FGRocket.h

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/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 Header:       FGRocket.h
 Author:       Jon S. Berndt
 Date started: 09/12/2000
 
 ------------- Copyright (C) 2000  Jon S. Berndt (jon@jsbsim.org) --------------
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU Lesser 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 Lesser General Public License for more
 details.
 
 You should have received a copy of the GNU Lesser 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 Lesser General Public License can also be found on
 the world wide web at http://www.gnu.org.
 
HISTORY
--------------------------------------------------------------------------------
09/12/2000  JSB  Created
 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
SENTRY
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
 
#ifndef FGROCKET_H
#define FGROCKET_H
 
/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
INCLUDES
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
 
#include "FGEngine.h"
#include "math/FGTable.h"
#include "math/FGFunction.h"
 
/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
FORWARD DECLARATIONS
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
 
namespace JSBSim {
 
/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
CLASS DOCUMENTATION
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/

 
/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
CLASS DECLARATION
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
 
class FGRocket : public FGEngine
{
public:
  FGRocket(FGFDMExec* exec, Element *el, int engine_number, struct FGEngine::Inputs& input);

  ~FGRocket(void);

  void Calculate(void);

  double CalcFuelNeed(void);

  double CalcOxidizerNeed(void);

  double GetTotalImpulse(void) const {return It;}

  double GetVacTotalImpulse(void) const {return ItVac;}

  bool GetFlameout(void) {return Flameout;}
 
  double GetOxiFlowRate(void) const {return OxidizerFlowRate;}
 
  double GetMixtureRatio(void) const {return MxR;}
 
  double GetIsp(void) const {return Isp;}
 
  void SetMixtureRatio(double mix) {MxR = mix;}
 
  void SetIsp(double isp) {Isp = isp;}
 
  std::string GetEngineLabels(const std::string& delimiter);
  std::string GetEngineValues(const std::string& delimiter);

  void SetThrustVariation(double var) {ThrustVariation = var;}

  void SetTotalIspVariation(double var) {TotalIspVariation = var;}

  double GetThrustVariation(void) const {return ThrustVariation;}

  double GetTotalIspVariation(void) const {return TotalIspVariation;}
 
private:
  double GetVacThrust(void) const {return VacThrust;}
 
  void bindmodel(FGPropertyManager* pm);
 
  double Isp; // Vacuum Isp
  double It;    // Total actual Isp
  double ItVac; // Total Vacuum Isp
  double MxR; // Mixture Ratio
  double BurnTime;
  double ThrustVariation;
  double TotalIspVariation;
  double VacThrust;
  double previousFuelNeedPerTank;
  double previousOxiNeedPerTank;
  double OxidizerExpended;
  double TotalPropellantExpended;
  double SLOxiFlowMax;
  double PropFlowMax;
  double OxidizerFlowRate;
  double PropellantFlowRate;
  bool Flameout;
  double BuildupTime;
  FGTable* ThrustTable;
  FGFunction* isp_function;
  FGFDMExec* FDMExec;
 
  void Debug(int from);
};
}
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
#endif