-/*******************************************************************************
+/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Header: FGTank.h
Author: Jon S. Berndt
--------------------------------------------------------------------------------
01/21/99 JSB Created
-********************************************************************************
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
SENTRY
-*******************************************************************************/
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
#ifndef FGTank_H
#define FGTank_H
-/*******************************************************************************
+/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
INCLUDES
-*******************************************************************************/
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
+
+#include "FGJSBBase.h"
+#include "FGConfigFile.h"
+#include "FGColumnVector3.h"
+#include "FGAuxiliary.h"
#ifdef FGFS
# include <simgear/compiler.h>
# include STL_STRING
- FG_USING_STD(string);
+ SG_USING_STD(string);
+ SG_USING_STD(cerr);
+ SG_USING_STD(endl);
+ SG_USING_STD(cout);
#else
-# include <string>
+# include <string>
+ using std::string;
+# if !defined(sgi) || defined(__GNUC__) || (_COMPILER_VERSION >= 740)
+ using std::cerr;
+ using std::endl;
+ using std::cout;
+# endif
#endif
-#include "FGConfigFile.h"
-
-/*******************************************************************************
-DEFINES
-*******************************************************************************/
-
-using namespace std;
-
-/*******************************************************************************
+/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+DEFINITIONS
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
+
+#define ID_TANK "$Id$"
+
+/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+FORWARD DECLARATIONS
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
+
+namespace JSBSim {
+
+/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+CLASS DOCUMENTATION
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
+
+/** Models a fuel tank.
+ @author Jon Berndt
+ @see Akbar, Raza et al. "A Simple Analysis of Fuel Addition to the CWT of
+ 747", California Institute of Technology, 1998
+<P>
+ Fuel temperature is calculated using the following assumptions:
+<P>
+ Fuel temperature will only be calculated for tanks which have an initial fuel
+ temperature specified in the configuration file.
+<P>
+ The surface area of the tank is estimated from the capacity in pounds. It
+ is assumed that the tank is a wing tank with dimensions h by 4h by 10h. The
+ volume of the tank is then 40(h)(h)(h). The area of the upper or lower
+ surface is then 40(h)(h). The volume is also equal to the capacity divided
+ by 49.368 lbs/cu-ft, for jet fuel. The surface area of one side can then be
+ derived from the tank's capacity.
+<P>
+ The heat capacity of jet fuel is assumed to be 900 Joules/lbm/K, and the
+ heat transfer factor of the tank is 1.115 Watts/sq-ft/K.
+<P>
+Configuration File Format
+<pre>
+\<AC_TANK TYPE="\<FUEL | OXIDIZER>" NUMBER="\<n>">
+ XLOC \<x location>
+ YLOC \<y location>
+ ZLOC \<z location>
+ RADIUS \<radius>
+ CAPACITY \<capacity>
+ CONTENTS \<contents>
+ TEMPERATURE \<fuel temperature>
+\</AC_TANK>
+</pre>
+Definition of the tank configuration file parameters:
+<pre>
+<b>TYPE</b> - One of FUEL or OXIDIZER.
+<b>XLOC</b> - Location of tank on aircraft's x-axis, inches.
+<b>YLOC</b> - Location of tank on aircraft's y-axis, inches.
+<b>ZLOC</b> - Location of tank on aircraft's z-axis, inches.
+<b>RADIUS</b> - Equivalent radius of tank, inches, for modeling slosh.
+<b>CAPACITY</b> - Capacity in pounds.
+<b>CONTENTS</b> - Initial contents in pounds.
+<b>TEMPERATURE</b> - Initial temperature in degrees Fahrenheit.
+</pre>
+ */
+
+/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
CLASS DECLARATION
-*******************************************************************************/
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
-class FGTank
+class FGTank : public FGJSBBase
{
public:
- FGTank(FGConfigFile*);
- ~FGTank(void);
+ FGTank(FGConfigFile*, FGFDMExec*);
+ ~FGTank();
- float Reduce(float);
+ double Drain(double);
+ double Calculate(double dt);
int GetType(void) {return Type;}
bool GetSelected(void) {return Selected;}
- float GetPctFull(void) {return PctFull;}
- float GetContents(void) {return Contents;}
- float inline GetX(void) {return X;}
- float inline GetY(void) {return Y;}
- float inline GetZ(void) {return Z;}
+ double GetPctFull(void) {return PctFull;}
+ double GetContents(void) {return Contents;}
+ double GetTemperature_degC(void) {return Temperature;}
+ double GetTemperature(void) {return CelsiusToFahrenheit(Temperature);}
+ const FGColumnVector3& GetXYZ(void) {return vXYZ;}
+ double GetXYZ(int idx) {return vXYZ(idx);}
+
+ double Fill(double amount);
+ void SetContents(double amount);
+ void SetTemperature(double temp) { Temperature = temp; }
enum TankType {ttUNKNOWN, ttFUEL, ttOXIDIZER};
private:
TankType Type;
- float X, Y, Z;
- float Capacity;
- float Radius;
- float PctFull;
- float Contents;
+ string type;
+ FGColumnVector3 vXYZ;
+ double Capacity;
+ double Radius;
+ double PctFull;
+ double Contents;
+ double Area;
+ double Temperature;
bool Selected;
-
-protected:
+ FGAuxiliary* Auxiliary;
+ void Debug(int from);
};
-
-/******************************************************************************/
+}
+//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
#endif
+
projects / flightgear.git / blobdiff