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flightgear/src/FDM/YASim/YASim.hxx

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Initial revision of Andy Ross's YASim code. This is (Y)et (A)nother Flight Dynamics (Sim)ulator. Basically, this is a rough, first cut of a "different take" on FDM design. It's intended to be very simple to use, producing reasonable results for aircraft of all sorts and sizes, while maintaining simulation plausibility even in odd flight conditions like spins and aerobatics. It's at the point now where one can actually fly the planes around.
2001-12-01 06:22:24 +00:00
#ifndef _YASIM_HXX
#define _YASIM_HXX
#include <FDM/flight.hxx>
namespace yasim { class FGFDM; };
class YASim : public FGInterface {
public:
YASim(double dt);
Maik Justus: I found a small conspicuity in YASim. The destructor of the fdm was never called, therefore a modification of the heli fdm (not in cvs) did not work after reset (I tie some properties and untie them in the destructor, but the destructor was not called and the tieing failed after reset. I don't know if any other parts of YASim need their destructors, at least it wastes memory. Another small fix I have made to the turbulence.cpp. The code needed, that (a-floor(a)) is >=0 and <1. This is analytical correct, but numerical only for "small" values. In normal fg-operation a in this function is always small, but with unrealistic parameters in the aircraft config file it is not and then fg crashes (instead a crash of the aircraft or cataputling it far away).
2006-12-09 20:37:59 +00:00
~YASim();
Initial revision of Andy Ross's YASim code. This is (Y)et (A)nother Flight Dynamics (Sim)ulator. Basically, this is a rough, first cut of a "different take" on FDM design. It's intended to be very simple to use, producing reasonable results for aircraft of all sorts and sizes, while maintaining simulation plausibility even in odd flight conditions like spins and aerobatics. It's at the point now where one can actually fly the planes around.
2001-12-01 06:22:24 +00:00
// Load externally set stuff into the FDM
virtual void init();
Latest YASim changes.
2001-12-24 13:54:03 +00:00
virtual void bind();
Initial revision of Andy Ross's YASim code. This is (Y)et (A)nother Flight Dynamics (Sim)ulator. Basically, this is a rough, first cut of a "different take" on FDM design. It's intended to be very simple to use, producing reasonable results for aircraft of all sorts and sizes, while maintaining simulation plausibility even in odd flight conditions like spins and aerobatics. It's at the point now where one can actually fly the planes around.
2001-12-01 06:22:24 +00:00
// Run an iteration
Major overhaul: - changed FGSubsystem::update(int) to FGSubsystem::update(delta_time_sec); the argument is now delta time in seconds rather than milliseconds - added FGSubsystem::suspend(), FGSubsystem::suspend(bool), FGSubsystem::resume(), and FGSubsystem::is_suspended(), all with default implementations; is_suspended takes account of the master freeze as well as the subsystem's individual suspended state - the FDMs now use the delta time argument the same as the rest of FlightGear; formerly, main.cxx made a special case and passed a multiloop argument - FDMs now calculate multiloop internally instead of relying on main.cxx There are probably some problems -- I've done basic testing with the major FDMs and subsystems, but we'll probably need a few weeks to sniff out bugs.
2002-05-11 16:28:50 +00:00
virtual void update(double dt);
Initial revision of Andy Ross's YASim code. This is (Y)et (A)nother Flight Dynamics (Sim)ulator. Basically, this is a rough, first cut of a "different take" on FDM design. It's intended to be very simple to use, producing reasonable results for aircraft of all sorts and sizes, while maintaining simulation plausibility even in odd flight conditions like spins and aerobatics. It's at the point now where one can actually fly the planes around.
2001-12-01 06:22:24 +00:00
private:
Begin supporting a starting speed for YASim: - NED and UVW are working correctly - knots is giving true airspeed instead of calibrated airspeed - mach is not working at all This desperately needs a trimming routine.
2003-02-22 20:29:43 +00:00
Initial revision of Andy Ross's YASim code. This is (Y)et (A)nother Flight Dynamics (Sim)ulator. Basically, this is a rough, first cut of a "different take" on FDM design. It's intended to be very simple to use, producing reasonable results for aircraft of all sorts and sizes, while maintaining simulation plausibility even in odd flight conditions like spins and aerobatics. It's at the point now where one can actually fly the planes around.
2001-12-01 06:22:24 +00:00
void report();
void copyFromYASim();
void copyToYASim(bool copyState);
yasim::FGFDM* _fdm;
float _dt;
Fix some sim time issues with the locations of the ground cache and the queries in there. Modified Files: flight.cxx flight.hxx groundcache.cxx groundcache.hxx JSBSim/JSBSim.cxx YASim/YASim.cxx YASim/YASim.hxx
2009-03-15 11:26:31 +00:00
double _simTime;
Begin supporting a starting speed for YASim: - NED and UVW are working correctly - knots is giving true airspeed instead of calibrated airspeed - mach is not working at all This desperately needs a trimming routine.
2003-02-22 20:29:43 +00:00
enum {
NED,
UVW,
KNOTS,
MACH
} _speed_set;
Initial revision of Andy Ross's YASim code. This is (Y)et (A)nother Flight Dynamics (Sim)ulator. Basically, this is a rough, first cut of a "different take" on FDM design. It's intended to be very simple to use, producing reasonable results for aircraft of all sorts and sizes, while maintaining simulation plausibility even in odd flight conditions like spins and aerobatics. It's at the point now where one can actually fly the planes around.
2001-12-01 06:22:24 +00:00
};
#endif // _YASIM_HXX
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