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Merge pull request #232 from 747-4EVER/More-VNAV
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VNAV Speed Control
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@747-4EVER
747-4EVER authored Jun 26, 2021
2 parents a58c083 + b298a55 commit 248033f
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Showing 7 changed files with 599 additions and 103 deletions.
2 changes: 1 addition & 1 deletion salty-747/SimObjects/Airplanes/Asobo_B747_8i/flight_model.cfg
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Original file line number Diff line number Diff line change
Expand Up @@ -475,7 +475,7 @@ stall_coef_at_min_weight = 0.72
full_flaps_stall_speed = 130 ; Knots True (KTAS)
flaps_up_stall_speed = 205 ; Knots True (KTAS)
cruise_speed = 493 ; Knots True (KTAS)
cruise_mach = 0.845
cruise_mach = 0.90
crossover_speed = 310 ; Knots Indicated (KIAS)
max_mach = 0.92
max_indicated_speed = 450 ; Red line (KIAS)
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3 changes: 3 additions & 0 deletions salty-747/html_ui/Pages/VCockpit/Instruments/Airliners/B747_8/FMC/B747_8_FMC.css
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Original file line number Diff line number Diff line change
Expand Up @@ -63,6 +63,9 @@ fmc-b747-8-main-display {
.inop {
color: #666666; }

.magenta {
color: #FF00FF; }

fmc-b747-8-main-display::before {
content: " ";
display: block;
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243 changes: 200 additions & 43 deletions salty-747/html_ui/Pages/VCockpit/Instruments/Airliners/B747_8/FMC/B747_8_FMC_MainDisplay.js
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Original file line number Diff line number Diff line change
Expand Up @@ -155,14 +155,14 @@ class B747_8_FMC_MainDisplay extends Boeing_FMC {
this.maxCruiseFL = 430;
this.saltyBase = new SaltyBase();
this.saltyBase.init();
this.setEconClimbSpeed();
if (SaltyDataStore.get("OPTIONS_UNITS", "KG") == "KG") {
this.units = true;
this.useLbs = false;
} else if (SaltyDataStore.get("OPTIONS_UNITS", "KG") == "LBS") {
this.units = false;
this.useLbs = true;
}
this.updateVREF30();
this.onInit = () => {
B747_8_FMC_InitRefIndexPage.ShowPage1(this);
};
Expand All @@ -179,7 +179,17 @@ class B747_8_FMC_MainDisplay extends Boeing_FMC {
B747_8_FMC_NavRadioPage.ShowPage(this);
};
this.onVNAV = () => {
B747_8_FMC_VNAVPage.ShowPage1(this);
if (Simplane.getCurrentFlightPhase() <= FlightPhase.FLIGHT_PHASE_CLIMB) {
B747_8_FMC_VNAVPage.ShowPage1(this);
}
else if (Simplane.getCurrentFlightPhase() === FlightPhase.FLIGHT_PHASE_CRUISE) {
B747_8_FMC_VNAVPage.ShowPage2(this);
this.flightPhaseHasChangedToCruise === false;
}
else {
B747_8_FMC_VNAVPage.ShowPage3(this);
this.flightPhaseHasChangedToDescent === false;
}
};
this.onProg = () => {
B747_8_FMC_ProgPage.ShowPage1(this);
Expand Down Expand Up @@ -215,7 +225,6 @@ class B747_8_FMC_MainDisplay extends Boeing_FMC {
this.updateVREF30();
this.timer = 0;
}
this.timer ++;
this.saltyBase.update(this.isElectricityAvailable());
if (SaltyDataStore.get("OPTIONS_UNITS", "KG") == "KG") {
this.units = true;
Expand All @@ -224,6 +233,7 @@ class B747_8_FMC_MainDisplay extends Boeing_FMC {
this.units = false;
this.useLbs = true;
}
this.timer ++;
}
onInputAircraftSpecific(input) {
console.log("B747_8_FMC_MainDisplay.onInputAircraftSpecific input = '" + input + "'");
Expand Down Expand Up @@ -417,8 +427,22 @@ class B747_8_FMC_MainDisplay extends Boeing_FMC {
let dWeight = (this.getWeight(true) - 500) / (900 - 500);
return 204 + 40 * dWeight;
}


/* Sets VNAV CLB or DES speed restriction and altitude */
setSpeedRestriction(_speed, _altitude, _isDescent) {
if (!_isDescent) {
SimVar.SetSimVarValue("L:SALTY_SPEED_RESTRICTION", "knots", _speed);
SimVar.SetSimVarValue("L:SALTY_SPEED_RESTRICTION_ALT", "feet", _altitude);
}
else {
SimVar.SetSimVarValue("L:SALTY_SPEED_RESTRICTION_DES", "knots", _speed);
SimVar.SetSimVarValue("L:SALTY_SPEED_RESTRICTION_DES_ALT", "feet", _altitude);
}
}

//VNAV climb speed commands 5 knots below current flap placard speed
getClbManagedSpeed() {
getClbManagedSpeed(_cduPageEconRequest) {
let flapsHandleIndex = Simplane.getFlapsHandleIndex();
let flapLimitSpeed = Simplane.getFlapsLimitSpeed(this.aircraft, flapsHandleIndex);
let alt = Simplane.getAltitude();
Expand All @@ -427,61 +451,175 @@ class B747_8_FMC_MainDisplay extends Boeing_FMC {
let flapsUPmanueverSpeed = SimVar.GetSimVarValue("L:SALTY_VREF30", "knots") + 80;
let speedRestr = SimVar.GetSimVarValue("L:SALTY_SPEED_RESTRICTION", "knots");
let speedRestrAlt = SimVar.GetSimVarValue("L:SALTY_SPEED_RESTRICTION_ALT", "feet");
let clbMode = SimVar.GetSimVarValue("L:SALTY_VNAV_CLB_MODE", "Enum");
let mach = this.getCrzMach();
let machCross = SimVar.GetGameVarValue("FROM MACH TO KIAS", "number", mach);
let machMode = Simplane.getAutoPilotMachModeActive();
let isSpeedIntervention = SimVar.GetSimVarValue("L:AP_SPEED_INTERVENTION_ACTIVE", "number");
//When flaps 1 - commands UP + 20 or speed transition, whichever higher
if (flapsHandleIndex <= 1 && alt <= speedTrans) {
speed = Math.max(flapsUPmanueverSpeed + 20, 250);
}
//Above 10000 commands lowest of UP + 100, 350kts or M.845
let mach = 0.845;
let machlimit = SimVar.GetGameVarValue("FROM MACH TO KIAS", "number", mach);
if (flapsHandleIndex <= 1 && alt >= speedTrans) {
speed = SimVar.GetSimVarValue("L:SALTY_ECON_CLB_SPEED", "knots");
//ECON SPEED Above 10000 commands lowest of UP + 100, 355kts or Cruise Mach
if ((flapsHandleIndex <= 1 && alt > speedTrans) || _cduPageEconRequest) {
speed = Math.min(flapsUPmanueverSpeed + 100, 355, machCross);
if (_cduPageEconRequest) {
return speed;
}
if (speed < machCross && machMode && !isSpeedIntervention) {
this.managedMachOff();
}
}
if (speed == machlimit) {
SimVar.SetSimVarValue("L:XMLVAR_AirSpeedIsInMach", "bool", 1);
if (clbMode == 2) {
speed = SimVar.GetSimVarValue("L:SALTY_VNAV_CLB_SPEED", "knots");
if (machMode && !isSpeedIntervention) {
this.managedMachOff();
}
return speed;
}
if (speed >= machCross) {
if (!machMode) {
this.managedMachOn();
}
}
if (alt < speedRestrAlt && speedRestrAlt !== 0) {
speed = Math.min(speed, speedRestr);
}
return speed;
}
setEconClimbSpeed() {
let flapsUPmanueverSpeed = SimVar.GetSimVarValue("L:SALTY_VREF30", "knots") + 80;
let mach = 0.845;

/* Returns VNAV cruise speed target in accordance with active VNAV mode */
getCrzManagedSpeed() {
let flapsUPmanueverSpeed = SimVar.GetSimVarValue("L:SALTY_VREF30", "knots") + 80;
let mach = this.getCrzMach();
let machlimit = SimVar.GetGameVarValue("FROM MACH TO KIAS", "number", mach);
let clbSpeed = Math.min(flapsUPmanueverSpeed + 100, 350, machlimit);
SimVar.SetSimVarValue("L:SALTY_ECON_CLB_SPEED", "knots", clbSpeed);
SimVar.SetSimVarValue("L:SALTY_VNAV_CLB_MODE" , "Enum", 0);
}
setSpeedRestriction(_speed, _altitude) {
SimVar.SetSimVarValue("L:SALTY_SPEED_RESTRICTION", "knots", _speed);
SimVar.SetSimVarValue("L:SALTY_SPEED_RESTRICTION_ALT", "feet", _altitude);
let machMode = Simplane.getAutoPilotMachModeActive();
let crzMode = SimVar.GetSimVarValue("L:SALTY_VNAV_CRZ_MODE", "Enum");
let speed = Math.min(flapsUPmanueverSpeed + 100, 350, machlimit);
let isSpeedIntervention = SimVar.GetSimVarValue("L:AP_SPEED_INTERVENTION_ACTIVE", "number");
if (crzMode == 0) {
if (speed >= machlimit && !machMode && !isSpeedIntervention) {
this.managedMachOn();
}
else if (speed < machlimit && machMode && !isSpeedIntervention) {
this.managedMachOff();
}
}
else if (crzMode == 3) {
speed = SimVar.GetSimVarValue("L:SALTY_CRZ_SPEED", "knots");
if (machMode && !isSpeedIntervention) {
this.managedMachOff();
}
}
else if (crzMode == 4) {
let mach = SimVar.GetSimVarValue("L:SALTY_CRZ_MACH", "mach");
speed = SimVar.GetGameVarValue("FROM MACH TO KIAS", "knots", mach);
if (!machMode && !isSpeedIntervention) {
this.managedMachOn();
}
}
if (this.cruiseFlightLevel < 100) {
speed = Math.max(flapsUPmanueverSpeed + 40, 250);
}
return speed;
}
getCrzManagedSpeed(highAltitude = false) {
//Commands lowest of UP + 100, 350kts or M.845.
let mach = 0.845

/* Returns VNAV descent speed target in accordance with active VNAV mode */
getDesManagedSpeed(_cduPageEconRequest) {
let flapsUPmanueverSpeed = SimVar.GetSimVarValue("L:SALTY_VREF30", "knots") + 80;
let mach = this.getCrzMach();
let machlimit = SimVar.GetGameVarValue("FROM MACH TO KIAS", "number", mach);
let altitude = Simplane.getAltitude();
let desMode = SimVar.GetSimVarValue("L:SALTY_VNAV_DES_MODE" , "Enum");
let machMode = Simplane.getAutoPilotMachModeActive();
let speed = Math.min(flapsUPmanueverSpeed + 100, 350, machlimit);
//UP + 20 or 250 below 10000
if (!highAltitude && Simplane.getAltitude() < 10000) {
speed = Math.max(flapsUPmanueverSpeed + 20, 250);
let isSpeedIntervention = SimVar.GetSimVarValue("L:AP_SPEED_INTERVENTION_ACTIVE", "number");
if (_cduPageEconRequest) {
speed = Math.min(flapsUPmanueverSpeed + 100, 350);
return speed;
}
if (altitude <= 10500) {
if (machMode && !isSpeedIntervention) {
this.managedMachOff();
}
return speed = 240;
}
if (desMode == 2) {
speed = SimVar.GetSimVarValue("L:SALTY_DES_SPEED", "knots");
if (machMode && !isSpeedIntervention) {
this.managedMachOff();
}
}
else if (desMode == 3) {
let mach = SimVar.GetSimVarValue("L:SALTY_ECON_DES_MACH", "mach");
speed = SimVar.GetGameVarValue("FROM MACH TO KIAS", "knots", mach);
}
if (desMode == 0) {
if (speed < machlimit && machMode && !isSpeedIntervention) {
this.managedMachOff();
}
else if (speed >= machlimit && !machMode && !isSpeedIntervention) {
this.managedMachOn();
}
}
return speed;
}
getDesManagedSpeed() {
//Commands lowest of 340kts or M.845 then 240 below 10000.
let mach = 0.845
let machlimit = SimVar.GetGameVarValue("FROM MACH TO KIAS", "number", mach);
let speed = Math.min(340, machlimit);
if (machlimit > 340) {
SimVar.SetSimVarValue("K:AP_MANAGED_SPEED_IN_MACH_OFF", "number", 1);
SimVar.SetSimVarValue("L:XMLVAR_AirSpeedIsInMach", "bool", 0);

/* Gets Cruise Mach number from altitude - Used regression from B744 data using weight correction factor needs B748 data to refine */
getCrzMach() {
let roundedFlightLevel = Math.ceil(this.cruiseFlightLevel / 10) * 10;
let weightCorrectionFactor = 0.887;
let grossWeight = this.getWeight(false) * weightCorrectionFactor * 1000;
let crzMach = 0.8;
const flightLeveltoGradient = {
250: 8.000e-7,
260: 7.880e-7,
270: 7.660e-7,
280: 7.460e-7,
290: 7.080e-7,
300: 6.560e-7,
310: 6.040e-7,
320: 5.420e-7,
330: 4.800e-7,
340: 4.414e-7,
350: 4.188e-7,
360: 3.676e-7,
370: 3.558e-7,
380: 3.375e-7,
390: 2.725e-7,
400: 2.975e-7,
410: 1.796e-7,
420: 1.172e-7,
430: 7.162e-8
};
const flightLeveltoIntercept = {
250: 0.5234,
260: 0.5368,
270: 0.5528,
280: 0.5678,
290: 0.5878,
300: 0.6114,
310: 0.6340,
320: 0.6594,
330: 0.6840,
340: 0.7023,
350: 0.7155,
360: 0.7357,
370: 0.7453,
380: 0.7566,
390: 0.7792,
400: 0.7776,
410: 0.8116,
420: 0.8300,
430: 0.8423
};
if (this.cruiseFlightLevel <= 240) {
crzMach = 1;
}
if (Simplane.getAltitude() < 10500) {
speed = Math.min(speed, 240);
else {
crzMach = grossWeight * flightLeveltoGradient[roundedFlightLevel] + flightLeveltoIntercept[roundedFlightLevel];
}
return speed;
return crzMach;
}
getVRef(flapsHandleIndex = NaN, useCurrentWeight = true) {
if (isNaN(flapsHandleIndex)) {
Expand Down Expand Up @@ -526,8 +664,25 @@ class B747_8_FMC_MainDisplay extends Boeing_FMC {
let cleanApproachSpeed = SimVar.GetSimVarValue("L:SALTY_VREF30", "knots") + 80;
return cleanApproachSpeed;
}

/* Turns off VNAV Mach speed mode */
managedMachOff() {
if (this.getIsVNAVActive()){
SimVar.SetSimVarValue("K:AP_MANAGED_SPEED_IN_MACH_OFF", "number", 1);
SimVar.SetSimVarValue("L:XMLVAR_AirSpeedIsInMach", "bool", 0);
}
}

/* Turns on VNAV Mach speed mode */
managedMachOn() {
if (this.getIsVNAVActive()){
SimVar.SetSimVarValue("K:AP_MANAGED_SPEED_IN_MACH_ON", "number", 1);
SimVar.SetSimVarValue("L:XMLVAR_AirSpeedIsInMach", "bool", 1);
}
}

/* Calculates VREF for Flap 25 using Polynomial regression derived from FCOM data */
updateVREF25() {
//Polynomial regression derived from FCOM published VREF25
let coefficients = [
-1.5467919598658073e+003,
1.5106421359771541e-002,
Expand All @@ -546,8 +701,9 @@ class B747_8_FMC_MainDisplay extends Boeing_FMC {
}
SimVar.SetSimVarValue("L:SALTY_VREF25", "knots", Math.round(vRef25));
}

/* Calculates VREF for Flap 30 using Polynomial regression derived from FCOM data */
updateVREF30() {
//Polynomial regression derived from FCOM published VREF30
let coefficients = [
-1.0271030433117912e+003,
1.0235086042112870e-002,
Expand Down Expand Up @@ -1116,6 +1272,7 @@ class B747_8_FMC_MainDisplay extends Boeing_FMC {
.replace(/{yellow}/g, "<span class='yellow'>")
.replace(/{green}/g, "<span class='green'>")
.replace(/{red}/g, "<span class='red'>")
.replace(/{magenta}/g, "<span class='magenta'>")
.replace(/{inop}/g, "<span class='inop'>")
.replace(/{small}/g, "<span class='s-text'>")
.replace(/{sp}/g, "&nbsp;")
Expand All @@ -1134,7 +1291,7 @@ class B747_8_FMC_MainDisplay extends Boeing_FMC {
color = "white";
}
this._title = content.split("[color]")[0];
this._titleElement.classList.remove("white", "blue", "yellow", "green", "red", "inop");
this._titleElement.classList.remove("white", "blue", "yellow", "green", "red", "inop", "magenta");
this._titleElement.classList.add(color);
this._titleElement.innerHTML = this._title;
}
Expand Down Expand Up @@ -1198,15 +1355,15 @@ class B747_8_FMC_MainDisplay extends Boeing_FMC {
col = 0;
}
if (label === "__FMCSEPARATOR") {
label = "------------------------";
label = "---------------------------";
}
if (label !== "") {
let color = label.split("[color]")[1];
if (!color) {
color = "white";
}
let e = this._labelElements[row][col];
e.classList.remove("white", "blue", "yellow", "green", "red", "inop");
e.classList.remove("white", "blue", "yellow", "green", "red", "inop", "magenta");
e.classList.add(color);
label = label.split("[color]")[0];
}
Expand Down
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