# Airbus A3XX FBW/Flight Control Computer System # Joshua Davidson (Octal450) # Copyright (c) 2020 Josh Davidson (Octal450) var mmoIAS = 0; var cas = 0; var elac1 = 0; var elac2 = 0; var sec1 = 0; var sec2 = 0; var sec3 = 0; var fac1 = 0; var fac2 = 0; var blue = 0; var green = 0; var yellow = 0; var ail = 0; var roll = 0; var rollback = 0; var law = 0; var lawyaw = 0; var FBW = { apOff: 0, degradeLaw: props.globals.getNode("/it-fbw/degrade-law"), degradeYawLaw: props.globals.getNode("/it-fbw/degrade-yaw-law"), activeLaw: props.globals.getNode("/it-fbw/law"), activeYawLaw: props.globals.getNode("/it-fbw/yaw-law"), override: props.globals.getNode("/it-fbw/override"), rollBack: props.globals.getNode("/it-fbw/roll-back"), rollLim: props.globals.getNode("/it-fbw/roll-lim"), yawdamper: props.globals.getNode("/systems/fctl/yawdamper-active"), Computers: { elac1: props.globals.getNode("/systems/fctl/elac1"), elac2: props.globals.getNode("/systems/fctl/elac2"), sec1: props.globals.getNode("/systems/fctl/sec1"), sec2: props.globals.getNode("/systems/fctl/sec2"), sec3: props.globals.getNode("/systems/fctl/sec3"), fac1: props.globals.getNode("/systems/fctl/fac1-healthy-signal"), fac2: props.globals.getNode("/systems/fctl/fac2-healthy-signal"), }, Failures: { elac1: props.globals.getNode("/systems/failures/fctl/elac1"), elac2: props.globals.getNode("/systems/failures/fctl/elac2"), sec1: props.globals.getNode("/systems/failures/fctl/sec1"), sec2: props.globals.getNode("/systems/failures/fctl/sec2"), sec3: props.globals.getNode("/systems/failures/fctl/sec3"), fac1: props.globals.getNode("/systems/failures/fctl/fac1"), fac2: props.globals.getNode("/systems/failures/fctl/fac2"), spoilerl1: props.globals.getNode("/systems/failures/spoilers/spoiler-l1"), spoilerl2: props.globals.getNode("/systems/failures/spoilers/spoiler-l2"), spoilerl3: props.globals.getNode("/systems/failures/spoilers/spoiler-l3"), spoilerl4: props.globals.getNode("/systems/failures/spoilers/spoiler-l4"), spoilerl5: props.globals.getNode("/systems/failures/spoilers/spoiler-l5"), spoilerr1: props.globals.getNode("/systems/failures/spoilers/spoiler-r1"), spoilerr2: props.globals.getNode("/systems/failures/spoilers/spoiler-r2"), spoilerr3: props.globals.getNode("/systems/failures/spoilers/spoiler-r3"), spoilerr4: props.globals.getNode("/systems/failures/spoilers/spoiler-r4"), spoilerr5: props.globals.getNode("/systems/failures/spoilers/spoiler-r5"), yawDamper1: props.globals.getNode("/systems/failures/fctl/yaw-damper-1"), yawDamper2: props.globals.getNode("/systems/failures/fctl/yaw-damper-2"), }, Lights: { elac1: props.globals.getNode("/systems/fctl/lights/elac1-fault"), elac2: props.globals.getNode("/systems/fctl/lights/elac2-fault"), sec1: props.globals.getNode("/systems/fctl/lights/sec1-fault"), sec2: props.globals.getNode("/systems/fctl/lights/sec2-fault"), sec2: props.globals.getNode("/systems/fctl/lights/sec3-fault"), fac1: props.globals.getNode("/systems/fctl/lights/fac1-fault"), fac2: props.globals.getNode("/systems/fctl/lights/fac2-fault"), }, Protections: { overspeedRoll: props.globals.getNode("/it-fbw/protections/overspeed-roll-back"), overspeed: props.globals.getNode("/it-fbw/protections/overspeed"), }, Switches: { elac1Sw: props.globals.getNode("/controls/fctl/switches/elac1"), elac2Sw: props.globals.getNode("/controls/fctl/switches/elac2"), sec1Sw: props.globals.getNode("/controls/fctl/switches/sec1"), sec2Sw: props.globals.getNode("/controls/fctl/switches/sec2"), sec3Sw: props.globals.getNode("/controls/fctl/switches/sec3"), fac1Sw: props.globals.getNode("/controls/fctl/switches/fac1"), fac2Sw: props.globals.getNode("/controls/fctl/switches/fac2"), }, init: func() { if (updatet.isRunning) { updatet.stop(); } if (fbwt.isRunning) { fbwt.stop(); } me.resetFail(); me.Switches.elac1Sw.setBoolValue(1); me.Switches.elac2Sw.setBoolValue(1); me.Switches.sec1Sw.setBoolValue(1); me.Switches.sec2Sw.setBoolValue(1); me.Switches.sec3Sw.setBoolValue(1); me.Switches.fac1Sw.setBoolValue(1); me.Switches.fac2Sw.setBoolValue(1); me.Computers.elac1.setBoolValue(0); me.Computers.elac2.setBoolValue(0); me.Computers.sec1.setBoolValue(0); me.Computers.sec2.setBoolValue(0); me.Computers.sec3.setBoolValue(0); me.Computers.fac1.setBoolValue(0); me.Computers.fac2.setBoolValue(0); me.degradeLaw.setValue(0); me.activeLaw.setValue(0); me.override.setValue(0); me.apOff = 0; if (!updatet.isRunning) { updatet.start(); } if (!fbwt.isRunning) { fbwt.start(); } }, resetFail: func() { me.Failures.elac1.setBoolValue(0); me.Failures.elac2.setBoolValue(0); me.Failures.sec1.setBoolValue(0); me.Failures.sec2.setBoolValue(0); me.Failures.sec3.setBoolValue(0); me.Failures.fac1.setBoolValue(0); me.Failures.fac2.setBoolValue(0); me.Failures.spoilerl1.setBoolValue(0); me.Failures.spoilerl2.setBoolValue(0); me.Failures.spoilerl3.setBoolValue(0); me.Failures.spoilerl4.setBoolValue(0); me.Failures.spoilerl5.setBoolValue(0); me.Failures.spoilerr1.setBoolValue(0); me.Failures.spoilerr2.setBoolValue(0); me.Failures.spoilerr3.setBoolValue(0); me.Failures.spoilerr4.setBoolValue(0); me.Failures.spoilerr5.setBoolValue(0); me.Failures.yawDamper1.setBoolValue(0); me.Failures.yawDamper2.setBoolValue(0); }, }; var update_loop = func { elac1 = FBW.Computers.elac1.getBoolValue(); elac2 = FBW.Computers.elac2.getBoolValue(); sec1 = FBW.Computers.sec1.getBoolValue(); sec2 = FBW.Computers.sec2.getBoolValue(); sec3 = FBW.Computers.sec3.getBoolValue(); fac1 = FBW.Computers.fac1.getBoolValue(); fac2 = FBW.Computers.fac2.getBoolValue(); law = FBW.activeLaw.getValue(); lawyaw = FBW.activeYawLaw.getValue(); # Degrade logic, all failures which degrade FBW need to go here. -JD blue = systems.HYD.Psi.blue.getValue(); green = systems.HYD.Psi.green.getValue(); yellow = systems.HYD.Psi.yellow.getValue(); if (!pts.Gear.wow[1].getBoolValue() and !pts.Gear.wow[2].getBoolValue()) { if (!elac1 and !elac2) { if (lawyaw == 0) { FBW.degradeYawLaw.setValue(1); } if (law == 0) { FBW.degradeLaw.setValue(1); FBW.apOff = 1; } } if ((!elac1 and elac2 and ((green < 1500 and yellow >= 1500) or (green >= 1500 and yellow < 1500))) or (!elac2 and elac1 and blue < 1500)) { if (lawyaw == 0) { FBW.degradeYawLaw.setValue(1); } if (law == 0) { FBW.degradeLaw.setValue(1); FBW.apOff = 1; } } if (!sec1 and !sec2 and !sec3) { if (lawyaw == 0) { FBW.degradeYawLaw.setValue(1); } if (law == 0) { FBW.degradeLaw.setValue(1); } } if (systems.ELEC.EmerElec.getBoolValue()) { if (lawyaw == 0 or lawyaw == 1) { } elsif (fac1 and lawyaw == 2) { FBW.degradeYawLaw.setValue(1); } if (law == 0) { FBW.degradeLaw.setValue(1); FBW.apOff = 1; } } if (blue < 1500 and green < 1500 and yellow >= 1500) { if (lawyaw == 0) { FBW.degradeYawLaw.setValue(1); } if (law == 0) { FBW.degradeLaw.setValue(1); FBW.apOff = 1; } } if ((!fac1 and !fac2) or !FBW.yawdamper.getValue() or (blue >= 1500 and green < 1500 and yellow < 1500)) { if (lawyaw == 0 or lawyaw == 1) { FBW.degradeYawLaw.setValue(2); } if (law == 0) { FBW.degradeLaw.setValue(1); FBW.apOff = 1; } } if (!elac1 and !elac2 and !sec1 and !sec2 and !sec3 and !fac1 and !fac2) { FBW.degradeLaw.setValue(3); FBW.apOff = 1; } } if (pts.Controls.Gear.gearDown.getBoolValue() and !fmgc.Input.ap1.getBoolValue() and !fmgc.Input.ap2.getBoolValue()) { if (law == 1) { FBW.degradeLaw.setValue(2); } } # degrade loop runs faster; reset this variable law = FBW.activeLaw.getValue(); # Mech Backup can always return to direct, if it can. if (law == 3 and systems.ELEC.Bus.acEss.getValue() >= 110 and (green >= 1500 or blue >= 1500 or yellow >= 1500)) { FBW.degradeLaw.setValue(2); } cas = pts.Instrumentation.AirspeedIndicator.indicatedSpdKt.getValue(); mmoIAS = (cas / pts.Instrumentation.AirspeedIndicator.indicatedMach.getValue()) * 0.82; if (mmoIAS < 350) { fmgc.FMGCInternal.vmo_mmo = mmoIAS; } else { fmgc.FMGCInternal.vmo_mmo = 350; } if (cas > (fmgc.FMGCInternal.vmo_mmo + 6) and (law == 0 or law == 1)) { if (fmgc.Input.ap1.getBoolValue() or fmgc.Input.ap2.getBoolValue()) { fcu.apOff("hard", 0); } if (!FBW.Protections.overspeed.getBoolValue()) { FBW.Protections.overspeed.setBoolValue(1); } } else { if (FBW.Protections.overspeed.getBoolValue()) { FBW.Protections.overspeed.setBoolValue(0); } } } var fbw_loop = func { ail = pts.Controls.Flight.aileron.getValue(); roll = pts.Orientation.roll.getValue(); rollback = FBW.rollBack.getValue(); if (ail > 0.4 and roll >= -33.5) { FBW.rollLim.setValue("67"); if (rollback == 1 and roll <= 33.5 and roll >= -33.5) { FBW.rollBack.setValue(0); } elsif (rollback == 0 and (roll > 33.5 or roll < -33.5)) { FBW.rollBack.setValue(1); } } else if (ail < -0.4 and roll <= 33.5) { FBW.rollLim.setValue("67"); if (rollback == 1 and roll <= 33.5 and roll >= -33.5) { FBW.rollBack.setValue(0); } elsif (rollback == 0 and (roll > 33.5 or roll < -33.5)) { FBW.rollBack.setValue(1); } } else if (ail < 0.04 and ail > -0.04) { FBW.rollLim.setValue("33"); if (rollback == 1 and roll <= 33.5 and roll >= -33.5) { FBW.rollBack.setValue(0); } } if (ail > 0.04 or ail < -0.04) { FBW.Protections.overspeedRoll.setValue(0); } else if (ail < 0.04 and ail > -0.04) { FBW.Protections.overspeedRoll.setValue(1); } if (!FBW.override.getBoolValue()) { var active = FBW.activeLaw.getValue(); var degrade = FBW.degradeLaw.getValue(); if (degrade == 0) { if (active != 0) { FBW.activeLaw.setValue(0); } } else if (degrade == 1) { if (active != 1) { FBW.activeLaw.setValue(1); } } else if (degrade == 2) { if (active != 2) { FBW.activeLaw.setValue(2); } } else if (degrade == 3) { if (active != 3) { FBW.activeLaw.setValue(3); } } active = FBW.activeYawLaw.getValue(); degrade = FBW.degradeYawLaw.getValue(); if (degrade == 0) { if (active != 0) { FBW.activeYawLaw.setValue(0); } } else if (degrade == 1) { if (active != 1) { FBW.activeYawLaw.setValue(1); } } else if (degrade == 2) { if (active != 2) { FBW.activeYawLaw.setValue(2); } } } if (FBW.apOff) { if (fmgc.Input.ap1.getBoolValue() or fmgc.Input.ap2.getBoolValue()) { fcu.apOff("hard", 0); fcu.athrOff("hard"); } } } setlistener("systems/fctl/sec1", func() { if (FBW.Computers.sec1.getBoolValue()) { FBW.Failures.spoilerl3.setBoolValue(0); FBW.Failures.spoilerr3.setBoolValue(0); FBW.Failures.spoilerl4.setBoolValue(0); FBW.Failures.spoilerr4.setBoolValue(0); } else { FBW.Failures.spoilerl3.setBoolValue(1); FBW.Failures.spoilerr3.setBoolValue(1); FBW.Failures.spoilerl4.setBoolValue(1); FBW.Failures.spoilerr4.setBoolValue(1); } }, 0, 0); setlistener("systems/fctl/sec2", func() { if (FBW.Computers.sec2.getBoolValue()) { FBW.Failures.spoilerl5.setBoolValue(0); FBW.Failures.spoilerr5.setBoolValue(0); } else { FBW.Failures.spoilerl5.setBoolValue(1); FBW.Failures.spoilerr5.setBoolValue(1); } }, 0, 0); setlistener("systems/fctl/sec3", func() { if (FBW.Computers.sec3.getBoolValue()) { FBW.Failures.spoilerl1.setBoolValue(0); FBW.Failures.spoilerr1.setBoolValue(0); FBW.Failures.spoilerl2.setBoolValue(0); FBW.Failures.spoilerr2.setBoolValue(0); } else { FBW.Failures.spoilerl1.setBoolValue(1); FBW.Failures.spoilerr1.setBoolValue(1); FBW.Failures.spoilerl2.setBoolValue(1); FBW.Failures.spoilerr2.setBoolValue(1); } }, 0, 0); var updatet = maketimer(0.1, update_loop); var fbwt = maketimer(0.03, fbw_loop);