/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
+
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 {
static const char *IdSrc = "$Id$";
static const char *IdHdr = ID_ENGINE;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
-FGEngine::FGEngine(FGFDMExec* exec) {
- 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();
-
- Mixture = 1.0; // FIXME: get actual value\r
- Thrust = PctPower = 0.0;
- Starved = Flameout = false;
- Running = true;
-
- if (debug_lvl & 2) cout << "Instantiated: FGEngine" << endl;
+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);
}
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
FGEngine::~FGEngine()
{
- if (debug_lvl & 2) cout << "Destroyed: FGEngine" << endl;
+ Debug(1);
}
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
// This base class method removes fuel from the fuel tanks as appropriate,
// and sets the starved flag if necessary.
-void FGEngine::ConsumeFuel(void) {
- float Fshortage, Oshortage;
+void FGEngine::ConsumeFuel(void)
+{
+ double Fshortage, Oshortage, TanksWithFuel;
FGTank* Tank;
if (TrimMode) return;
+ Fshortage = Oshortage = TanksWithFuel = 0.0;
- Fshortage = Oshortage = 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);
}
}
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-float FGEngine::CalcFuelNeed(void) {
+double FGEngine::CalcFuelNeed(void)
+{
FuelNeed = SLFuelFlowMax*PctPower*State->Getdt()*Propulsion->GetRate();
return FuelNeed;
}
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-float FGEngine::CalcOxidizerNeed(void) {
+double FGEngine::CalcOxidizerNeed(void)
+{
OxidizerNeed = SLOxiFlowMax*PctPower*State->Getdt()*Propulsion->GetRate();
return OxidizerNeed;
}
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-void FGEngine::SetPlacement(float x, float y, float z, float pitch, float yaw) {
+void FGEngine::SetPlacement(double x, double y, double z, double pitch, double yaw)
+{
X = x;
Y = y;
Z = z;
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-void FGEngine::Debug(void)
+FGColumnVector3& FGEngine::GetBodyForces(void)
+{
+ return Thruster->GetBodyForces();
+}
+
+//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+FGColumnVector3& FGEngine::GetMoments(void)
+{
+ return Thruster->GetMoments();
+}
+
+//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+bool FGEngine::LoadThruster(FGConfigFile* AC_cfg)
{
- //TODO: Add your source code here
+ 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
+// 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
+
+ }
+ }
+ 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