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Make the FMGC respect speed constraints in flightplan (while still meeting speed limit)

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Also fix bug with incorrect groundspeed node, and prevent an error in
replay mode
This commit is contained in:
Jonathan Redpath 2022-07-03 18:40:49 +01:00
parent 5870ddbae1
commit 04177e434c
3 changed files with 33 additions and 11 deletions
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32
Nasal/FMGC/FMGC.nas
View file

@ -970,36 +970,58 @@ var ManagedSPD = maketimer(0.25, func {
FMGCInternal.machSwitchover = 0;
}
var waypoint = flightPlanController.flightplans[2].getWP(FPLN.currentWP.getValue());
var constraintSpeed = nil;
if (waypoint != nil) {
constraintSpeed = flightPlanController.flightplans[2].getWP(FPLN.currentWP.getValue()).speed_cstr;
}
if ((Modes.PFD.FMA.pitchMode == " " or Modes.PFD.FMA.pitchMode == "SRS") and (FMGCInternal.phase == 0 or FMGCInternal.phase == 1)) {
FMGCInternal.mngKtsMach = 0;
FMGCInternal.mngSpdCmd = srsSPD;
} elsif ((FMGCInternal.phase == 2 or FMGCInternal.phase == 3) and altitude <= FMGCInternal.clbSpdLimAlt) {
# Speed is maximum of greendot / climb speed limit
FMGCInternal.mngKtsMach = 0;
if (constraintSpeed != nil and constraintSpeed != 0) {
FMGCInternal.mngSpdCmd = FMGCInternal.decel ? FMGCInternal.minspeed : math.clamp(math.min(FMGCInternal.clbSpdLim, constraintSpeed), FMGCInternal.clean, 999);
} else {
FMGCInternal.mngSpdCmd = FMGCInternal.decel ? FMGCInternal.minspeed : math.clamp(FMGCInternal.clbSpdLim, FMGCInternal.clean, 999);
}
} elsif ((FMGCInternal.phase == 2 or FMGCInternal.phase == 3) and altitude > (FMGCInternal.clbSpdLimAlt + 20)) {
FMGCInternal.mngKtsMach = FMGCInternal.machSwitchover ? 1 : 0;
FMGCInternal.mngSpdCmd = FMGCInternal.machSwitchover ? mng_alt_mach : mng_alt_spd;
FMGCInternal.mngSpdCmd = FMGCInternal.machSwitchover ? math.min(mng_alt_mach, ktsToMach(constraintSpeed)) : math.min(mng_alt_spd, constraintSpeed);
} elsif ((FMGCInternal.phase >= 4 and FMGCInternal.phase <= 6) and altitude > (FMGCInternal.desSpdLimAlt + 20)) {
if (FMGCInternal.decel) {
FMGCInternal.mngKtsMach = 0;
FMGCInternal.mngSpdCmd = FMGCInternal.minspeed;
} else {
FMGCInternal.mngKtsMach = FMGCInternal.machSwitchover ? 1 : 0;
if (constraintSpeed != nil and constraintSpeed != 0) {
FMGCInternal.mngSpdCmd = FMGCInternal.machSwitchover ? math.min(mng_alt_mach, ktsToMach(constraintSpeed)) : math.min(mng_alt_spd, constraintSpeed);
} else {
FMGCInternal.mngSpdCmd = FMGCInternal.machSwitchover ? mng_alt_mach : mng_alt_spd;
}
}
} elsif ((FMGCInternal.phase >= 4 and FMGCInternal.phase <= 6) and altitude <= FMGCInternal.desSpdLimAlt) {
FMGCInternal.mngKtsMach = 0;
# Speed is maximum of greendot / descent speed limit
FMGCInternal.mngKtsMach = 0;
if (constraintSpeed != nil and constraintSpeed != 0) {
FMGCInternal.mngSpdCmd = FMGCInternal.decel ? FMGCInternal.minspeed : math.clamp(math.min(FMGCInternal.desSpdLim, constraintSpeed), FMGCInternal.clean, 999);
} else {
FMGCInternal.mngSpdCmd = FMGCInternal.decel ? FMGCInternal.minspeed : math.clamp(FMGCInternal.desSpdLim, FMGCInternal.clean, 999);
}
}
# Clamp to vls, maxspeed
# Clamp to maneouvering speed of current configuration and maxspeed
# Use minspeed node rather than variable, because we don't want to take GS MINI into account
if (FMGCInternal.phase >= 2) {
if (!FMGCInternal.mngKtsMach) {
FMGCInternal.mngSpd = math.clamp(FMGCInternal.mngSpdCmd, FMGCInternal.vls, FMGCInternal.maxspeed);
FMGCInternal.mngSpd = math.clamp(FMGCInternal.mngSpdCmd, FMGCNodes.minspeed.getValue(), FMGCInternal.maxspeed);
} else {
FMGCInternal.mngSpd = math.clamp(FMGCInternal.mngSpdCmd, ktToMach(FMGCInternal.vls), ktToMach(FMGCInternal.maxspeed));
FMGCInternal.mngSpd = math.clamp(FMGCInternal.mngSpdCmd, ktToMach(FMGCNodes.minspeed.getValue()), ktToMach(FMGCInternal.maxspeed));
}
} else {
FMGCInternal.mngSpd = FMGCInternal.mngSpdCmd;

2
Nasal/FMGC/flightplan-delegates.nas
View file

@ -193,7 +193,7 @@ var A320GPSDelegate = {
_landingCheckTimeout: func
{
if (pts.Gear.wow[0].getValue() and pts.Velocities.groundspeed.getValue() < 25) {
if (pts.Gear.wow[0].getValue() and pts.Velocities.groundspeedKt.getValue() < 25) {
logprint(LOG_INFO, 'GPS saw speed < 25kts on destination runway, end of route.');
me.landingCheck.stop();
# record touch-down time?

2
Nasal/FMGC/flightplan.nas
View file

@ -778,7 +778,7 @@ var flightPlanController = {
calculateLvlOffPoint: func(deltaAltitude) {
me.distLvl = (deltaAltitude * pts.Velocities.groundspeedKt.getValue()) / (fmgc.Internal.vs.getValue() * 60);
if (fmgc.Output.lat.getValue() == 1 and me.distLvl >= 0) { # NAV
if (me.active.getBoolValue() and fmgc.Output.lat.getValue() == 1 and me.distLvl >= 0) { # NAV
me.lvlOffPoint = me.flightplans[2].pathGeod(me.currentToWptIndex.getValue() - 1, me.flightplans[2].getWP(me.currentToWptIndex.getValue()).leg_distance - me.distToWpt.getValue() + me.distLvl);
} elsif (fmgc.Output.lat.getValue() == 0 and me.distLvl >= 0) { # HDG TRK
var coord = geo.aircraft_position();