private double Off()
{
double qbar = FDMExec.Auxiliary.Qbar;
running = false; EngStarting = false;
fuelFlow_pph = Seek(fuelFlow_pph, 0, 800.0, 800.0);
//allow the air turn with generator
N1 = ExpSeek(N1, qbar / 15.0, Idle_Max_Delay * 2.5, Idle_Max_Delay * 5);
OilTemp_degK = ExpSeek(OilTemp_degK, 273.15 + TAT, 400, 400);
Eng_Temperature = ExpSeek(Eng_Temperature, TAT, 300, 400);
double ITT_goal = ITT_N1.GetValue(N1, 0.1) + ((N1 > 20) ? 0.0 : (20 - N1) / 20.0 * Eng_Temperature);
Eng_ITT_degC = ExpSeek(Eng_ITT_degC, ITT_goal, ITT_Delay, ITT_Delay * 1.2);
OilPressure_psi = (N1 / 100.0 * 0.25 + (0.1 - (OilTemp_degK - 273.15) * 0.1 / 80.0) * N1 / 100.0) / 7692.0e-6; //from MPa to psi
ConsumeFuel(); // for possible setting Starved = false when fuel tank
// is refilled (fuel crossfeed etc.)
if (Prop_RPM > 5)
{
return(-0.012); // friction in engine when propeller spining (estimate)
}
return(0.0);
}
private double SpinUp()
{
double EngPower_HP;
running = false;
EngStarting = true;
fuelFlow_pph = 0.0;
if (!GeneratorPower)
{
EngStarting = false;
phase = phaseType.tpOff;
StartTime = -1;
return(0.0);
}
N1 = ExpSeek(N1, StarterN1, Idle_Max_Delay * 6, Idle_Max_Delay * 2.4);
Eng_Temperature = ExpSeek(Eng_Temperature, TAT, 300, 400);
double ITT_goal = ITT_N1.GetValue(N1, 0.1) + ((N1 > 20) ? 0.0 : (20 - N1) / 20.0 * Eng_Temperature);
Eng_ITT_degC = ExpSeek(Eng_ITT_degC, ITT_goal, ITT_Delay, ITT_Delay * 1.2);
OilTemp_degK = ExpSeek(OilTemp_degK, 273.15 + TAT, 400, 400);
OilPressure_psi = (N1 / 100.0 * 0.25 + (0.1 - (OilTemp_degK - 273.15) * 0.1 / 80.0) * N1 / 100.0) / 7692.0e-6; //from MPa to psi
NozzlePosition = 1.0;
EngPower_HP = EnginePowerRPM_N1.GetValue(Prop_RPM, N1);
EngPower_HP *= EnginePowerVC.GetValue();
if (EngPower_HP > MaxPower)
{
EngPower_HP = MaxPower;
}
if (StartTime >= 0)
{
StartTime += dt;
}
if (StartTime > MaxStartingTime && MaxStartingTime > 0)
{ //start failed due timeout
phase = phaseType.tpOff;
StartTime = -1;
}
ConsumeFuel(); // for possible setting Starved = false when fuel tank
// is refilled (fuel crossfeed etc.)
return(EngPower_HP);
}
private double Start()
{
double EngPower_HP = 0.0, eff_coef;
EngStarting = false;
if ((N1 > 15.0) && !starved)
{ // minimum 15% N2 needed for start
double old_N1 = N1;
cranking = true; // provided for sound effects signal
if (N1 < IdleN1)
{
EngPower_HP = EnginePowerRPM_N1.GetValue(Prop_RPM, N1);
EngPower_HP *= EnginePowerVC.GetValue();
if (EngPower_HP > MaxPower)
{
EngPower_HP = MaxPower;
}
N1 = ExpSeek(N1, IdleN1 * 1.1, Idle_Max_Delay * 4, Idle_Max_Delay * 2.4);
eff_coef = 9.333 - (N1) / 12; // 430%Fuel at 60%N1
fuelFlow_pph = PSFC * EngPower_HP * eff_coef;
Eng_Temperature = ExpSeek(Eng_Temperature, Eng_ITT_degC, 300, 400);
double ITT_goal = ITT_N1.GetValue((N1 - old_N1) * 300 + N1, 1);
Eng_ITT_degC = ExpSeek(Eng_ITT_degC, ITT_goal, ITT_Delay, ITT_Delay * 1.2);
OilPressure_psi = (N1 / 100.0 * 0.25 + (0.1 - (OilTemp_degK - 273.15) * 0.1 / 80.0) * N1 / 100.0) / 7692.0e-6; //from MPa to psi
OilTemp_degK = Seek(OilTemp_degK, 353.15, 0.4 - N1 * 0.001, 0.04);
}
else
{
phase = phaseType.tpRun;
running = true;
Starter = false;
cranking = false;
fuelFlow_pph = 0;
EngPower_HP = 0.0;
}
}
else
{ // no start if N2 < 15% or Starved
phase = phaseType.tpOff;
Starter = false;
}
ConsumeFuel();
return(EngPower_HP);
}
private double Run()
{
//TODO check it. Not used double idlethrust, milthrust;
double thrust = 0.0, EngPower_HP, eff_coef;
running = true; Starter = false; EngStarting = false;
//---
double old_N1 = N1;
N1 = ExpSeek(N1, IdleN1 + ThrottleCmd * N1_factor, Idle_Max_Delay, Idle_Max_Delay * 2.4);
EngPower_HP = EnginePowerRPM_N1.GetValue(Prop_RPM, N1);
EngPower_HP *= EnginePowerVC.GetValue();
if (EngPower_HP > MaxPower)
{
EngPower_HP = MaxPower;
}
eff_coef = 9.333 - (N1) / 12; // 430%Fuel at 60%N1
fuelFlow_pph = PSFC * EngPower_HP * eff_coef;
Eng_Temperature = ExpSeek(Eng_Temperature, Eng_ITT_degC, 300, 400);
double ITT_goal = ITT_N1.GetValue((N1 - old_N1) * 300 + N1, 1);
Eng_ITT_degC = ExpSeek(Eng_ITT_degC, ITT_goal, ITT_Delay, ITT_Delay * 1.2);
OilPressure_psi = (N1 / 100.0 * 0.25 + (0.1 - (OilTemp_degK - 273.15) * 0.1 / 80.0) * N1 / 100.0) / 7692.0e-6; //from MPa to psi
//---
EPR = 1.0 + thrust / MilThrust;
OilTemp_degK = Seek(OilTemp_degK, 353.15, 0.4 - N1 * 0.001, 0.04);
ConsumeFuel();
if (Cutoff)
{
phase = phaseType.tpOff;
}
if (starved)
{
phase = phaseType.tpOff;
}
return(EngPower_HP);
}