C++ (Cpp) doEGT Examples

Example #1

File: FGPiston.cpp Project: 8W9aG/jsbsim

//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
void FGPiston::Calculate(void)
{
  RunPreFunctions();

  if (FuelFlow_gph > 0.0) ConsumeFuel();

  Throttle = FCS->GetThrottlePos(EngineNumber);
  Mixture = FCS->GetMixturePos(EngineNumber);

  // Input values.

  p_amb = Atmosphere->GetPressure() * psftopa;
  double p = Auxiliary->GetTotalPressure() * psftopa;
  p_ram = (p - p_amb) * Ram_Air_Factor + p_amb;
  T_amb = RankineToKelvin(Atmosphere->GetTemperature());

  RPM = Thruster->GetRPM() * Thruster->GetGearRatio();
  MeanPistonSpeed_fps =  ( RPM * Stroke) / (360); // AKA 2 * (RPM/60) * ( Stroke / 12) or 2NS

  IAS = Auxiliary->GetVcalibratedKTS();

  doEngineStartup();
  if (Boosted) doBoostControl();
  doMAP();
  doAirFlow();
  doFuelFlow();

  //Now that the fuel flow is done check if the mixture is too lean to run the engine
  //Assume lean limit at 22 AFR for now - thats a thi of 0.668
  //This might be a bit generous, but since there's currently no audiable warning of impending
  //cutout in the form of misfiring and/or rough running its probably reasonable for now.

  //  if (equivalence_ratio < 0.668)
  //    Running = false;

  doEnginePower();
  if (IndicatedHorsePower < 0.1250) Running = false;

  doEGT();
  doCHT();
  doOilTemperature();
  doOilPressure();

  if (Thruster->GetType() == FGThruster::ttPropeller) {
    ((FGPropeller*)Thruster)->SetAdvance(FCS->GetPropAdvance(EngineNumber));
    ((FGPropeller*)Thruster)->SetFeather(FCS->GetPropFeather(EngineNumber));
  }

  PowerAvailable = (HP * hptoftlbssec) - Thruster->GetPowerRequired();
  Thruster->Calculate(PowerAvailable);

  RunPostFunctions();
}

Example #2

File: FGPiston.cpp Project: matthewzhenggong/jsbsim

void FGPiston::Calculate(void)
{
  // Input values.

  p_amb = in.Pressure * psftopa;
  double p = in.TotalPressure * psftopa;
  p_ram = (p - p_amb) * Ram_Air_Factor + p_amb;
  T_amb = RankineToKelvin(in.Temperature);

  RunPreFunctions();

  TotalDeltaT = ( in.TotalDeltaT < 1e-9 ) ? 1.0 : in.TotalDeltaT;

/* The thruster controls the engine RPM because it encapsulates the gear ratio and other transmission variables */
  RPM = Thruster->GetEngineRPM();

  MeanPistonSpeed_fps =  ( RPM * Stroke) / (360); // AKA 2 * (RPM/60) * ( Stroke / 12) or 2NS

  IAS = in.Vc;

  doEngineStartup();
  if (Boosted) doBoostControl();
  doMAP();
  doAirFlow();
  doFuelFlow();

  //Now that the fuel flow is done check if the mixture is too lean to run the engine
  //Assume lean limit at 22 AFR for now - thats a thi of 0.668
  //This might be a bit generous, but since there's currently no audiable warning of impending
  //cutout in the form of misfiring and/or rough running its probably reasonable for now.

  //  if (equivalence_ratio < 0.668)
  //    Running = false;

  doEnginePower();
  if (IndicatedHorsePower < 0.1250) Running = false;

  doEGT();
  doCHT();
  doOilTemperature();
  doOilPressure();

  if (Thruster->GetType() == FGThruster::ttPropeller) {
    ((FGPropeller*)Thruster)->SetAdvance(in.PropAdvance[EngineNumber]);
    ((FGPropeller*)Thruster)->SetFeather(in.PropFeather[EngineNumber]);
  }

  LoadThrusterInputs();
  Thruster->Calculate(HP * hptoftlbssec);

  RunPostFunctions();
}