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Howto:Implement a Fly-By-Wire System for Airliners: Difference between revisions
Howto:Implement a Fly-By-Wire System for Airliners (view source)
Revision as of 18:18, 11 February 2012
, 11 February 2012→/Nasal/fbw.nas: use a separate method to check if power is on
m (→/Nasal/fbw.nas: use a separate update_ailerons() method) |
m (→/Nasal/fbw.nas: use a separate method to check if power is on) |
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| Line 134: | Line 134: | ||
## Position and Orientation | ## Position and Orientation | ||
me.altitudeagl = getprop("/position/altitude-agl-ft"); | |||
var altitudemsl = getprop("/position/altitude-ft"); | var altitudemsl = getprop("/position/altitude-ft"); | ||
| Line 169: | Line 169: | ||
## This is where the FBW actually does its job ;) | ## This is where the FBW actually does its job ;) | ||
me.check_if_active(); | |||
if (getprop("/controls/fbw/active")) { | if (getprop("/controls/fbw/active")) { | ||
| Line 219: | Line 207: | ||
} | } | ||
if ((airspeedkt >= 220) and (altitudeagl >= 3500)) { | if ((airspeedkt >= 220) and (me.altitudeagl >= 3500)) { | ||
setprop("/controls/fbw/autostable", 1); | setprop("/controls/fbw/autostable", 1); | ||
} else { | } else { | ||
| Line 300: | Line 288: | ||
### Adjust Throttle to keep from stalling | ### Adjust Throttle to keep from stalling | ||
if ((airspeedkt < 125) and (altitudeagl > 250) and (throttles[0] != 1) and (throttles[1] != 1)) { | if ((airspeedkt < 125) and (me.altitudeagl > 250) and (throttles[0] != 1) and (throttles[1] != 1)) { | ||
throttles[0] += 0.001 * me.fpsfix; | throttles[0] += 0.001 * me.fpsfix; | ||
throttles[1] += 0.001 * me.fpsfix; | throttles[1] += 0.001 * me.fpsfix; | ||
| Line 404: | Line 392: | ||
} | } | ||
}, | |||
check_if_active : func { | |||
### The Fly-by--wire only works when it is active. In the Boeing 787, pilots have the option to disable fly-by-wire and use power-by-wire* in case of emergencies. The Fly By Wire Configuration includes: On/Off, Bank Limit and Rudder Control. The FBW Configs can be set in the FBW CONFIG Page in the CDU(s) | |||
## Turn on Fly By Wire only if we have power | |||
if (getprop("/systems/electrical/outputs/efis") != nil) { | |||
if ((getprop("/systems/electrical/outputs/efis") < 9) and (me.altitudeagl >= 200)) { | |||
setprop("/controls/fbw/active", 0); | |||
if (me.disconnectannounce == 0) { | |||
screen.log.write("Fly By Wire Disconnected!", 1, 0, 0); | |||
me.disconnectannounce = 1; | |||
} | |||
} | |||
} | |||
}, | }, | ||
reset : func { | reset : func { | ||