11/24/98 JSB Created
07/23/99 TP Added implementation of 1959 Standard Atmosphere
Moved calculation of Mach number to FGTranslation
+ Updated to '76 model
********************************************************************************
*******************************************************************************/
#include "FGModel.h"
-#include "FGMatrix.h"
+#include "FGMatrix33.h"
+#include "FGColumnVector3.h"
+#include "FGColumnVector4.h"
-/*******************************************************************************
-COMMENTS, REFERENCES, and NOTES
-********************************************************************************
-
-[1] Anderson, John D. "Introduction to Flight, Third Edition", McGraw-Hill,
- 1989, ISBN 0-07-001641-0
-
-*******************************************************************************
-CLASS DECLARATION
-*******************************************************************************/
-
-class FGAtmosphere : public FGModel {
-public:
-
- FGAtmosphere(FGFDMExec*);
- ~FGAtmosphere(void);
- bool Run(void);
+/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+DEFINITIONS
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
- 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;}
+#define ID_ATMOSPHERE "$Id$"
- 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
+/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+FORWARD DECLARATIONS
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
- 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; }
+/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+COMMENTS, REFERENCES, and NOTES [use "class documentation" below for API docs]
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- inline void UseExternal(void) { useExternal=true; }
- inline void UseInternal(void) { useExternal=false; } //this is the default
+[1] Anderson, John D. "Introduction to Flight, Third Edition", McGraw-Hill,
+ 1989, ISBN 0-07-001641-0
- inline void SetExTemperature(float t) { exTemperature=t; }
- inline void SetExDensity(float d) { exDensity=d; }
- inline void SetExPressure(float p) { exPressure=p; }
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+CLASS DOCUMENTATION
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
- inline void SetWindNED(float wN, float wE, float wD) { vWindNED(1)=wN; vWindNED(2)=wE; vWindNED(3)=wD;}
+/** Models the standard atmosphere.
+ @author Tony Peden, Jon Berndt
+ @version $Id$
+ @see <a href="http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/jsbsim/JSBSim/FGAtmosphere.h?rev=HEAD&content-type=text/vnd.viewcvs-markup">
+ Header File </a>
+ @see <a href="http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/jsbsim/JSBSim/FGAtmosphere.cpp?rev=HEAD&content-type=text/vnd.viewcvs-markup">
+ Source File </a>
+*/
- inline float GetWindN(void) { return vWindNED(1); }
- inline float GetWindE(void) { return vWindNED(2); }
- inline float GetWindD(void) { return vWindNED(3); }
+/******************************************************************************
+CLASS DECLARATION
+*******************************************************************************/
- inline FGColumnVector GetWindUVW(void) { return vWindUVW; }
+class FGAtmosphere : public FGModel {
+public:
-protected:
+ /// Constructor
+ FGAtmosphere(FGFDMExec*);
+ /// Destructor
+ ~FGAtmosphere();
+ /** Runs the Atmosphere model; called by the Executive
+ @return false if no error */
+ bool Run(void);
+ bool InitModel(void);
+
+ /// Returns the temperature in degrees Rankine.
+ inline double GetTemperature(void) const {return *temperature;}
+ /** Returns the density in slugs/ft^3.
+ <i>This function may <b>only</b> be used if Run() is called first.</i> */
+ inline double GetDensity(void) const {return *density;}
+ /// Returns the pressure in psf.
+ inline double GetPressure(void) const {return *pressure;}
+ /// Returns the speed of sound in ft/sec.
+ inline double GetSoundSpeed(void) const {return soundspeed;}
+
+ /// Returns the sea level temperature in degrees Rankine.
+ inline double GetTemperatureSL(void) const { return SLtemperature; }
+ /// Returns the sea level density in slugs/ft^3
+ inline double GetDensitySL(void) const { return SLdensity; }
+ /// Returns the sea level pressure in psf.
+ inline double GetPressureSL(void) const { return SLpressure; }
+ /// Returns the sea level speed of sound in ft/sec.
+ inline double GetSoundSpeedSL(void) const { return SLsoundspeed; }
+
+ /// Returns the ratio of at-altitude temperature over the sea level value.
+ inline double GetTemperatureRatio(void) const { return (*temperature)*rSLtemperature; }
+ /// Returns the ratio of at-altitude density over the sea level value.
+ inline double GetDensityRatio(void) const { return (*density)*rSLdensity; }
+ /// Returns the ratio of at-altitude pressure over the sea level value.
+ inline double GetPressureRatio(void) const { return (*pressure)*rSLpressure; }
+ /// Returns the ratio of at-altitude sound speed over the sea level value.
+ inline double GetSoundSpeedRatio(void) const { return soundspeed*rSLsoundspeed; }
+
+ /// Tells the simulator to use an externally calculated atmosphere model.
+ void UseExternal(void);
+ /// Tells the simulator to use the internal atmosphere model.
+ void UseInternal(void); //this is the default
+ /// Gets the boolean that tells if the external atmosphere model is being used.
+ bool External(void) { return useExternal; }
+
+ /// Provides the external atmosphere model with an interface to set the temperature.
+ inline void SetExTemperature(double t) { exTemperature=t; }
+ /// Provides the external atmosphere model with an interface to set the density.
+ inline void SetExDensity(double d) { exDensity=d; }
+ /// Provides the external atmosphere model with an interface to set the pressure.
+ inline void SetExPressure(double p) { exPressure=p; }
+
+ /// Sets the wind components in NED frame.
+ inline void SetWindNED(double wN, double wE, double wD) { vWindNED(1)=wN; vWindNED(2)=wE; vWindNED(3)=wD;}
+
+ /// Retrieves the wind components in NED frame.
+ inline FGColumnVector3& GetWindNED(void) { return vWindNED; }
+
+ /** Retrieves the wind direction. The direction is defined as north=0 and
+ increases counterclockwise. The wind heading is returned in radians.*/
+ inline double GetWindPsi(void) const { return psiw; }
+
+ inline void SetTurbGain(double tt) {TurbGain = tt;}
+
+ inline double GetTurbPQR(int idx) const {return vTurbPQR(idx);}
+ inline FGColumnVector3& GetTurbPQR(void) {return vTurbPQR;}
+
+ void bind(void);
+ void unbind(void);
+
+
private:
- float rho;
+ double rho;
- float h;
- float SLtemperature,SLdensity,SLpressure,SLsoundspeed;
- float temperature,density,pressure,soundspeed;
- bool useExternal;
- float exTemperature,exDensity,exPressure;
- FGColumnVector vWindNED,vWindUVW;
-
- void Calculate(float altitude);
+ enum tType {ttBerndt, ttNone} turbType;
+ int lastIndex;
+ double h;
+ double htab[8];
+ double SLtemperature,SLdensity,SLpressure,SLsoundspeed;
+ double rSLtemperature,rSLdensity,rSLpressure,rSLsoundspeed; //reciprocals
+ double *temperature,*density,*pressure;
+ double soundspeed;
+ bool useExternal;
+ double exTemperature,exDensity,exPressure;
+ double intTemperature, intDensity, intPressure;
+
+ double MagnitudedAccelDt, MagnitudeAccel, Magnitude;
+ double TurbGain;
+ FGColumnVector3 vDirectiondAccelDt;
+ FGColumnVector3 vDirectionAccel;
+ FGColumnVector3 vDirection;
+ FGColumnVector3 vTurbulence;
+ FGColumnVector3 vTurbulenceGrad;
+ FGColumnVector3 vBodyTurbGrad;
+ FGColumnVector3 vTurbPQR;
+
+ FGColumnVector3 vWindNED;
+ double psiw;
+
+ void Calculate(double altitude);
+ void Turbulence(void);
+ void Debug(int from);
};
-
-
/******************************************************************************/
#endif
+
projects / flightgear.git / blobdiff