// flight.c -- a general interface to the various flight models // // Written by Curtis Olson, started May 1997. // // Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com // // This program is free software; you can redistribute it and/or // modify it under the terms of the GNU General Public License as // published by the Free Software Foundation; either version 2 of the // License, or (at your option) any later version. // // This program is distributed in the hope that it will be useful, but // WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program; if not, write to the Free Software // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. // // $Id$ #include #include #include #include #include #include #include #include
#include "External.hxx" #include "flight.hxx" #include "JSBSim.hxx" #include "LaRCsim.hxx" #include "Balloon.h" // base_fdm_state is the internal state that is updated in integer // multiples of "dt". This leads to "jitter" with respect to the real // world time, so we introduce cur_fdm_state which is extrapolated by // the difference between sim time and real world time FGInterface *cur_fdm_state; FGInterface base_fdm_state; inline void init_vec(FG_VECTOR_3 vec) { vec[0] = 0.0; vec[1] = 0.0; vec[2] = 0.0; } FGEngInterface::FGEngInterface(void) { // inputs Throttle=0; Mixture=0; Prop_Advance=0; // outputs RPM=0; Manifold_Pressure=0; MaxHP=0; Percentage_Power=0; EGT=0; prop_thrust=0; } FGEngInterface::~FGEngInterface(void) { } // Constructor FGInterface::FGInterface(void) { init_vec( d_pilot_rp_body_v ); init_vec( d_cg_rp_body_v ); init_vec( f_body_total_v ); init_vec( f_local_total_v ); init_vec( f_aero_v ); init_vec( f_engine_v ); init_vec( f_gear_v ); init_vec( m_total_rp_v ); init_vec( m_total_cg_v ); init_vec( m_aero_v ); init_vec( m_engine_v ); init_vec( m_gear_v ); init_vec( v_dot_local_v ); init_vec( v_dot_body_v ); init_vec( a_cg_body_v ); init_vec( a_pilot_body_v ); init_vec( n_cg_body_v ); init_vec( n_pilot_body_v ); init_vec( omega_dot_body_v ); init_vec( v_local_v ); init_vec( v_local_rel_ground_v ); init_vec( v_local_airmass_v ); init_vec( v_local_rel_airmass_v ); init_vec( v_local_gust_v ); init_vec( v_wind_body_v ); init_vec( omega_body_v ); init_vec( omega_local_v ); init_vec( omega_total_v ); init_vec( euler_rates_v ); init_vec( geocentric_rates_v ); init_vec( geocentric_position_v ); init_vec( geodetic_position_v ); init_vec( euler_angles_v ); init_vec( d_cg_rwy_local_v ); init_vec( d_cg_rwy_rwy_v ); init_vec( d_pilot_rwy_local_v ); init_vec( d_pilot_rwy_rwy_v ); init_vec( t_local_to_body_m[0] ); init_vec( t_local_to_body_m[1] ); init_vec( t_local_to_body_m[2] ); mass=i_xx=i_yy=i_zz=i_xz=0; nlf=0; v_rel_wind=v_true_kts=v_rel_ground=v_inertial=0; v_ground_speed=v_equiv=v_equiv_kts=0; v_calibrated=v_calibrated_kts=0; gravity=0; centrifugal_relief=0; alpha=beta=alpha_dot=beta_dot=0; cos_alpha=sin_alpha=cos_beta=sin_beta=0; cos_phi=sin_phi=cos_theta=sin_theta=cos_psi=sin_psi=0; gamma_vert_rad=gamma_horiz_rad=0; sigma=density=v_sound=mach_number=0; static_pressure=total_pressure=impact_pressure=0; dynamic_pressure=0; static_temperature=total_temperature=0; sea_level_radius=earth_position_angle=0; runway_altitude=runway_latitude=runway_longitude=0; runway_heading=0; radius_to_rwy=0; climb_rate=0; sin_lat_geocentric=cos_lat_geocentric=0; sin_latitude=cos_latitude=0; sin_longitude=cos_longitude=0; altitude_agl=0; } // Destructor FGInterface::~FGInterface() { } bool FGInterface::init( double dt ) { cout << "dummy init() ... SHOULDN'T BE CALLED!" << endl; return false; } bool FGInterface::update( int multi_loop ) { cout << "dummy update() ... SHOULDN'T BE CALLED!" << endl; return false; } void FGInterface::_updatePosition( double lat_geoc, double lon, double alt ) { double lat_geod, tmp_alt, sl_radius1, sl_radius2, tmp_lat_geoc; sgGeocToGeod( lat_geoc, EQUATORIAL_RADIUS_M + alt * FEET_TO_METER, &lat_geod, &tmp_alt, &sl_radius1 ); sgGeodToGeoc( lat_geod, alt * FEET_TO_METER, &sl_radius2, &tmp_lat_geoc ); FG_LOG( FG_FLIGHT, FG_DEBUG, "lon = " << lon << " lat_geod = " << lat_geod << " lat_geoc = " << lat_geoc << " alt = " << alt << " tmp_alt = " << tmp_alt * METER_TO_FEET << " sl_radius1 = " << sl_radius1 * METER_TO_FEET << " sl_radius2 = " << sl_radius2 * METER_TO_FEET << " Equator = " << EQUATORIAL_RADIUS_FT ); _set_Geocentric_Position( lat_geoc, lon, sl_radius2 * METER_TO_FEET + alt ); _set_Geodetic_Position( lat_geod, lon, alt ); _set_Sea_level_radius( sl_radius2 * METER_TO_FEET ); _set_Runway_altitude( scenery.cur_elev*METERS_TO_FEET ); _set_sin_lat_geocentric( lat_geoc ); _set_cos_lat_geocentric( lat_geoc ); _set_sin_cos_longitude( lon ); _set_sin_cos_latitude( lat_geod ); /* Norman's code for slope of the terrain */ /* needs to be tested -- get it on the HUD and taxi around */ /* double *tnorm = scenery.cur_normal; double sy = sin ( -get_Psi() ) ; double cy = cos ( -get_Psi() ) ; double phitb, thetatb, psitb; if(tnorm[1] != 0.0) { psitb = -atan2 ( tnorm[0], tnorm[1] ); } if(tnorm[2] != 0.0) { thetatb = atan2 ( tnorm[0] * cy - tnorm[1] * sy, tnorm[2] ); phitb = -atan2 ( tnorm[1] * cy + tnorm[0] * sy, tnorm[2] ); } _set_terrain_slope(phitb, thetatb, psitb) */ } // Extrapolate fdm based on time_offset (in usec) void FGInterface::extrapolate( int time_offset ) { double dt = time_offset / 1000000.0; // -dw- metrowerks complains about ambiguous access, not critical // to keep this ;) #ifndef __MWERKS__ cout << "extrapolating FDM by dt = " << dt << endl; #endif double lat = geodetic_position_v[0] + geocentric_rates_v[0] * dt; double lat_geoc = geocentric_position_v[0] + geocentric_rates_v[0] * dt; double lon = geodetic_position_v[1] + geocentric_rates_v[1] * dt; double lon_geoc = geocentric_position_v[1] + geocentric_rates_v[1] * dt; double alt = geodetic_position_v[2] + geocentric_rates_v[2] * dt; double radius = geocentric_position_v[2] + geocentric_rates_v[2] * dt; geodetic_position_v[0] = lat; geocentric_position_v[0] = lat_geoc; geodetic_position_v[1] = lon; geocentric_position_v[1] = lon_geoc; geodetic_position_v[2] = alt; geocentric_position_v[2] = radius; } // Set the altitude (force) void fgFDMForceAltitude(int model, double alt_meters) { double sea_level_radius_meters; double lat_geoc; // Set the FG variables first sgGeodToGeoc( base_fdm_state.get_Latitude(), alt_meters, &sea_level_radius_meters, &lat_geoc); base_fdm_state.set_Altitude( alt_meters * METER_TO_FEET ); base_fdm_state.set_Sea_level_radius( sea_level_radius_meters * METER_TO_FEET ); // additional work needed for some flight models if ( model == FGInterface::FG_LARCSIM ) { ls_ForceAltitude( base_fdm_state.get_Altitude() ); } } // Set the local ground elevation void fgFDMSetGroundElevation(int model, double ground_meters) { FG_LOG( FG_FLIGHT,FG_INFO, "fgFDMSetGroundElevation: " << ground_meters*METER_TO_FEET ); base_fdm_state.set_Runway_altitude( ground_meters * METER_TO_FEET ); cur_fdm_state->set_Runway_altitude( ground_meters * METER_TO_FEET ); } // Positions void FGInterface::set_Latitude(double lat) { geodetic_position_v[0] = lat; } void FGInterface::set_Longitude(double lon) { geodetic_position_v[1] = lon; } void FGInterface::set_Altitude(double alt) { geodetic_position_v[2] = alt; } void FGInterface::set_AltitudeAGL(double altagl) { altitude_agl=altagl; } // Velocities void FGInterface::set_V_calibrated_kts(double vc) { v_calibrated_kts = vc; } void FGInterface::set_Mach_number(double mach) { mach_number = mach; } void FGInterface::set_Velocities_Local( double north, double east, double down ){ v_local_v[0] = north; v_local_v[1] = east; v_local_v[2] = down; } void FGInterface::set_Velocities_Wind_Body( double u, double v, double w){ v_wind_body_v[0] = u; v_wind_body_v[1] = v; v_wind_body_v[2] = w; } // Euler angles void FGInterface::set_Euler_Angles( double phi, double theta, double psi ) { euler_angles_v[0] = phi; euler_angles_v[1] = theta; euler_angles_v[2] = psi; } // Flight Path void FGInterface::set_Climb_Rate( double roc) { climb_rate = roc; } void FGInterface::set_Gamma_vert_rad( double gamma) { gamma_vert_rad = gamma; } // Earth void FGInterface::set_Sea_level_radius(double slr) { sea_level_radius = slr; } void FGInterface::set_Runway_altitude(double ralt) { runway_altitude = ralt; } void FGInterface::set_Static_pressure(double p) { static_pressure = p; } void FGInterface::set_Static_temperature(double T) { static_temperature = T; } void FGInterface::set_Density(double rho) { density = rho; } void FGInterface::set_Velocities_Local_Airmass (double wnorth, double weast, double wdown ) { v_local_airmass_v[0] = wnorth; v_local_airmass_v[1] = weast; v_local_airmass_v[2] = wdown; } void FGInterface::_busdump(void) { FG_LOG(FG_FLIGHT,FG_INFO,"d_pilot_rp_body_v[3]: " << d_pilot_rp_body_v[0] << ", " << d_pilot_rp_body_v[1] << ", " << d_pilot_rp_body_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"d_cg_rp_body_v[3]: " << d_cg_rp_body_v[0] << ", " << d_cg_rp_body_v[1] << ", " << d_cg_rp_body_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"f_body_total_v[3]: " << f_body_total_v[0] << ", " << f_body_total_v[1] << ", " << f_body_total_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"f_local_total_v[3]: " << f_local_total_v[0] << ", " << f_local_total_v[1] << ", " << f_local_total_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"f_aero_v[3]: " << f_aero_v[0] << ", " << f_aero_v[1] << ", " << f_aero_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"f_engine_v[3]: " << f_engine_v[0] << ", " << f_engine_v[1] << ", " << f_engine_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"f_gear_v[3]: " << f_gear_v[0] << ", " << f_gear_v[1] << ", " << f_gear_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"m_total_rp_v[3]: " << m_total_rp_v[0] << ", " << m_total_rp_v[1] << ", " << m_total_rp_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"m_total_cg_v[3]: " << m_total_cg_v[0] << ", " << m_total_cg_v[1] << ", " << m_total_cg_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"m_aero_v[3]: " << m_aero_v[0] << ", " << m_aero_v[1] << ", " << m_aero_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"m_engine_v[3]: " << m_engine_v[0] << ", " << m_engine_v[1] << ", " << m_engine_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"m_gear_v[3]: " << m_gear_v[0] << ", " << m_gear_v[1] << ", " << m_gear_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"v_dot_local_v[3]: " << v_dot_local_v[0] << ", " << v_dot_local_v[1] << ", " << v_dot_local_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"v_dot_body_v[3]: " << v_dot_body_v[0] << ", " << v_dot_body_v[1] << ", " << v_dot_body_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"a_cg_body_v[3]: " << a_cg_body_v[0] << ", " << a_cg_body_v[1] << ", " << a_cg_body_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"a_pilot_body_v[3]: " << a_pilot_body_v[0] << ", " << a_pilot_body_v[1] << ", " << a_pilot_body_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"n_cg_body_v[3]: " << n_cg_body_v[0] << ", " << n_cg_body_v[1] << ", " << n_cg_body_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"n_pilot_body_v[3]: " << n_pilot_body_v[0] << ", " << n_pilot_body_v[1] << ", " << n_pilot_body_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"omega_dot_body_v[3]: " << omega_dot_body_v[0] << ", " << omega_dot_body_v[1] << ", " << omega_dot_body_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"v_local_v[3]: " << v_local_v[0] << ", " << v_local_v[1] << ", " << v_local_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"v_local_rel_ground_v[3]: " << v_local_rel_ground_v[0] << ", " << v_local_rel_ground_v[1] << ", " << v_local_rel_ground_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"v_local_airmass_v[3]: " << v_local_airmass_v[0] << ", " << v_local_airmass_v[1] << ", " << v_local_airmass_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"v_local_rel_airmass_v[3]: " << v_local_rel_airmass_v[0] << ", " << v_local_rel_airmass_v[1] << ", " << v_local_rel_airmass_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"v_local_gust_v[3]: " << v_local_gust_v[0] << ", " << v_local_gust_v[1] << ", " << v_local_gust_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"v_wind_body_v[3]: " << v_wind_body_v[0] << ", " << v_wind_body_v[1] << ", " << v_wind_body_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"omega_body_v[3]: " << omega_body_v[0] << ", " << omega_body_v[1] << ", " << omega_body_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"omega_local_v[3]: " << omega_local_v[0] << ", " << omega_local_v[1] << ", " << omega_local_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"omega_total_v[3]: " << omega_total_v[0] << ", " << omega_total_v[1] << ", " << omega_total_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"euler_rates_v[3]: " << euler_rates_v[0] << ", " << euler_rates_v[1] << ", " << euler_rates_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"geocentric_rates_v[3]: " << geocentric_rates_v[0] << ", " << geocentric_rates_v[1] << ", " << geocentric_rates_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"geocentric_position_v[3]: " << geocentric_position_v[0] << ", " << geocentric_position_v[1] << ", " << geocentric_position_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"geodetic_position_v[3]: " << geodetic_position_v[0] << ", " << geodetic_position_v[1] << ", " << geodetic_position_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"euler_angles_v[3]: " << euler_angles_v[0] << ", " << euler_angles_v[1] << ", " << euler_angles_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"d_cg_rwy_local_v[3]: " << d_cg_rwy_local_v[0] << ", " << d_cg_rwy_local_v[1] << ", " << d_cg_rwy_local_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"d_cg_rwy_rwy_v[3]: " << d_cg_rwy_rwy_v[0] << ", " << d_cg_rwy_rwy_v[1] << ", " << d_cg_rwy_rwy_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"d_pilot_rwy_local_v[3]: " << d_pilot_rwy_local_v[0] << ", " << d_pilot_rwy_local_v[1] << ", " << d_pilot_rwy_local_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"d_pilot_rwy_rwy_v[3]: " << d_pilot_rwy_rwy_v[0] << ", " << d_pilot_rwy_rwy_v[1] << ", " << d_pilot_rwy_rwy_v[2]); FG_LOG(FG_FLIGHT,FG_INFO,"t_local_to_body_m[0][3]: " << t_local_to_body_m[0][0] << ", " << t_local_to_body_m[0][1] << ", " << t_local_to_body_m[0][2]); FG_LOG(FG_FLIGHT,FG_INFO,"t_local_to_body_m[1][3]: " << t_local_to_body_m[1][0] << ", " << t_local_to_body_m[1][1] << ", " << t_local_to_body_m[1][2]); FG_LOG(FG_FLIGHT,FG_INFO,"t_local_to_body_m[2][3]: " << t_local_to_body_m[2][0] << ", " << t_local_to_body_m[2][1] << ", " << t_local_to_body_m[2][2]); FG_LOG(FG_FLIGHT,FG_INFO,"mass: " << mass ); FG_LOG(FG_FLIGHT,FG_INFO,"i_xx: " << i_xx ); FG_LOG(FG_FLIGHT,FG_INFO,"i_yy: " << i_yy ); FG_LOG(FG_FLIGHT,FG_INFO,"i_zz: " << i_zz ); FG_LOG(FG_FLIGHT,FG_INFO,"i_xz: " << i_xz ); FG_LOG(FG_FLIGHT,FG_INFO,"nlf: " << nlf ); FG_LOG(FG_FLIGHT,FG_INFO,"v_rel_wind: " << v_rel_wind ); FG_LOG(FG_FLIGHT,FG_INFO,"v_true_kts: " << v_true_kts ); FG_LOG(FG_FLIGHT,FG_INFO,"v_rel_ground: " << v_rel_ground ); FG_LOG(FG_FLIGHT,FG_INFO,"v_inertial: " << v_inertial ); FG_LOG(FG_FLIGHT,FG_INFO,"v_ground_speed: " << v_ground_speed ); FG_LOG(FG_FLIGHT,FG_INFO,"v_equiv: " << v_equiv ); FG_LOG(FG_FLIGHT,FG_INFO,"v_equiv_kts: " << v_equiv_kts ); FG_LOG(FG_FLIGHT,FG_INFO,"v_calibrated: " << v_calibrated ); FG_LOG(FG_FLIGHT,FG_INFO,"v_calibrated_kts: " << v_calibrated_kts ); FG_LOG(FG_FLIGHT,FG_INFO,"gravity: " << gravity ); FG_LOG(FG_FLIGHT,FG_INFO,"centrifugal_relief: " << centrifugal_relief ); FG_LOG(FG_FLIGHT,FG_INFO,"alpha: " << alpha ); FG_LOG(FG_FLIGHT,FG_INFO,"beta: " << beta ); FG_LOG(FG_FLIGHT,FG_INFO,"alpha_dot: " << alpha_dot ); FG_LOG(FG_FLIGHT,FG_INFO,"beta_dot: " << beta_dot ); FG_LOG(FG_FLIGHT,FG_INFO,"cos_alpha: " << cos_alpha ); FG_LOG(FG_FLIGHT,FG_INFO,"sin_alpha: " << sin_alpha ); FG_LOG(FG_FLIGHT,FG_INFO,"cos_beta: " << cos_beta ); FG_LOG(FG_FLIGHT,FG_INFO,"sin_beta: " << sin_beta ); FG_LOG(FG_FLIGHT,FG_INFO,"cos_phi: " << cos_phi ); FG_LOG(FG_FLIGHT,FG_INFO,"sin_phi: " << sin_phi ); FG_LOG(FG_FLIGHT,FG_INFO,"cos_theta: " << cos_theta ); FG_LOG(FG_FLIGHT,FG_INFO,"sin_theta: " << sin_theta ); FG_LOG(FG_FLIGHT,FG_INFO,"cos_psi: " << cos_psi ); FG_LOG(FG_FLIGHT,FG_INFO,"sin_psi: " << sin_psi ); FG_LOG(FG_FLIGHT,FG_INFO,"gamma_vert_rad: " << gamma_vert_rad ); FG_LOG(FG_FLIGHT,FG_INFO,"gamma_horiz_rad: " << gamma_horiz_rad ); FG_LOG(FG_FLIGHT,FG_INFO,"sigma: " << sigma ); FG_LOG(FG_FLIGHT,FG_INFO,"density: " << density ); FG_LOG(FG_FLIGHT,FG_INFO,"v_sound: " << v_sound ); FG_LOG(FG_FLIGHT,FG_INFO,"mach_number: " << mach_number ); FG_LOG(FG_FLIGHT,FG_INFO,"static_pressure: " << static_pressure ); FG_LOG(FG_FLIGHT,FG_INFO,"total_pressure: " << total_pressure ); FG_LOG(FG_FLIGHT,FG_INFO,"impact_pressure: " << impact_pressure ); FG_LOG(FG_FLIGHT,FG_INFO,"dynamic_pressure: " << dynamic_pressure ); FG_LOG(FG_FLIGHT,FG_INFO,"static_temperature: " << static_temperature ); FG_LOG(FG_FLIGHT,FG_INFO,"total_temperature: " << total_temperature ); FG_LOG(FG_FLIGHT,FG_INFO,"sea_level_radius: " << sea_level_radius ); FG_LOG(FG_FLIGHT,FG_INFO,"earth_position_angle: " << earth_position_angle ); FG_LOG(FG_FLIGHT,FG_INFO,"runway_altitude: " << runway_altitude ); FG_LOG(FG_FLIGHT,FG_INFO,"runway_latitude: " << runway_latitude ); FG_LOG(FG_FLIGHT,FG_INFO,"runway_longitude: " << runway_longitude ); FG_LOG(FG_FLIGHT,FG_INFO,"runway_heading: " << runway_heading ); FG_LOG(FG_FLIGHT,FG_INFO,"radius_to_rwy: " << radius_to_rwy ); FG_LOG(FG_FLIGHT,FG_INFO,"climb_rate: " << climb_rate ); FG_LOG(FG_FLIGHT,FG_INFO,"sin_lat_geocentric: " << sin_lat_geocentric ); FG_LOG(FG_FLIGHT,FG_INFO,"cos_lat_geocentric: " << cos_lat_geocentric ); FG_LOG(FG_FLIGHT,FG_INFO,"sin_longitude: " << sin_longitude ); FG_LOG(FG_FLIGHT,FG_INFO,"cos_longitude: " << cos_longitude ); FG_LOG(FG_FLIGHT,FG_INFO,"sin_latitude: " << sin_latitude ); FG_LOG(FG_FLIGHT,FG_INFO,"cos_latitude: " << cos_latitude ); FG_LOG(FG_FLIGHT,FG_INFO,"altitude_agl: " << altitude_agl ); }