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David Culp: Heres are some tweaks to the FGSimTurbine module that smooth out the animation between engine phases, and between afterburner and non-afterburner operation.

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ehofman 2003-10-24 12:25:24 +00:00
parent 07b5a0fc8e
commit a793268be3
1 changed files with 12 additions and 9 deletions
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21
src/FDM/JSBSim/FGSimTurbine.cpp
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@ -123,13 +123,14 @@ double FGSimTurbine::Off(void)
{ {
double qbar = Translation->Getqbar(); double qbar = Translation->Getqbar();
Running = false; Running = false;
FuelFlow_pph = 0.0; FuelFlow_pph = Seek(&FuelFlow_pph, 0, 1000.0, 10000.0);
N1 = Seek(&N1, qbar/10.0, N1/2.0, N1/2.0); N1 = Seek(&N1, qbar/10.0, N1/2.0, N1/2.0);
N2 = Seek(&N2, qbar/15.0, N2/2.0, N2/2.0); N2 = Seek(&N2, qbar/15.0, N2/2.0, N2/2.0);
EGT_degC = Seek(&EGT_degC, TAT, 11.7, 7.3); EGT_degC = Seek(&EGT_degC, TAT, 11.7, 7.3);
OilTemp_degK = Seek(&OilTemp_degK, TAT + 273.0, 0.2, 0.2); OilTemp_degK = Seek(&OilTemp_degK, TAT + 273.0, 0.2, 0.2);
OilPressure_psi = N2 * 0.62; OilPressure_psi = N2 * 0.62;
EPR = 1.0; NozzlePosition = Seek(&NozzlePosition, 1.0, 0.8, 0.8);
EPR = Seek(&EPR, 1.0, 0.2, 0.2);
return 0.0; return 0.0;
} }
@ -150,13 +151,15 @@ double FGSimTurbine::Run(void)
N2norm = (N2 - IdleN2) / N2_factor; N2norm = (N2 - IdleN2) / N2_factor;
thrust = idlethrust + (milthrust * N2norm * N2norm); thrust = idlethrust + (milthrust * N2norm * N2norm);
thrust = thrust * (1.0 - BleedDemand); thrust = thrust * (1.0 - BleedDemand);
FuelFlow_pph = thrust * TSFC;
if (FuelFlow_pph < IdleFF) FuelFlow_pph = IdleFF;
EGT_degC = TAT + 363.1 + ThrottleCmd * 357.1; EGT_degC = TAT + 363.1 + ThrottleCmd * 357.1;
OilPressure_psi = N2 * 0.62; OilPressure_psi = N2 * 0.62;
OilTemp_degK = Seek(&OilTemp_degK, 366.0, 1.2, 0); OilTemp_degK = Seek(&OilTemp_degK, 366.0, 1.2, 0.1);
EPR = 1.0 + thrust/MilThrust; EPR = 1.0 + thrust/MilThrust;
NozzlePosition = Seek(&NozzlePosition, 1.0 - N2norm, 0.8, 0.8); if (!Augmentation) {
FuelFlow_pph = Seek(&FuelFlow_pph, thrust * TSFC, 1000.0, 100000);
if (FuelFlow_pph < IdleFF) FuelFlow_pph = IdleFF;
NozzlePosition = Seek(&NozzlePosition, 1.0 - N2norm, 0.8, 0.8);
}
if (Reversed) thrust = thrust * -0.2; if (Reversed) thrust = thrust * -0.2;
if (AugMethod == 1) { if (AugMethod == 1) {
@ -166,7 +169,7 @@ double FGSimTurbine::Run(void)
if ((Augmented == 1) && Augmentation) { if ((Augmented == 1) && Augmentation) {
thrust = MaxThrust * ThrustTables[2]->TotalValue(); thrust = MaxThrust * ThrustTables[2]->TotalValue();
FuelFlow_pph = thrust * ATSFC; FuelFlow_pph = Seek(&FuelFlow_pph, thrust * ATSFC, 5000.0, 10000.0);
NozzlePosition = Seek(&NozzlePosition, 1.0, 0.8, 0.8); NozzlePosition = Seek(&NozzlePosition, 1.0, 0.8, 0.8);
} }
@ -187,9 +190,9 @@ double FGSimTurbine::SpinUp(void)
FuelFlow_pph = 0.0; FuelFlow_pph = 0.0;
N2 = Seek(&N2, 25.18, 3.0, N2/2.0); N2 = Seek(&N2, 25.18, 3.0, N2/2.0);
N1 = Seek(&N1, 5.21, 1.0, N1/2.0); N1 = Seek(&N1, 5.21, 1.0, N1/2.0);
EGT_degC = TAT; EGT_degC = Seek(&EGT_degC, TAT, 11.7, 7.3);
OilPressure_psi = N2 * 0.62; OilPressure_psi = N2 * 0.62;
OilTemp_degK = TAT + 273.0; OilTemp_degK = Seek(&OilTemp_degK, TAT + 273.0, 0.2, 0.2);
EPR = 1.0; EPR = 1.0;
NozzlePosition = 1.0; NozzlePosition = 1.0;
return 0.0; return 0.0;