MiG-21 Weapons Management: Difference between revisions
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The moving pipper uses an accelerometer, a gyro, and other inputs to attempt to accurately display where unguided armament is going. Most of the switches on the gunsight affect it in some way. The pipper is also affected by the throttle drum, which in-sim is moved with the {{key press|i}} and {{key press|k}} keys. | The moving pipper uses an accelerometer, a gyro, and other inputs to attempt to accurately display where unguided armament is going. Most of the switches on the gunsight affect it in some way. The pipper is also affected by the throttle drum, which in-sim is moved with the {{key press|i}} and {{key press|k}} keys. | ||
The pipper is turned on with a switch on the right side of the gunsight, and the brightness is changed by the knob above it. | The pipper is turned on with a switch on the lower right side of the gunsight, and the brightness is changed by the knob directly above it. | ||
The pipper's gyro can be disabled by turning the GYRO/ | The pipper's gyro can be disabled by turning the GYRO/MISS switch to MISS. The pipper will be more stable, but less accurate. The pipper can be damped by pressing down the lock key. | ||
The pipper has three major "modes" of operation: automatic, manual, and 300m mode. | The pipper has three major "modes" of operation: automatic, manual, and 300m mode. |
Revision as of 09:12, 21 September 2019
This page is about weapons management for the MiG-21bis.
Gunsight
The gun sight displays a static non-moveable fixed net and a moveable pipper onto the head-up-display.
The Fixed Net
The fixed net is turned on using a switch on the bottom of the gunsight, and it's brightness can be adjusted using the knob on the bottom left of the gunsight.
The Pipper
The moving pipper uses an accelerometer, a gyro, and other inputs to attempt to accurately display where unguided armament is going. Most of the switches on the gunsight affect it in some way. The pipper is also affected by the throttle drum, which in-sim is moved with the i and k keys.
The pipper is turned on with a switch on the lower right side of the gunsight, and the brightness is changed by the knob directly above it.
The pipper's gyro can be disabled by turning the GYRO/MISS switch to MISS. The pipper will be more stable, but less accurate. The pipper can be damped by pressing down the lock key.
The pipper has three major "modes" of operation: automatic, manual, and 300m mode.
300m mode
300m mode is entered by rotating the throttle drum with the k button all the way to the rear. In this mode, the target distance is assumed to always be 300m, and the angle will be automatically set for the gun. Rotate the span knob to set the desired target wingspan width in meters.
Auto mode
Automatic mode is entered into by not being in 300m mode, and by flipping the AUTO/MAN switch to MAN.
Span still must be set manually.
Distance is taken from either a radar lock, the slant-radar range (if the radar is locked in the forward position), or if neither is present, the distance is assumed to be 600m.
The pipper correction angle is set automatically via the position of the GUN/LAUNCH and SHOOT/BOMB switches. If SHOOT/BOMB is set to BOMB, the pipper attempts to help with bomb releases (this is not CCIP or CCRP, and is not accurate). If SHOOT/BOMB is set to SHOOT, and GUN/LAUNCH is set to GUN, the pipper angle will adjust to the correct angle for the GSh-23. If it is set to LAUNCH, it will adjust the angle depending on which armament position is selected on the weapons panel (S-5, S-24, or missiles).
Manual Mode
In manual mode, the span and angle must be entered manually. When the target is within visual range, use the i and k keys to move the pipper diamonds so they surround the target. Range to the target will be estimated based on the wingspan and pipper diameter. Note that while in manual mode, the locking bars on the radar cannot be moved.
Customise Colour of Gun Sight
The gun sight has fully customizable colours via the FlightGear dropdown menu MiG-21 -> Gunsight
.
Weapons
Payload Information
Name | Type | Guidance | Range | Speed | Additional Info | Wikipedia article |
---|---|---|---|---|---|---|
R-3S | Missile | Infrared | 8 km | Mach 2.5 | Russia-cloned AIM-9 | link |
R-3R | Missile | Semi-Active Radar | 8 km | Mach 2.5 | Russia-cloned AIM-9 | link |
R-60 | Missile | Infrared | 8 km | Mach 2.7 | link | |
R-27R1 | Missile | Active Radar | 73 km | Mach 4.5 | Later variants only | link |
R-27T1 | Missile | Infrared | 63 km | Mach 4.5 | Later variants only | link |
Kh-66 | Missile | Beam Rider | 10 km | 2700 km/h | link | |
Kh-25MP | Missile | Anti Radiation | 42 km | 1620 km/h | link | |
UB-16 | Rocket Pod | N/A | Fires S-5 rockets | |||
UB-32 | Rocket Pod | N/A | Fires S-5 rockets | link | ||
S-5 | Rocket | Unguided | 5 km | 300 m/s | Fired from UB-16/32 | link |
S-24 | Rocket | Unguided | link | |||
FAB-100 | A/G | Unguided | Free fall bomb | |||
FAB-250 | A/G | Unguided | Free fall bomb | |||
FAB-500 | A/G | Unguided | Free fall bomb |
Weapons Loading
Load and re-load of weapons can be done on the ground. Most weapons are changed using the drop-down menu Equipment -> Fuel and Payload
.
Flares/chaff can be added to the left and right fuselage attachment points (Conformal CM
). They can be reloaded using drop-down menu MiG-21 -> Reload Flares/Chaff
.
The gun is loaded on start-up of the simulation. Re-loading is currently only possible by re-starting FlightGear.
Rockets
There is a ripple setting for launching rockets. However, please be aware that if the button / keyboard control is only pressed shortly, then only one rocket is released no matter the ripple setting. Therefore: hold down the button the whole time.
Rocket aiming is a lot like gun aiming - and they basically act like bullets (due to limits in the current implementation).
Missiles
KH-66
The KH-66 requires the radar in beam mode and the weapon selector to the appropriate S-24 position.
Flares / Chaff
The current CM “pods” are Yugoslavian in origin, and there isn't much info online about them. The implementation assumes the front 9 holes were for chaff, and the rear 20 were for flares.
Radar Warning Receiver (RWR)
Each of the four light bulbs represents one of the four sensors, not the system as a whole.
The RWR can be toggled between Day (yellow lights) and Night (red lights) by pressing on the gauge - but not in the middle, as that is the test button).
Depending on the relative position of the other aircraft, more than one light bulb might be on, as the aspect ranges of the sensors overlap each other. If there is more than one aircraft in range, then the blinking of the light bulbs might get infrequent /not constant rhythm, as each aircraft's radar scan passes over the sensors.
In the real aircraft the blink rate is based on aircraft, scan pattern, and distance. However, that has not yet been implemented.