98 lines
3.1 KiB
C++
98 lines
3.1 KiB
C++
/*******************************************************************************
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Header: FGAtmosphere.h
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Author: Jon Berndt
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Implementation of 1959 Standard Atmosphere added by Tony Peden
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Date started: 11/24/98
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------------- Copyright (C) 1999 Jon S. Berndt (jsb@hal-pc.org) -------------
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; either version 2 of the License, or (at your option) any later
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version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place - Suite 330, Boston, MA 02111-1307, USA.
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Further information about the GNU General Public License can also be found on
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the world wide web at http://www.gnu.org.
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HISTORY
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--------------------------------------------------------------------------------
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11/24/98 JSB Created
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07/23/99 TP Added implementation of 1959 Standard Atmosphere
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Moved calculation of Mach number to FGTranslation
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********************************************************************************
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SENTRY
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*******************************************************************************/
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#ifndef FGAtmosphere_H
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#define FGAtmosphere_H
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/*******************************************************************************
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INCLUDES
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*******************************************************************************/
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#include "FGModel.h"
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/*******************************************************************************
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COMMENTS, REFERENCES, and NOTES
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********************************************************************************
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[1] Anderson, John D. "Introduction to Flight, Third Edition", McGraw-Hill,
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1989, ISBN 0-07-001641-0
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/*******************************************************************************
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CLASS DECLARATION
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*******************************************************************************/
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using namespace std;
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class FGAtmosphere : public FGModel
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{
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public:
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FGAtmosphere(FGFDMExec*);
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~FGAtmosphere(void);
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bool Run(void);
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inline float Getrho(void) {return rho;}
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float CalcRho(float altitude);
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inline float GetTemperature(void){return temperature;}
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inline float GetDensity(void) {return density;} // use only after Run() has been called
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inline float GetPressure(void) {return pressure;}
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inline float GetSoundSpeed(void) {return soundspeed;}
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float GetTemperature(float altitude); //Rankine, altitude in feet
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float GetDensity(float altitude); //slugs/ft^3
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float GetPressure(float altitude); //lbs/ft^2
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float GetSoundSpeed(float altitude); //ft/s
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protected:
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private:
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float rho;
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float h;
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float temperature;
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float pressure;
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float density;
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float soundspeed;
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void Calculate(void);
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};
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/******************************************************************************/
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#endif
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