# include <fstream.h>
# endif
#else
-# include <fstream>
+# if defined(sgi) && !defined(__GNUC__)
+# include <fstream.h>
+# else
+# include <fstream>
+# endif
#endif
#include "FGEngine.h"
-#include "FGState.h"
-#include "FGFDMExec.h"
-#include "FGAtmosphere.h"
-#include "FGFCS.h"
-#include "FGAircraft.h"
-#include "FGTranslation.h"
-#include "FGRotation.h"
-#include "FGPosition.h"
-#include "FGAuxiliary.h"
-#include "FGOutput.h"
-#include "FGDefs.h"
-
-static const char *IdSrc = "$Header$";
-static const char *IdHdr = "ID_ENGINE";
+#include "FGTank.h"
+
+static const char *IdSrc = "$Id$";
+static const char *IdHdr = ID_ENGINE;
/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
CLASS IMPLEMENTATION
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
-FGEngine::FGEngine(FGFDMExec* fdex, string enginePath, string engineName, int num) {
- string fullpath;
- string tag;
-
- FDMExec = fdex;
-
- State = FDMExec->GetState();
- Atmosphere = FDMExec->GetAtmosphere();
- FCS = FDMExec->GetFCS();
- Aircraft = FDMExec->GetAircraft();
- Translation = FDMExec->GetTranslation();
- Rotation = FDMExec->GetRotation();
- Position = FDMExec->GetPosition();
- Auxiliary = FDMExec->GetAuxiliary();
- Output = FDMExec->GetOutput();
-
- Name = engineName;
-
-# ifndef macintosh
- fullpath = enginePath + "/" + engineName + ".xml";
-# else
- fullpath = enginePath + ";" + engineName + ".xml";
-# endif
-
- cout << " Reading engine: " << engineName << " from file: " << fullpath << endl;
- ifstream enginefile(fullpath.c_str());
-
- if (enginefile) {
- enginefile >> tag;
-
- if (tag == "ROCKET") Type = etRocket;
- else if (tag == "PISTON") Type = etPiston;
- else if (tag == "TURBOPROP") Type = etTurboProp;
- else if (tag == "TURBOJET") Type = etTurboJet;
- else Type = etUnknown;
-
- switch(Type) {
- case etTurboProp:
- case etTurboJet:
- cerr << "Unsupported Engine type" << tag << endl;
- break;
- case etUnknown:
- cerr << "Unknown engine type: " << tag << endl;
- break;
- case etPiston:
- enginefile >> X;
- enginefile >> Y;
- enginefile >> Z;
- enginefile >> EnginePitch;
- enginefile >> EngineYaw;
- enginefile >> BrakeHorsePower;
- enginefile >> MaxThrottle;
- enginefile >> MinThrottle;
- enginefile >> SLFuelFlowMax;
- enginefile >> SpeedSlope;
- enginefile >> SpeedIntercept;
- enginefile >> AltitudeSlope;
-
- break;
- case etRocket:
- enginefile >> X;
- enginefile >> Y;
- enginefile >> Z;
- enginefile >> EnginePitch;
- enginefile >> EngineYaw;
- enginefile >> SLThrustMax;
- enginefile >> VacThrustMax;
- enginefile >> MaxThrottle;
- enginefile >> MinThrottle;
- enginefile >> SLFuelFlowMax;
- enginefile >> SLOxiFlowMax;
- break;
- }
-
- enginefile.close();
- } else {
- cerr << "Unable to open engine definition file " << fullpath.c_str() << endl;
- }
-
- EngineNumber = num;
- Thrust = PctPower = 0.0;
- Starved = Flameout = false;
- Running = true;
+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),
+ 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),
+ 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())
+{
+ Debug(0);
}
+//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-FGEngine::~FGEngine(void) {}
-
-
-float FGEngine::CalcRocketThrust(void) {
- float lastThrust;
-
- Throttle = FCS->GetThrottlePos(EngineNumber);
- lastThrust = Thrust; // last actual thrust
-
- if (Throttle < MinThrottle || Starved) {
- PctPower = Thrust = 0.0; // desired thrust
- Flameout = true;
- } else {
- PctPower = Throttle / MaxThrottle;
- Thrust = PctPower*((1.0 - Atmosphere->GetDensityRatio())*(VacThrustMax - SLThrustMax) +
- SLThrustMax); // desired thrust
- Flameout = false;
- }
-
+FGEngine::~FGEngine()
+{
+ Debug(1);
+}
- if(State->Getdt() > 0.0) {
- Thrust -= 0.8*(Thrust - lastThrust); // actual thrust
+//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+// This base class function should be called from within the
+// derived class' Calculate() function before any other calculations are done.
+// This base class method removes fuel from the fuel tanks as appropriate,
+// and sets the starved flag if necessary.
+
+void FGEngine::ConsumeFuel(void)
+{
+ double Fshortage, Oshortage;
+ FGTank* Tank;
+
+ if (TrimMode) return;
+ Fshortage = Oshortage = 0.0;
+ for (unsigned int i=0; i<SourceTanks.size(); i++) {
+ Tank = Propulsion->GetTank(i);
+ if (Tank->GetType() == FGTank::ttFUEL) {
+ Fshortage += Tank->Reduce(CalcFuelNeed()/Propulsion->GetnumSelectedFuelTanks());
+ } else {
+ Oshortage += Tank->Reduce(CalcOxidizerNeed()/Propulsion->GetnumSelectedOxiTanks());
+ }
}
- return Thrust;
+ if (Fshortage < 0.00 || Oshortage < 0.00) Starved = true;
+ else Starved = false;
}
+//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-float FGEngine::CalcPistonThrust(void) {
- float v,h,pa;
+double FGEngine::CalcFuelNeed(void) {
+ FuelNeed = SLFuelFlowMax*PctPower*State->Getdt()*Propulsion->GetRate();
+ return FuelNeed;
+}
- Throttle = FCS->GetThrottlePos(EngineNumber);
- Throttle /= 100;
+//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- v = Translation->GetVt();
- h = Position->Geth();
+double FGEngine::CalcOxidizerNeed(void) {
+ OxidizerNeed = SLOxiFlowMax*PctPower*State->Getdt()*Propulsion->GetRate();
+ return OxidizerNeed;
+}
- if (v < 10)
- v = 10;
- if (h < 0)
- h = 0;
+//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- pa=(SpeedSlope*v + SpeedIntercept)*(1 +AltitudeSlope*h)*BrakeHorsePower;
+void FGEngine::SetPlacement(double x, double y, double z, double pitch, double yaw) {
+ X = x;
+ Y = y;
+ Z = z;
+ EnginePitch = pitch;
+ EngineYaw = yaw;
+}
- Thrust = Throttle*(pa*HPTOFTLBSSEC)/v;
+//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- return Thrust;
+void FGEngine::AddFeedTank(int tkID)
+{
+ SourceTanks.push_back(tkID);
}
+//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+// The bitmasked value choices are as follows:
+// unset: In this case (the default) JSBSim would only print
+// out the normally expected messages, essentially echoing
+// the config files as they are read. If the environment
+// variable is not set, debug_lvl is set to 1 internally
+// 0: This requests JSBSim not to output any messages
+// whatsoever.
+// 1: This value explicity requests the normal JSBSim
+// startup messages
+// 2: This value asks for a message to be printed out when
+// a class is instantiated
+// 4: When this value is set, a message is displayed when a
+// FGModel object executes its Run() method
+// 8: When this value is set, various runtime state variables
+// are printed out periodically
+// 16: When set various parameters are sanity checked and
+// a message is printed out when they go out of bounds
+
+void FGEngine::Debug(int from)
+{
+ if (debug_lvl <= 0) return;
+
+ if (debug_lvl & 1) { // Standard console startup message output
+ if (from == 0) { // Constructor
-float FGEngine::CalcThrust(void) {
- if(Running) {
- switch(Type) {
- case etRocket:
- return CalcRocketThrust();
- // break;
- case etPiston:
- return CalcPistonThrust();
- // break;
- default:
- return 9999.0;
- // break;
}
- } else {
- return 0;
}
-}
-
-float FGEngine::CalcFuelNeed() {
- FuelNeed = SLFuelFlowMax*PctPower;
- return FuelNeed;
-}
-
-
-float FGEngine::CalcOxidizerNeed() {
- OxidizerNeed = SLOxiFlowMax*PctPower;
- return OxidizerNeed;
+ if (debug_lvl & 2 ) { // Instantiation/Destruction notification
+ if (from == 0) cout << "Instantiated: FGEngine" << endl;
+ if (from == 1) cout << "Destroyed: FGEngine" << endl;
+ }
+ if (debug_lvl & 4 ) { // Run() method entry print for FGModel-derived objects
+ }
+ if (debug_lvl & 8 ) { // Runtime state variables
+ }
+ if (debug_lvl & 16) { // Sanity checking
+ }
+ if (debug_lvl & 64) {
+ if (from == 0) { // Constructor
+ cout << IdSrc << endl;
+ cout << IdHdr << endl;
+ }
+ }
}
projects / flightgear.git / blobdiff