110 lines
3.8 KiB
C++
110 lines
3.8 KiB
C++
/*******************************************************************************
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Header: FGInitialCondition.h
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Author: Tony Peden
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Date started: 7/1/99
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------------- Copyright (C) 1999 Anthony K. Peden (apeden@earthlink.net) -------------
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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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7/1/99 TP Created
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FUNCTIONAL DESCRIPTION
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--------------------------------------------------------------------------------
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The purpose of this class is to take a set of initial conditions and provide
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a kinematically consistent set of body axis velocity components, euler
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angles, and altitude. This class does not attempt to trim the model i.e.
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the sim will most likely start in a very dynamic state (unless, of course,
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you have chosen your IC's wisely) even after setting it up with this class.
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CAVEAT: This class makes use of alpha=theta-gamma. This means that setting
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any of the three with this class is only valid for steady state
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(all accels zero) and zero pitch rate. One example where this
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would produce invalid results is setting up for a trim in a pull-up
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or pushover (both have nonzero pitch rate). Maybe someday...
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********************************************************************************
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SENTRY
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*******************************************************************************/
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#ifndef FGINITIALCONDITION_H
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#define FGINITIALCONDITION_H
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/*******************************************************************************
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INCLUDES
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*******************************************************************************/
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#include "FGFDMExec.h"
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#include "FGAtmosphere.h"
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/*******************************************************************************
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CLASS DECLARATION
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*******************************************************************************/
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class FGInitialCondition
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{
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public:
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FGInitialCondition(FGFDMExec *fdmex);
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~FGInitialCondition(void);
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void SetVcalibratedKtsIC(float tt);
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void SetVtrueKtsIC(float tt);
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void SetMachIC(float tt);
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void SetAltitudeFtIC(float tt);
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void SetFlightPathAngleDegIC(float tt); //"vertical" flight path, solve for alpha using speed
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//void SetClimbRateFpmIC(float tt); //overwrite gamma
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void SetAlphaDegIC(float tt); //use currently stored gamma
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void SetBetaDegIC(float tt);
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void SetRollAngleDegIC(float tt);
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void SetPitchAngleDegIC(float tt); //use currently stored gamma
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void SetHeadingDegIC(float tt);
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void SetLatitudeDegIC(float tt);
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void SetLongitudeDegIC(float tt);
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float GetUBodyFpsIC(void);
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float GetVBodyFpsIC(void);
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float GetWBodyFpsIC(void);
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float GetThetaRadIC(void);
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float GetPhiRadIC(void);
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float GetPsiRadIC(void);
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float GetLatitudeRadIC(void);
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float GetLongitudeRadIC(void);
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float GetAltitudeFtIC(void);
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private:
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float vt,vc;
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float alpha,beta,gamma,theta,phi,psi;
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float mach;
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float altitude,hdot;
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float u,v,w;
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float latitude,longitude;
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FGAtmosphere *atm;
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};
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#endif
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