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 Lesser 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 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License along with
19 this program; if not, write to the Free Software Foundation, Inc., 59 Temple
20 Place - Suite 330, Boston, MA 02111-1307, USA.
22 Further information about the GNU Lesser General Public License can also be found on
23 the world wide web at http://www.gnu.org.
25 FUNCTIONAL DESCRIPTION
26 --------------------------------------------------------------------------------
28 Based on Flightgear code, which is based on LaRCSim. This class simulates
32 --------------------------------------------------------------------------------
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37 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
42 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
44 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
47 # include <simgear/compiler.h>
50 # ifdef SG_HAVE_STD_INCLUDES
60 #include <FGJSBBase.h>
61 #include "FGThruster.h"
62 #include <input_output/FGPropertyManager.h>
63 #include <input_output/FGXMLFileRead.h>
65 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
67 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
69 #define ID_ENGINE "$Id$"
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91 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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95 /** Base class for all engines.
96 This base class contains methods and members common to all engines, such as
97 logic to drain fuel from the appropriate tank, etc.
102 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
104 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
106 class FGEngine : public FGJSBBase, public FGXMLFileRead
109 FGEngine(FGFDMExec* exec, Element* el, int engine_number);
112 enum EngineType {etUnknown, etRocket, etPiston, etTurbine, etTurboprop, etElectric};
114 EngineType GetType(void) { return Type; }
115 virtual string GetName(void) { return Name; }
118 virtual double GetThrottleMin(void) { return MinThrottle; }
119 virtual double GetThrottleMax(void) { return MaxThrottle; }
120 virtual double GetThrottle(void) { return Throttle; }
121 virtual double GetMixture(void) { return Mixture; }
122 virtual bool GetStarter(void) { return Starter; }
124 virtual double getFuelFlow_gph () const {return FuelFlow_gph;}
125 virtual double getFuelFlow_pph () const {return FuelFlow_pph;}
126 virtual double GetThrust(void) { return Thrust; }
127 virtual bool GetStarved(void) { return Starved; }
128 virtual bool GetRunning(void) { return Running; }
129 virtual bool GetCranking(void) { return Cranking; }
131 virtual void SetStarved(bool tt) { Starved = tt; }
132 virtual void SetStarved(void) { Starved = true; }
134 virtual void SetRunning(bool bb) { Running=bb; }
135 virtual void SetName(string name) { Name = name; }
136 virtual void AddFeedTank(int tkID);
137 virtual void SetFuelFreeze(bool f) { FuelFreeze = f; }
139 virtual void SetStarter(bool s) { Starter = s; }
141 /** Calculates the thrust of the engine, and other engine functions.
142 @return Thrust in pounds */
143 virtual double Calculate(void) {return 0.0;}
145 /** Reduces the fuel in the active tanks by the amount required.
146 This function should be called from within the
147 derived class' Calculate() function before any other calculations are
148 done. This base class method removes fuel from the fuel tanks as
149 appropriate, and sets the starved flag if necessary. */
150 virtual void ConsumeFuel(void);
152 /** The fuel need is calculated based on power levels and flow rate for that
153 power level. It is also turned from a rate into an actual amount (pounds)
154 by multiplying it by the delta T and the rate.
155 @return Total fuel requirement for this engine in pounds. */
156 virtual double CalcFuelNeed(void);
158 /** The oxidizer need is calculated based on power levels and flow rate for that
159 power level. It is also turned from a rate into an actual amount (pounds)
160 by multiplying it by the delta T and the rate.
161 @return Total oxidizer requirement for this engine in pounds. */
162 virtual double CalcOxidizerNeed(void);
164 /// Sets engine placement information
165 virtual void SetPlacement(FGColumnVector3& location, FGColumnVector3& orientation);
167 virtual double GetPowerAvailable(void) {return 0.0;};
169 virtual bool GetTrimMode(void) {return TrimMode;}
170 virtual void SetTrimMode(bool state) {TrimMode = state;}
172 virtual FGColumnVector3& GetBodyForces(void);
173 virtual FGColumnVector3& GetMoments(void);
175 bool LoadThruster(Element *el);
176 FGThruster* GetThruster(void) {return Thruster;}
178 virtual string GetEngineLabels(string delimeter) = 0;
179 virtual string GetEngineValues(string delimeter) = 0;
182 FGPropertyManager* PropertyManager;
184 const int EngineNumber;
189 double SLFuelFlowMax;
212 FGAtmosphere* Atmosphere;
214 FGPropulsion* Propulsion;
215 FGAircraft* Aircraft;
216 FGPropagate* Propagate;
217 FGAuxiliary* Auxiliary;
218 FGThruster* Thruster;
220 vector <int> SourceTanks;
221 void Debug(int from);
225 #include <FGFDMExec.h>
226 #include <models/FGAtmosphere.h>
227 #include <models/FGFCS.h>
228 #include <models/FGAircraft.h>
229 #include <models/FGPropagate.h>
230 #include <models/FGPropulsion.h>
231 #include <models/FGAuxiliary.h>
232 #include <models/propulsion/FGThruster.h>
233 #include <input_output/FGXMLElement.h>
235 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%