1 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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4 Author: Jon S. Berndt
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5 Date started: 01/21/99
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7 ------------- Copyright (C) 1999 Jon S. Berndt (jsb@hal-pc.org) -------------
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9 This program is free software; you can redistribute it and/or modify it under
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10 the terms of the GNU General Public License as published by the Free Software
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11 Foundation; either version 2 of the License, or (at your option) any later
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14 This program is distributed in the hope that it will be useful, but WITHOUT
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15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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16 FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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19 You should have received a copy of the GNU General Public License along with
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20 this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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21 Place - Suite 330, Boston, MA 02111-1307, USA.
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23 Further information about the GNU General Public License can also be found on
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24 the world wide web at http://www.gnu.org.
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26 FUNCTIONAL DESCRIPTION
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27 --------------------------------------------------------------------------------
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29 Based on Flightgear code, which is based on LaRCSim. This class simulates
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33 --------------------------------------------------------------------------------
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34 01/21/99 JSB Created
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36 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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38 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
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43 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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45 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
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48 # include <simgear/compiler.h>
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49 # include STL_STRING
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50 SG_USING_STD(string);
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51 # ifdef SG_HAVE_STD_INCLUDES
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54 # include <vector.h>
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61 #include "FGJSBBase.h"
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63 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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65 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
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67 #define ID_ENGINE "$Id$"
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71 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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72 FORWARD DECLARATIONS
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73 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
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80 class FGTranslation;
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89 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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90 COMMENTS, REFERENCES, and NOTES [use "class documentation" below for API docs]
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91 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
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93 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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95 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
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97 /** Base class for all engines.
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98 This base class contains methods and members common to all engines, such as
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99 logic to drain fuel from the appropriate tank, etc.
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100 @author Jon S. Berndt
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104 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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106 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
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108 class FGEngine : public FGJSBBase
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111 FGEngine(FGFDMExec* exec);
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112 virtual ~FGEngine();
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114 enum EngineType {etUnknown, etRocket, etPiston, etTurboProp, etTurboJet, etTurboShaft};
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116 virtual float GetThrottleMin(void) { return MinThrottle; }
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117 virtual float GetThrottleMax(void) { return MaxThrottle; }
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118 float GetThrottle(void) { return Throttle; }
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119 float GetMixture(void) { return Mixture; }
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120 float GetThrust(void) { return Thrust; }
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121 bool GetStarved(void) { return Starved; }
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122 bool GetFlameout(void) { return Flameout; }
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123 bool GetRunning(void) { return Running; }
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124 bool GetCranking(void) { return Cranking; }
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125 int GetType(void) { return Type; }
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126 string GetName(void) { return Name; }
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128 virtual float getManifoldPressure_inHg () const {
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129 return ManifoldPressure_inHg;
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131 virtual float getExhaustGasTemp_degF () const {
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132 return (ExhaustGasTemp_degK - 273) * (9.0 / 5.0) + 32.0;
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134 virtual float getCylinderHeadTemp_degF () const {
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135 return (CylinderHeadTemp_degK - 273) * (9.0 / 5.0) + 32.0;
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137 virtual float getOilPressure_psi () const {
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138 return OilPressure_psi;
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140 virtual float getOilTemp_degF () const {
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141 return (OilTemp_degK - 273.0) * (9.0 / 5.0) + 32.0;
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144 void SetStarved(bool tt) {Starved = tt;}
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145 void SetStarved(void) {Starved = true;}
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147 void SetRunning(bool bb) { Running=bb; }
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148 void SetName(string name) {Name = name;}
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149 void AddFeedTank(int tkID);
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151 void SetMagnetos(int m) { Magnetos = m; }
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152 void SetStarter(bool s) { Starter = s;}
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154 /** Calculates the thrust of the engine, and other engine functions.
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155 @param PowerRequired this is the power required to run the thrusting device
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156 such as a propeller. This resisting effect must be provided to the
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158 @return Thrust in pounds */
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159 virtual float Calculate(float PowerRequired) {return 0.0;};
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161 /** Reduces the fuel in the active tanks by the amount required.
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162 This function should be called from within the
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163 derived class' Calculate() function before any other calculations are
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164 done. This base class method removes fuel from the fuel tanks as
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165 appropriate, and sets the starved flag if necessary. */
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166 void ConsumeFuel(void);
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168 /** The fuel need is calculated based on power levels and flow rate for that
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169 power level. It is also turned from a rate into an actual amount (pounds)
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170 by multiplying it by the delta T and the rate.
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171 @return Total fuel requirement for this engine in pounds. */
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172 float CalcFuelNeed(void);
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174 /** The oxidizer need is calculated based on power levels and flow rate for that
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175 power level. It is also turned from a rate into an actual amount (pounds)
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176 by multiplying it by the delta T and the rate.
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177 @return Total oxidizer requirement for this engine in pounds. */
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178 float CalcOxidizerNeed(void);
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180 /// Sets engine placement information
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181 void SetPlacement(float x, float y, float z, float pitch, float yaw);
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183 virtual float GetPowerAvailable(void) {return 0.0;};
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185 bool GetTrimMode(void) {return TrimMode;}
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186 void SetTrimMode(bool state) {TrimMode = state;}
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194 float SLFuelFlowMax;
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195 float SLOxiFlowMax;
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204 float FuelNeed, OxidizerNeed;
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213 float ManifoldPressure_inHg;
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214 float ExhaustGasTemp_degK;
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215 float CylinderHeadTemp_degK;
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216 float OilPressure_psi;
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217 float OilTemp_degK;
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219 FGFDMExec* FDMExec;
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221 FGAtmosphere* Atmosphere;
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223 FGPropulsion* Propulsion;
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224 FGAircraft* Aircraft;
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225 FGTranslation* Translation;
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226 FGRotation* Rotation;
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227 FGPosition* Position;
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228 FGAuxiliary* Auxiliary;
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231 vector <int> SourceTanks;
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235 #include "FGState.h"
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236 #include "FGFDMExec.h"
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237 #include "FGAtmosphere.h"
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239 #include "FGAircraft.h"
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240 #include "FGTranslation.h"
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241 #include "FGRotation.h"
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242 #include "FGPropulsion.h"
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243 #include "FGPosition.h"
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244 #include "FGAuxiliary.h"
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245 #include "FGOutput.h"
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246 #include "FGDefs.h"
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248 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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