/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
+
Module: FGEngine.cpp
Author: Jon Berndt
Date started: 01/21/99
Called by: FGAircraft
-
+
------------- Copyright (C) 1999 Jon S. Berndt (jsb@hal-pc.org) -------------
-
+
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.
-
+
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
-
+
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA.
-
+
Further information about the GNU General Public License can also be found on
the world wide web at http://www.gnu.org.
-
+
FUNCTIONAL DESCRIPTION
--------------------------------------------------------------------------------
See header file.
-
+
HISTORY
--------------------------------------------------------------------------------
01/21/99 JSB Created
09/03/99 JSB Changed Rocket thrust equation to correct -= Thrust instead of
+= Thrust (thanks to Tony Peden)
-
+
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
INCLUDES
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
# include <fstream.h>
# endif
#else
-# if defined(sgi) && !defined(__GNUC__)
+# if defined(sgi) && !defined(__GNUC__) && (_COMPILER_VERSION < 740)
# include <fstream.h>
# else
# include <fstream>
#include "FGEngine.h"
#include "FGTank.h"
+#include "FGPropeller.h"
+#include "FGNozzle.h"
namespace JSBSim {
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
-FGEngine::FGEngine(FGFDMExec* exec)
- : Name(""),
- Type(etUnknown),
- X(0), Y(0), Z(0),
- EnginePitch(0), EngineYaw(0),
- SLFuelFlowMax(0), SLOxiFlowMax(0),
- MaxThrottle(1.0), MinThrottle(0.0),
- Thrust(0.0),
- Throttle(0.0),
- Mixture(1.0),
- Magnetos(0),
- Starter(false),
- FuelNeed(0.0), OxidizerNeed(0.0),
- Starved(false), Flameout(false), Running(false), Cranking(false),
- Augmentation(false), Injection(false), Ignition(false),
- Reversed(false), Cutoff(true), Nitrous(false),
- PctPower(0.0),
- EngineNumber(-1),
- TrimMode(false),
- FuelFlow_gph(0.0),
- ManifoldPressure_inHg(0.0),
- ExhaustGasTemp_degK(0.0),
- CylinderHeadTemp_degK(0.0),
- OilPressure_psi(0.0),
- OilTemp_degK(0.0),
- FuelFlow_pph(0.0),
- N1(0.0), N2(0.0), EGT_degC(0.0),
- InletPosition(0.0), NozzlePosition(0.0),
- FDMExec(exec),
- State(FDMExec->GetState()),
- Atmosphere(FDMExec->GetAtmosphere()),
- FCS(FDMExec->GetFCS()),
- Propulsion(FDMExec->GetPropulsion()),
- Aircraft(FDMExec->GetAircraft()),
- Translation(FDMExec->GetTranslation()),
- Rotation(FDMExec->GetRotation()),
- Position(FDMExec->GetPosition()),
- Auxiliary(FDMExec->GetAuxiliary()),
- Output(FDMExec->GetOutput())
+FGEngine::FGEngine(FGFDMExec* exec, int engine_number) : EngineNumber(engine_number)
{
+ Name = "";
+ Type = etUnknown;
+ X = Y = Z = 0.0;
+ EnginePitch = EngineYaw = 0.0;
+ SLFuelFlowMax = SLOxiFlowMax = 0.0;
+ MaxThrottle = 1.0;
+ MinThrottle = 0.0;
+ Thrust = 0.0;
+ Throttle = 0.0;
+ Mixture = 1.0;
+ Starter = false;
+ FuelNeed = OxidizerNeed = 0.0;
+ Starved = Running = Cranking = false;
+ PctPower = 0.0;
+ TrimMode = false;
+ FuelFlow_gph = 0.0;
+ FuelFlow_pph = 0.0;
+
+ FDMExec = exec;
+ State = FDMExec->GetState();
+ Atmosphere = FDMExec->GetAtmosphere();
+ FCS = FDMExec->GetFCS();
+ Propulsion = FDMExec->GetPropulsion();
+ Aircraft = FDMExec->GetAircraft();
+ Propagate = FDMExec->GetPropagate();
+ Auxiliary = FDMExec->GetAuxiliary();
+ Output = FDMExec->GetOutput();
+
+ PropertyManager = FDMExec->GetPropertyManager();
+
Debug(0);
}
void FGEngine::ConsumeFuel(void)
{
- double Fshortage, Oshortage;
+ double Fshortage, Oshortage, TanksWithFuel;
FGTank* Tank;
if (TrimMode) return;
- Fshortage = Oshortage = 0.0;
+ Fshortage = Oshortage = TanksWithFuel = 0.0;
+
+ // count how many assigned tanks have fuel
for (unsigned int i=0; i<SourceTanks.size(); i++) {
- Tank = Propulsion->GetTank(i);
+ Tank = Propulsion->GetTank(SourceTanks[i]);
+ if (Tank->GetContents() > 0.0) {
+ ++TanksWithFuel;
+ }
+ }
+ if (!TanksWithFuel) return;
+
+ for (unsigned int i=0; i<SourceTanks.size(); i++) {
+ Tank = Propulsion->GetTank(SourceTanks[i]);
if (Tank->GetType() == FGTank::ttFUEL) {
- Fshortage += Tank->Reduce(CalcFuelNeed()/Propulsion->GetnumSelectedFuelTanks());
+ Fshortage += Tank->Drain(CalcFuelNeed()/TanksWithFuel);
} else {
- Oshortage += Tank->Reduce(CalcOxidizerNeed()/Propulsion->GetnumSelectedOxiTanks());
+ Oshortage += Tank->Drain(CalcOxidizerNeed()/TanksWithFuel);
}
}
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-double FGEngine::CalcFuelNeed(void) {
+double FGEngine::CalcFuelNeed(void)
+{
FuelNeed = SLFuelFlowMax*PctPower*State->Getdt()*Propulsion->GetRate();
return FuelNeed;
}
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-double FGEngine::CalcOxidizerNeed(void) {
+double FGEngine::CalcOxidizerNeed(void)
+{
OxidizerNeed = SLOxiFlowMax*PctPower*State->Getdt()*Propulsion->GetRate();
return OxidizerNeed;
}
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-void FGEngine::SetPlacement(double x, double y, double z, double pitch, double yaw) {
+void FGEngine::SetPlacement(double x, double y, double z, double pitch, double yaw)
+{
X = x;
Y = y;
Z = z;
SourceTanks.push_back(tkID);
}
+//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+FGColumnVector3& FGEngine::GetBodyForces(void)
+{
+ return Thruster->GetBodyForces();
+}
+
+//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+FGColumnVector3& FGEngine::GetMoments(void)
+{
+ return Thruster->GetMoments();
+}
+
+//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+bool FGEngine::LoadThruster(FGConfigFile* AC_cfg)
+{
+ string token, fullpath, localpath;
+ string thrusterFileName, thrType, engineFileName;
+ FGConfigFile* Cfg_ptr = 0;
+ double xLoc, yLoc, zLoc, Pitch, Yaw;
+ double P_Factor = 0, Sense = 0.0;
+ string enginePath = FDMExec->GetEnginePath();
+ string aircraftPath = FDMExec->GetAircraftPath();
+ thrusterFileName = AC_cfg->GetValue("FILE");
+
+# ifndef macintosh
+ fullpath = enginePath + "/";
+ localpath = aircraftPath + "/" + "/Engines/";
+# else
+ fullpath = enginePath + ";";
+ localpath = aircraftPath + ";" + ";Engines;";
+# endif
+
+ // Look in the Aircraft/Engines directory first
+ FGConfigFile Local_Thruster_cfg(localpath + thrusterFileName + ".xml");
+ FGConfigFile Thruster_cfg(fullpath + thrusterFileName + ".xml");
+
+ if (Local_Thruster_cfg.IsOpen()) {
+ Cfg_ptr = &Local_Thruster_cfg;
+ if (debug_lvl > 0) cout << "\n Reading thruster from file: " << localpath
+ + thrusterFileName + ".xml"<< endl;
+ } else {
+ if (Thruster_cfg.IsOpen()) {
+ Cfg_ptr = &Thruster_cfg;
+ if (debug_lvl > 0) cout << "\n Reading thruster from file: " << fullpath
+ + thrusterFileName + ".xml"<< endl;
+ }
+ }
+
+ if (Cfg_ptr) {
+ Cfg_ptr->GetNextConfigLine();
+ thrType = Cfg_ptr->GetValue();
+
+ if (thrType == "FG_PROPELLER") {
+ Thruster = new FGPropeller(FDMExec, Cfg_ptr);
+ } else if (thrType == "FG_NOZZLE") {
+ Thruster = new FGNozzle(FDMExec, Cfg_ptr);
+ } else if (thrType == "FG_DIRECT") {
+ Thruster = new FGThruster( FDMExec, Cfg_ptr);
+ }
+
+ AC_cfg->GetNextConfigLine();
+ while ((token = AC_cfg->GetValue()) != string("/AC_THRUSTER")) {
+ *AC_cfg >> token;
+ if (token == "XLOC") *AC_cfg >> xLoc;
+ else if (token == "YLOC") *AC_cfg >> yLoc;
+ else if (token == "ZLOC") *AC_cfg >> zLoc;
+ else if (token == "PITCH") *AC_cfg >> Pitch;
+ else if (token == "YAW") *AC_cfg >> Yaw;
+ else if (token == "P_FACTOR") *AC_cfg >> P_Factor;
+ else if (token == "SENSE") *AC_cfg >> Sense;
+ else cerr << "Unknown identifier: " << token << " in engine file: "
+ << engineFileName << endl;
+ }
+
+ Thruster->SetLocation(xLoc, yLoc, zLoc);
+ Thruster->SetAnglesToBody(0, Pitch, Yaw);
+ if (thrType == "FG_PROPELLER" && P_Factor > 0.001) {
+ ((FGPropeller*)Thruster)->SetPFactor(P_Factor);
+ if (debug_lvl > 0) cout << " P-Factor: " << P_Factor << endl;
+ ((FGPropeller*)Thruster)->SetSense(fabs(Sense)/Sense);
+ if (debug_lvl > 0) cout << " Sense: " << Sense << endl;
+ }
+ Thruster->SetdeltaT(State->Getdt() * Propulsion->GetRate());
+ return true;
+ } else {
+
+ cerr << "Could not read thruster config file: " << fullpath
+ + thrusterFileName + ".xml" << endl;
+ return false;
+ }
+
+}
+
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
// The bitmasked value choices are as follows:
// unset: In this case (the default) JSBSim would only print
projects / flightgear.git / blobdiff