1 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
7 ------------- Copyright (C) 1999 Jon S. Berndt (jsb@hal-pc.org) -------------
9 This program is free software; you can redistribute it and/or modify it under
10 the terms of the GNU General Public License as published by the Free Software
11 Foundation; either version 2 of the License, or (at your option) any later
14 This program is distributed in the hope that it will be useful, but WITHOUT
15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
16 FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
19 You should have received a copy of the GNU General Public License along with
20 this program; if not, write to the Free Software Foundation, Inc., 59 Temple
21 Place - Suite 330, Boston, MA 02111-1307, USA.
23 Further information about the GNU General Public License can also be found on
24 the world wide web at http://www.gnu.org.
26 FUNCTIONAL DESCRIPTION
27 --------------------------------------------------------------------------------
29 Based on Flightgear code, which is based on LaRCSim. This class simulates
33 --------------------------------------------------------------------------------
36 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
38 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
43 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
45 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
48 # include <simgear/compiler.h>
51 # ifdef SG_HAVE_STD_INCLUDES
61 #include "FGJSBBase.h"
62 #include "FGThruster.h"
63 #include "FGPropertyManager.h"
65 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
67 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
69 #define ID_ENGINE "$Id$"
74 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
76 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
92 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
94 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
96 /** Base class for all engines.
97 This base class contains methods and members common to all engines, such as
98 logic to drain fuel from the appropriate tank, etc.
103 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
105 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
107 class FGEngine : public FGJSBBase
110 FGEngine(FGFDMExec* exec, int engine_number);
113 enum EngineType {etUnknown, etRocket, etPiston, etTurbine, etElectric};
115 EngineType GetType(void) { return Type; }
116 virtual string GetName(void) { return Name; }
117 string GetThrusterFileName(void) {return thrusterFileName;}
118 void SetEngineFileName(string eng) {engineFileName = eng;}
119 string GetEngineFileName(void) {return engineFileName;}
122 virtual double GetThrottleMin(void) { return MinThrottle; }
123 virtual double GetThrottleMax(void) { return MaxThrottle; }
124 virtual double GetThrottle(void) { return Throttle; }
125 virtual double GetMixture(void) { return Mixture; }
126 virtual bool GetStarter(void) { return Starter; }
128 virtual double getFuelFlow_gph () const {return FuelFlow_gph;}
129 virtual double getFuelFlow_pph () const {return FuelFlow_pph;}
130 virtual double GetThrust(void) { return Thrust; }
131 virtual bool GetStarved(void) { return Starved; }
132 virtual bool GetRunning(void) { return Running; }
133 virtual bool GetCranking(void) { return Cranking; }
135 virtual void SetStarved(bool tt) { Starved = tt; }
136 virtual void SetStarved(void) { Starved = true; }
138 virtual void SetRunning(bool bb) { Running=bb; }
139 virtual void SetName(string name) { Name = name; }
140 virtual void AddFeedTank(int tkID);
141 virtual void SetFuelFreeze(bool f) { FuelFreeze = f; }
143 virtual void SetStarter(bool s) { Starter = s; }
145 /** Calculates the thrust of the engine, and other engine functions.
146 @return Thrust in pounds */
147 virtual double Calculate(void) {return 0.0;}
149 /** Reduces the fuel in the active tanks by the amount required.
150 This function should be called from within the
151 derived class' Calculate() function before any other calculations are
152 done. This base class method removes fuel from the fuel tanks as
153 appropriate, and sets the starved flag if necessary. */
154 virtual void ConsumeFuel(void);
156 /** The fuel need is calculated based on power levels and flow rate for that
157 power level. It is also turned from a rate into an actual amount (pounds)
158 by multiplying it by the delta T and the rate.
159 @return Total fuel requirement for this engine in pounds. */
160 virtual double CalcFuelNeed(void);
162 /** The oxidizer need is calculated based on power levels and flow rate for that
163 power level. It is also turned from a rate into an actual amount (pounds)
164 by multiplying it by the delta T and the rate.
165 @return Total oxidizer requirement for this engine in pounds. */
166 virtual double CalcOxidizerNeed(void);
168 /// Sets engine placement information
169 virtual void SetPlacement(double x, double y, double z, double pitch, double yaw);
170 double GetPlacementX(void) const {return X;}
171 double GetPlacementY(void) const {return Y;}
172 double GetPlacementZ(void) const {return Z;}
173 double GetPitch(void) const {return EnginePitch;}
174 double GetYaw(void) const {return EngineYaw;}
176 virtual double GetPowerAvailable(void) {return 0.0;};
178 virtual bool GetTrimMode(void) {return TrimMode;}
179 virtual void SetTrimMode(bool state) {TrimMode = state;}
181 virtual FGColumnVector3& GetBodyForces(void);
182 virtual FGColumnVector3& GetMoments(void);
184 bool LoadThruster(FGConfigFile* AC_cfg);
185 FGThruster* GetThruster(void) {return Thruster;}
187 virtual string GetEngineLabels(string delimeter) = 0;
188 virtual string GetEngineValues(string delimeter) = 0;
189 int GetNumSourceTanks(void) {return SourceTanks.size();}
190 int GetSourceTank(int t) {return SourceTanks[t];}
193 FGPropertyManager* PropertyManager;
195 string thrusterFileName;
196 string engineFileName;
197 const int EngineNumber;
202 double SLFuelFlowMax;
225 FGAtmosphere* Atmosphere;
227 FGPropulsion* Propulsion;
228 FGAircraft* Aircraft;
229 FGPropagate* Propagate;
230 FGAuxiliary* Auxiliary;
232 FGThruster* Thruster;
234 vector <int> SourceTanks;
235 void Debug(int from);
239 #include "FGFDMExec.h"
240 #include "FGAtmosphere.h"
242 #include "FGAircraft.h"
243 #include "FGPropagate.h"
244 #include "FGPropulsion.h"
245 #include "FGAuxiliary.h"
246 #include "FGOutput.h"
247 #include "FGThruster.h"
248 #include "FGConfigFile.h"
250 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%