==
<code>j/k</code> Extend/Retract Speedbrakes

<code>[/]</code> Extend/Retract Flaps

===Electrical power with APU starting procedure===
[[File:A-10-electrical-power-control-panel.jpg|thumb|Electrical control panel|link=https://wiki.flightgear.org/File:A-10-electrical-power-control-panel.jpg]]At FlightGear startup, both electrical power and APU are shut down and there is no external power supplied.

You, might see, early on, some needles spinning back on the engines gauges panel and the VSI ... this is only a software initialization artifact.

So, look at the right console, there is a panel with 6 switches, that's the Main Electrical Control Panel. Hit Ctrl-c and you will have a view of where to click.

Let's connect the battery: switch on the battery switch. A few indicators should light up, but not all of them. Now with the battery connected you can start the APU.

The APU start/stop switch is located near the throttle on the left console. Switch it on. Now check the APU's tachometer and EGT on the engine gauge panel.

If the APU has started successfuly you should see the EGT (Exhaust Gas Temperature) rapidly climb to 800/900 °C and then stabilize when the RPMs reach 60%.[[File:A-10-throttle-engine-start.jpg|thumb|Throttle, engines operation and APU panel|link=https://wiki.flightgear.org/File:A-10-throttle-engine-start.jpg]]Now the APU has sufficient RPMs to provide electrical power through its generator. So let's turn on the APU generator. This one is on the main electrical control panel, upper left corner of the electrical control panel, right console again.

With the APU generator powered up most of the instruments receive electrical power and now the AOA]] indexer lights up and the HSI (the compass) and ADI (artificial horizon) look much better.

At 85% RPM the APU supplies enough bleed air to start the engines.

[[File:engine-gauges.jpg|thumb|APU running, Engines gauges at stop.|link=https://wiki.flightgear.org/File:Engine-gauges.jpg]]
===Engines starting procedure===
Now that we have minimum electrical power and bleed air supplied by the APU, starting the engines is straight forward.

Just click on one of the throttle rails (Ctrl-c to see them), the throttle will move from stop to idle and the engine start. Wait for the starting cycle light to turn off, turn on the corresponding generator and repeat with the second engine.

Now the complete electrical circuit is powered and you can stop the APU to save some fuel. It wont be useful anymore. (This could change with future development of engines failures...)

===Fuel System===
FlightGear A-10 starts with all internal tanks full.

2 wing tanks (left and right), 2 fuselage tanks: left main (aft) linked to left system and right main (forward) linked to right system, up to 3 external tanks (2 wings and 1 fuselage).

Normally the left wing and left main tanks feed the left engine and the APU. The right wing and right main tanks feed the right engine. The two feed lines can be interconnected by opening the cross feed valve ('''E''' switch).

The wing boost pumps ('''G''' switch) supply the respective engines until the wing tanks are empty, then the wing boost pumps automatically shut off. The main boost pumps then supply the respective engines with the remainder fuel in main tanks.

In case of a wing tank boost pump failure, the wing tank fuel will gravity feed its respective main tank if the main tank fuel level is below 600 lbs. Check valves prevent reverse fuel flow from the main tanks to the wing tanks.

In case of a main tank boost pump failure, the affected engine will suction-feed from the affected tank for all power setting up to an altitude of nearly 10,000 feet.

Unequal fuel level between left (aft) main and right (forward) main tank (imbalance superior 750 lbs) will cause a longitudinal CG shift that may exceed allowable limits. In this case, opening the valve "tank gate" create a link between the two main tanks.

Fuel from the external tanks is transfered to the wing or main tanks by pressure from the bleed air system. Wing tanks can be topped when the fuel level is below 1590 lbs. Main tanks can be topped when the fuel level is below 3034 lbs. The cycling is repeated until fuel is depleted from the external wing tanks first, and external fuselage tank secondly.

For negative G flight, collector tanks will supply the engine with sufficient fuel for 10 seconds operation at MAX power.

With fully loaded fuel tanks and a full load of armament, the A-10 is heavy--about 50,000 pounds. At this weight the plane is quite difficult to fly. Symptoms you would notice are difficult to take off, difficulty gaining altitude, difficult to manoeuvre without triggering stall warnings or actual stalls.

To avoid these problems, if you choose to equip the plane with full armament you may wish to fill the tanks only half full or so--the plane becomes much easier to fly and half fuel is still enough for a reasonably long flight.[[File:A-10-fuel-control-doc.jpg|thumb|Fuel Control panel.|link=https://wiki.flightgear.org/File:A-10-fuel-control-doc.jpg]]The '''Fuel Control panel''' is located on the forward part of left console. 1 lever, 4 push buttons and 8 switches are functional.

:('''A''') Fill Disable buttons, left and right wings tanks. Here fill disabled (button up showing red stripe). Refuel disabled for the wings tanks.
:('''B''') Fill Disable buttons, left and right main tanks (practically forward and aft fuselage tanks). Here fill enabled (button down hiding red stripe). Refuel enabled for the main tanks.
:('''C''') Refuel Receiver Door lever.
:('''D''') External Tanks switches, Wings and Fuselage. Set to OFF to un-pressurize external tanks
:('''E''') Cross Feed switch, allow any operating boost pump to feed both engines.
:('''F''') Tank Gate switch, open a valve linking the left (aft) and right (forward) main fuel tanks.
:('''G''') Boost Pumps (Wing)
:('''H''') Boost Pumps (Main)
:
===HUD===
[[File:A-10-hud-control-panel.jpg|thumb|HUD Control panel|link=https://wiki.flightgear.org/File:A-10-hud-control-panel.jpg]]The Head Up Display is turned off by default at aircraft startup. To turn it on electrical power on at least one of the three generator is needed as it isn't wired to the battery.

The '''HUD Control panel''' is located on the upper left corner of the main instrument panel. Three knobs are functional.

:('''A''') Mode Selector Switch: Modes available are:
:* OFF
:* TEST (standard display, shows all possible HUD symbology in the actual aircraft)
:* NAV (standard display, shows only navigation-required symbology in the actual aircraft)
:* CCIP (standard display + Continually Computed Impact Point, this is very similar to the actual aircraft)
:* CCRP (standard display, + Continually Computed Release Point in the actual aircraft)
:* EXP (standard display)
:* STBY (standard display) Other than CCIP, all other modes have NAV as their placeholder. See later in Weapons System about HUD use.
:('''B''') INTEN knob: Adjust the HUD luminosity.
:('''C''') DEPR knob: Changes the vertical position of the primary aiming reticle in the HUD, There is a digital index in the HUD showing its position, range from -1.00 to 1.00 followed by the letter "D".

'''HUD Symbology:'''[[File:A-10-hud-symbology.jpg|thumb|HUD Symbology|link=https://wiki.flightgear.org/File:A-10-hud-symbology.jpg]]
:('''D''') Pitch ladder.
:('''E''') Indicated Air Speed, Kts.
:('''F''') Primary Aiming Reticle.
:('''G''') Horizon Line
:('''H''') Primary Aiming Reticle Digital index.
:('''I''') Magnetic Heading Tape.
:('''J''') Indicated Altitude in feet (ASL).
:('''K''') Radar Altitude in feet (AGL) followed by letter "R".
:('''I''') Aircraft Pitch in degrees, boxed.
:('''M''') Total Velocity Vector indicator.
:('''N''') Pointer showing the rudders deflection.
:
===Weapons system===
Weapons Currently Available:

* LAU-68 (Launcher with 7 WP rockets)
* Mk-82 (Available in single and triple racks)
* AIM-9 (A/A Missile, available in dual racks)
* AN/ALQ-131 (ECM pod, currently no use)

[[File:A-10-arm-1.jpg|thumb|Armament panel|link=https://wiki.flightgear.org/File:A-10-arm-1.jpg]]Be sure to have electric power before trying to use the armament panel. The gun's rounds counter ('''A''') should be lighted in blue and the HUD should be active (not required to use the weapons, but it's good to have it before you turn your weapons on).

First of all push up the Master Switch to ARM ('''B''').

To use the gun, push up the Gun Rate Switch to HI (right of the rounds counter). At the top/left of the main panel a green light indicating 'Gun Ready' will light up. Press <code>e</code> to fire the gun. Aiming is done with the <code>+</code> on the HUD.

To release the Mk-82s and fire the LAU-68s, select the green squares in the center of the weapons panel and press <code>E</code> to fire. Keep in mind that only one type of weapon can be selected at one time, and the order in which you select the pylons will affect the order in which the ordnance on them is released.

To use the AIM-9s, turn the AIM-9 Mode Knob ('''C''') to SEL (click on the right side of the knob). Now a big circle appears on the HUD symbology, that the searching aera of the AIM-9. Now select the pylons you have mounted your sidewinders on (either 0, 11, or both), and you should hear the seeker sound. This sound is only audible when an AIM-9 is available, selected and searching. Press key 'E' to fire the AIM-9

== Gallery ==
<gallery>
File:Hawg-5.png
File:Hawg-3.png
File:Hawg-1.png
File:Hawg-2.png
File:Hawg-4.png
File:A-10-2.png|A-10 using its GAU-8 30mm Gun
File:A-10 Warthog in Bombable.png|alt=A-10 in Bombable|A-10 in Bombable
File:A-10.jpg
</gallery>

==See also==
[[A-10 Thunderbolt II FDM]]
==External links==
*[http://brenthugh.com/flightgear/Sun_Valley_Tank_Invasion1.zip Several ground bombing scenarios suitable for the A-10, involving moving and static tank formations, explodable M1 Abrams tanks, etc.] Disclaimer: Does not work on most recent versions of FlightGear. It's a pity, I know :(
*A-10 Development Discord Server: https://discord.gg/RmtjmsT5vS
{{air-to-air refueling}}

File:Hawg-5.png

2021-08-22T14:46:27Z