1 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
7 ------------- Copyright (C) 2000 Jon S. Berndt (jon@jsbsim.org) -------------
9 This program is free software; you can redistribute it and/or modify it under
10 the terms of the GNU Lesser General Public License as published by the Free Software
11 Foundation; either version 2 of the License, or (at your option) any later
14 This program is distributed in the hope that it will be useful, but WITHOUT
15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
16 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
19 You should have received a copy of the GNU Lesser General Public License along with
20 this program; if not, write to the Free Software Foundation, Inc., 59 Temple
21 Place - Suite 330, Boston, MA 02111-1307, USA.
23 Further information about the GNU Lesser General Public License can also be found on
24 the world wide web at http://www.gnu.org.
27 --------------------------------------------------------------------------------
30 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
32 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
37 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
39 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
42 #include "input_output/FGXMLElement.h"
43 #include "input_output/FGPropertyManager.h"
44 #include "math/FGColumnVector3.h"
47 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
49 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
51 #define ID_THRUSTER "$Id$"
53 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
55 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
59 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
61 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
63 /** Base class for specific thrusting devices such as propellers, nozzles, etc.
65 <h3>reverser angle:</h3>
67 "Reverser angle" as used here is a way to manipulate the thrust vector,
68 along the thrust axis ONLY, during run time. This should not be confused
69 with a thrust vectoring nozzle. The angle is defined in radians, and is
70 used thus: Final_thrust = cosine( reverser_angle ) * unmodified_thrust.
71 Therefore a reverser angle of 0 results in no change, and a reverser angle
72 of 3.14 (pi) results in a completely reversed thrust vector. An angle of
73 1.57 (pi/2) results in no thrust at all.
79 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
81 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
83 class FGThruster : public FGForce {
87 FGThruster(FGFDMExec *FDMExec, Element *el, int num );
89 virtual ~FGThruster();
91 enum eType {ttNozzle, ttRotor, ttPropeller, ttDirect};
93 virtual double Calculate(double tt) {
94 Thrust = cos(ReverserAngle)*tt;
98 void SetName(string name) {Name = name;}
99 virtual void SetRPM(double rpm) {};
100 virtual double GetPowerRequired(void) {return 0.0;}
101 virtual void SetdeltaT(double dt) {deltaT = dt;}
102 double GetThrust(void) const {return Thrust;}
103 eType GetType(void) {return Type;}
104 string GetName(void) {return Name;}
105 void SetReverserAngle(double angle) {ReverserAngle = angle;}
106 double GetReverserAngle(void) const {return ReverserAngle;}
107 virtual double GetRPM(void) const { return 0.0; };
108 double GetGearRatio(void) {return GearRatio; }
109 virtual string GetThrusterLabels(int id, string delimeter);
110 virtual string GetThrusterValues(int id, string delimeter);
116 double PowerRequired;
120 double ReverserAngle;
122 FGPropertyManager* PropertyManager;
123 virtual void Debug(int from);
126 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%