/*******************************************************************************
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+
Header: FGAtmosphere.h
Author: Jon Berndt
Implementation of 1959 Standard Atmosphere added by Tony Peden
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
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.
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+
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 General Public License for more
details.
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+
You should have received a copy of the GNU 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.
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+
Further information about the GNU General Public License can also be found on
the world wide web at http://www.gnu.org.
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+
HISTORY
--------------------------------------------------------------------------------
11/24/98 JSB Created
07/23/99 TP Added implementation of 1959 Standard Atmosphere
Moved calculation of Mach number to FGTranslation
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+
+
********************************************************************************
SENTRY
*******************************************************************************/
*******************************************************************************/
#include "FGModel.h"
-
+#include "FGMatrix.h"
/*******************************************************************************
COMMENTS, REFERENCES, and NOTES
********************************************************************************
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+
[1] Anderson, John D. "Introduction to Flight, Third Edition", McGraw-Hill,
1989, ISBN 0-07-001641-0
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+
*******************************************************************************
CLASS DECLARATION
*******************************************************************************/
-
-using namespace std;
-
-class FGAtmosphere : public FGModel
-{
+class FGAtmosphere : public FGModel {
public:
FGAtmosphere(FGFDMExec*);
~FGAtmosphere(void);
bool Run(void);
- inline float Getrho(void) {return density;}
- float CalcRho(float altitude);
-
- inline float GetTemperature(void){return temperature;}
+ inline float GetTemperature(void) {return temperature;}
inline float GetDensity(void) {return density;} // use only after Run() has been called
inline float GetPressure(void) {return pressure;}
inline float GetSoundSpeed(void) {return soundspeed;}
- float GetTemperature(float altitude); //Rankine, altitude in feet
- float GetDensity(float altitude); //slugs/ft^3
- float GetPressure(float altitude); //lbs/ft^2
- float GetSoundSpeed(float altitude); //ft/s
+ inline float GetTemperatureSL(void) { return SLtemperature; } //Rankine, altitude in feet
+ inline float GetDensitySL(void) { return SLdensity; } //slugs/ft^3
+ inline float GetPressureSL(void) { return SLpressure; } //lbs/ft^2
+ inline float GetSoundSpeedSL(void) { return SLsoundspeed; } //ft/s
+
+ inline float GetTemperatureRatio(void) { return temperature/SLtemperature; }
+ inline float GetDensityRatio(void) { return density/SLdensity; }
+ inline float GetPressureRatio(void) { return pressure/SLpressure; }
+ inline float GetSoundSpeedRatio(void) { return soundspeed/SLsoundspeed; }
+
+ inline void UseExternal(void) { useExternal=true; }
+ inline void UseInternal(void) { useExternal=false; } //this is the default
+
+ inline void SetExTemperature(float t) { exTemperature=t; }
+ inline void SetExDensity(float d) { exDensity=d; }
+ inline void SetExPressure(float p) { exPressure=p; }
+
+ inline void SetWindNED(float wN, float wE, float wD) { vWindNED(1)=wN; vWindNED(2)=wE; vWindNED(3)=wD;}
+
+ inline float GetWindN(void) { return vWindNED(1); }
+ inline float GetWindE(void) { return vWindNED(2); }
+ inline float GetWindD(void) { return vWindNED(3); }
+
+ inline FGColumnVector GetWindUVW(void) { return vWindUVW; }
protected:
float rho;
float h;
- float temperature,T;
- float pressure,p;
- float density,rhos;
- float soundspeed,a;
- void Calculate(float altitude);
+ float SLtemperature,SLdensity,SLpressure,SLsoundspeed;
+ float temperature,density,pressure,soundspeed;
+ bool useExternal;
+ float exTemperature,exDensity,exPressure;
+ FGColumnVector vWindNED,vWindUVW;
+ void Calculate(float altitude);
};
+
+
/******************************************************************************/
#endif