src/FDM/flight.cxx

   1 // flight.c -- a general interface to the various flight models
   2 //
   3 // Written by Curtis Olson, started May 1997.
   4 //
   5 // Copyright (C) 1997  Curtis L. Olson  - curt@infoplane.com
   6 //
   7 // This program is free software; you can redistribute it and/or
   8 // modify it under the terms of the GNU General Public License as
   9 // published by the Free Software Foundation; either version 2 of the
  10 // License, or (at your option) any later version.
  11 //
  12 // This program is distributed in the hope that it will be useful, but
  13 // WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 // General Public License for more details.
  16 //
  17 // You should have received a copy of the GNU General Public License
  18 // along with this program; if not, write to the Free Software
  19 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 //
  21 // $Id$
  22
  23
  24 #include <stdio.h>
  25
  26 #include <simgear/constants.h>
  27 #include <simgear/debug/logstream.hxx>
  28 #include <simgear/math/sg_geodesy.hxx>
  29
  30 #include <FDM/LaRCsim/ls_interface.h>
  31 #include <Main/globals.hxx>
  32 #include <Time/timestamp.hxx>
  33
  34 #include "External.hxx"
  35 #include "flight.hxx"
  36 #include "JSBSim.hxx"
  37 #include "LaRCsim.hxx"
  38 #include "Balloon.h"
  39
  40
  41 // base_fdm_state is the internal state that is updated in integer
  42 // multiples of "dt".  This leads to "jitter" with respect to the real
  43 // world time, so we introduce cur_fdm_state which is extrapolated by
  44 // the difference between sim time and real world time
  45
  46 FGInterface *cur_fdm_state;
  47 FGInterface base_fdm_state;
  48
  49 inline void init_vec(FG_VECTOR_3 vec) {
  50     vec[0] = 0.0; vec[1] = 0.0; vec[2] = 0.0;
  51 }
  52
  53 FGEngInterface::FGEngInterface(void) {
  54
  55     // inputs
  56     Throttle=0;
  57     Mixture=0;
  58     Prop_Advance=0;
  59
  60     // outputs
  61     RPM=0;
  62     Manifold_Pressure=0;
  63     MaxHP=0;
  64     Percentage_Power=0;
  65     EGT=0;
  66     prop_thrust=0;
  67 }
  68
  69 FGEngInterface::~FGEngInterface(void) {
  70 }
  71
  72
  73 // Constructor
  74 FGInterface::FGInterface(void) {
  75     init_vec( d_pilot_rp_body_v );
  76     init_vec( d_cg_rp_body_v );
  77     init_vec( f_body_total_v );
  78     init_vec( f_local_total_v );
  79     init_vec( f_aero_v );
  80     init_vec( f_engine_v );
  81     init_vec( f_gear_v );
  82     init_vec( m_total_rp_v );
  83     init_vec( m_total_cg_v );
  84     init_vec( m_aero_v );
  85     init_vec( m_engine_v );
  86     init_vec( m_gear_v );
  87     init_vec( v_dot_local_v );
  88     init_vec( v_dot_body_v );
  89     init_vec( a_cg_body_v );
  90     init_vec( a_pilot_body_v );
  91     init_vec( n_cg_body_v );
  92     init_vec( n_pilot_body_v );
  93     init_vec( omega_dot_body_v );
  94     init_vec( v_local_v );
  95     init_vec( v_local_rel_ground_v );
  96     init_vec( v_local_airmass_v );
  97     init_vec( v_local_rel_airmass_v );
  98     init_vec( v_local_gust_v );
  99     init_vec( v_wind_body_v );
 100     init_vec( omega_body_v );
 101     init_vec( omega_local_v );
 102     init_vec( omega_total_v );
 103     init_vec( euler_rates_v );
 104     init_vec( geocentric_rates_v );
 105     init_vec( geocentric_position_v );
 106     init_vec( geodetic_position_v );
 107     init_vec( euler_angles_v );
 108     init_vec( d_cg_rwy_local_v );
 109     init_vec( d_cg_rwy_rwy_v );
 110     init_vec( d_pilot_rwy_local_v );
 111     init_vec( d_pilot_rwy_rwy_v );
 112     init_vec( t_local_to_body_m[0] );
 113     init_vec( t_local_to_body_m[1] );
 114     init_vec( t_local_to_body_m[2] );
 115
 116     mass=i_xx=i_yy=i_zz=i_xz=0;
 117     nlf=0;
 118     v_rel_wind=v_true_kts=v_rel_ground=v_inertial=0;
 119     v_ground_speed=v_equiv=v_equiv_kts=0;
 120     v_calibrated=v_calibrated_kts=0;
 121     gravity=0;
 122     centrifugal_relief=0;
 123     alpha=beta=alpha_dot=beta_dot=0;
 124     cos_alpha=sin_alpha=cos_beta=sin_beta=0;
 125     cos_phi=sin_phi=cos_theta=sin_theta=cos_psi=sin_psi=0;
 126     gamma_vert_rad=gamma_horiz_rad=0;
 127     sigma=density=v_sound=mach_number=0;
 128     static_pressure=total_pressure=impact_pressure=0;
 129     dynamic_pressure=0;
 130     static_temperature=total_temperature=0;
 131     sea_level_radius=earth_position_angle=0;
 132     runway_altitude=runway_latitude=runway_longitude=0;
 133     runway_heading=0;
 134     radius_to_rwy=0;
 135     climb_rate=0;
 136     sin_lat_geocentric=cos_lat_geocentric=0;
 137     sin_latitude=cos_latitude=0;
 138     sin_longitude=cos_longitude=0;
 139     altitude_agl=0;
 140
 141     resetNeeded=false;
 142 }
 143
 144
 145 // Destructor
 146 FGInterface::~FGInterface() {
 147 }
 148
 149
 150 bool FGInterface::init( double dt ) {
 151     cout << "dummy init() ... SHOULDN'T BE CALLED!" << endl;
 152     return false;
 153 }
 154
 155
 156 bool FGInterface::update( int multi_loop ) {
 157     cout << "dummy update() ... SHOULDN'T BE CALLED!" << endl;
 158     return false;
 159 }
 160
 161
 162 // Extrapolate fdm based on time_offset (in usec)
 163 void FGInterface::extrapolate( int time_offset ) {
 164     double dt = time_offset / 1000000.0;
 165
 166     // -dw- metrowerks complains about ambiguous access, not critical
 167     // to keep this ;)
 168 #ifndef __MWERKS__
 169     cout << "extrapolating FDM by dt = " << dt << endl;
 170 #endif
 171
 172     double lat = geodetic_position_v[0] + geocentric_rates_v[0] * dt;
 173     double lat_geoc = geocentric_position_v[0] + geocentric_rates_v[0] * dt;
 174
 175     double lon = geodetic_position_v[1] + geocentric_rates_v[1] * dt;
 176     double lon_geoc = geocentric_position_v[1] + geocentric_rates_v[1] * dt;
 177
 178     double alt = geodetic_position_v[2] + geocentric_rates_v[2] * dt;
 179     double radius = geocentric_position_v[2] + geocentric_rates_v[2] * dt;
 180
 181     geodetic_position_v[0] = lat;
 182     geocentric_position_v[0] = lat_geoc;
 183
 184     geodetic_position_v[1] = lon;
 185     geocentric_position_v[1] = lon_geoc;
 186
 187     geodetic_position_v[2] = alt;
 188     geocentric_position_v[2] = radius;
 189 }
 190
 191
 192 // Set the altitude (force)
 193 void fgFDMForceAltitude(int model, double alt_meters) {
 194     double sea_level_radius_meters;
 195     double lat_geoc;
 196
 197     // Set the FG variables first
 198     sgGeodToGeoc( base_fdm_state.get_Latitude(), alt_meters,
 199                   &sea_level_radius_meters, &lat_geoc);
 200
 201     base_fdm_state.set_Altitude( alt_meters * METER_TO_FEET );
 202     base_fdm_state.set_Sea_level_radius( sea_level_radius_meters *
 203                                          METER_TO_FEET );
 204
 205
 206     // additional work needed for some flight models
 207     if ( model == FGInterface::FG_LARCSIM ) {
 208         ls_ForceAltitude( base_fdm_state.get_Altitude() );
 209     }
 210 }
 211
 212
 213 // Set the local ground elevation
 214 void fgFDMSetGroundElevation(int model, double ground_meters) {
 215     FG_LOG( FG_FLIGHT,FG_INFO, "fgFDMSetGroundElevation: "
 216             << ground_meters*METER_TO_FEET );
 217     base_fdm_state.set_Runway_altitude( ground_meters * METER_TO_FEET );
 218     cur_fdm_state->set_Runway_altitude( ground_meters * METER_TO_FEET );
 219 }
 220
 221
 222 // Positions
 223 void FGInterface::set_Latitude(double lat) {
 224     geodetic_position_v[0] = lat;
 225 }
 226
 227 void FGInterface::set_Longitude(double lon) {
 228     geodetic_position_v[1] = lon;
 229 }
 230
 231 void FGInterface::set_Altitude(double alt) {
 232     geodetic_position_v[2] = alt;
 233 }
 234
 235 void FGInterface::set_AltitudeAGL(double altagl) {
 236     altitude_agl=altagl;
 237 }
 238
 239 // Velocities
 240 void FGInterface::set_V_calibrated_kts(double vc) {
 241     v_calibrated_kts = vc;
 242 }
 243
 244 void FGInterface::set_Mach_number(double mach) {
 245     mach_number = mach;
 246 }
 247
 248 void FGInterface::set_Velocities_Local( double north,
 249                                         double east,
 250                                         double down ){
 251     v_local_v[0] = north;
 252     v_local_v[1] = east;
 253     v_local_v[2] = down;
 254 }
 255
 256 void FGInterface::set_Velocities_Wind_Body( double u,
 257                                             double v,
 258                                             double w){
 259     v_wind_body_v[0] = u;
 260     v_wind_body_v[1] = v;
 261     v_wind_body_v[2] = w;
 262 }
 263
 264 // Euler angles
 265 void FGInterface::set_Euler_Angles( double phi,
 266                                     double theta,
 267                                     double psi ) {
 268     euler_angles_v[0] = phi;
 269     euler_angles_v[1] = theta;
 270     euler_angles_v[2] = psi;
 271 }
 272
 273 // Flight Path
 274 void FGInterface::set_Climb_Rate( double roc) {
 275     climb_rate = roc;
 276 }
 277
 278 void FGInterface::set_Gamma_vert_rad( double gamma) {
 279     gamma_vert_rad = gamma;
 280 }
 281
 282 // Earth
 283 void FGInterface::set_Sea_level_radius(double slr) {
 284     sea_level_radius = slr;
 285 }
 286
 287 void FGInterface::set_Runway_altitude(double ralt) {
 288     runway_altitude = ralt;
 289 }
 290
 291 void FGInterface::set_Static_pressure(double p) { static_pressure = p; }
 292 void FGInterface::set_Static_temperature(double T) { static_temperature = T; }
 293 void FGInterface::set_Density(double rho) { density = rho; }
 294
 295 void FGInterface::set_Velocities_Local_Airmass (double wnorth,
 296                                                 double weast,
 297                                                 double wdown ) {
 298     v_local_airmass_v[0] = wnorth;
 299     v_local_airmass_v[1] = weast;
 300     v_local_airmass_v[2] = wdown;
 301 }
 302
 303
 304 void FGInterface::busdump(void) {
 305
 306     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]);
 307     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]);
 308     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]);
 309     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]);
 310     FG_LOG(FG_FLIGHT,FG_INFO,"f_aero_v[3]: " << f_aero_v[0] << ", " << f_aero_v[1] << ", " << f_aero_v[2]);
 311     FG_LOG(FG_FLIGHT,FG_INFO,"f_engine_v[3]: " << f_engine_v[0] << ", " << f_engine_v[1] << ", " << f_engine_v[2]);
 312     FG_LOG(FG_FLIGHT,FG_INFO,"f_gear_v[3]: " << f_gear_v[0] << ", " << f_gear_v[1] << ", " << f_gear_v[2]);
 313     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]);
 314     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]);
 315     FG_LOG(FG_FLIGHT,FG_INFO,"m_aero_v[3]: " << m_aero_v[0] << ", " << m_aero_v[1] << ", " << m_aero_v[2]);
 316     FG_LOG(FG_FLIGHT,FG_INFO,"m_engine_v[3]: " << m_engine_v[0] << ", " << m_engine_v[1] << ", " << m_engine_v[2]);
 317     FG_LOG(FG_FLIGHT,FG_INFO,"m_gear_v[3]: " << m_gear_v[0] << ", " << m_gear_v[1] << ", " << m_gear_v[2]);
 318     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]);
 319     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]);
 320     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]);
 321     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]);
 322     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]);
 323     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]);
 324     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]);
 325     FG_LOG(FG_FLIGHT,FG_INFO,"v_local_v[3]: " << v_local_v[0] << ", " << v_local_v[1] << ", " << v_local_v[2]);
 326     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]);
 327     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]);
 328     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]);
 329     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]);
 330     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]);
 331     FG_LOG(FG_FLIGHT,FG_INFO,"omega_body_v[3]: " << omega_body_v[0] << ", " << omega_body_v[1] << ", " << omega_body_v[2]);
 332     FG_LOG(FG_FLIGHT,FG_INFO,"omega_local_v[3]: " << omega_local_v[0] << ", " << omega_local_v[1] << ", " << omega_local_v[2]);
 333     FG_LOG(FG_FLIGHT,FG_INFO,"omega_total_v[3]: " << omega_total_v[0] << ", " << omega_total_v[1] << ", " << omega_total_v[2]);
 334     FG_LOG(FG_FLIGHT,FG_INFO,"euler_rates_v[3]: " << euler_rates_v[0] << ", " << euler_rates_v[1] << ", " << euler_rates_v[2]);
 335     FG_LOG(FG_FLIGHT,FG_INFO,"geocentric_rates_v[3]: " << geocentric_rates_v[0] << ", " << geocentric_rates_v[1] << ", " << geocentric_rates_v[2]);
 336     FG_LOG(FG_FLIGHT,FG_INFO,"geocentric_position_v[3]: " << geocentric_position_v[0] << ", " << geocentric_position_v[1] << ", " << geocentric_position_v[2]);
 337     FG_LOG(FG_FLIGHT,FG_INFO,"geodetic_position_v[3]: " << geodetic_position_v[0] << ", " << geodetic_position_v[1] << ", " << geodetic_position_v[2]);
 338     FG_LOG(FG_FLIGHT,FG_INFO,"euler_angles_v[3]: " << euler_angles_v[0] << ", " << euler_angles_v[1] << ", " << euler_angles_v[2]);
 339     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]);
 340     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]);
 341     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]);
 342     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]);
 343
 344     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]);
 345     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]);
 346     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]);
 347
 348     FG_LOG(FG_FLIGHT,FG_INFO,"mass: " << mass );
 349     FG_LOG(FG_FLIGHT,FG_INFO,"i_xx: " << i_xx );
 350     FG_LOG(FG_FLIGHT,FG_INFO,"i_yy: " << i_yy );
 351     FG_LOG(FG_FLIGHT,FG_INFO,"i_zz: " << i_zz );
 352     FG_LOG(FG_FLIGHT,FG_INFO,"i_xz: " << i_xz );
 353     FG_LOG(FG_FLIGHT,FG_INFO,"nlf: " << nlf );
 354     FG_LOG(FG_FLIGHT,FG_INFO,"v_rel_wind: " << v_rel_wind );
 355     FG_LOG(FG_FLIGHT,FG_INFO,"v_true_kts: " << v_true_kts );
 356     FG_LOG(FG_FLIGHT,FG_INFO,"v_rel_ground: " << v_rel_ground );
 357     FG_LOG(FG_FLIGHT,FG_INFO,"v_inertial: " << v_inertial );
 358     FG_LOG(FG_FLIGHT,FG_INFO,"v_ground_speed: " << v_ground_speed );
 359     FG_LOG(FG_FLIGHT,FG_INFO,"v_equiv: " << v_equiv );
 360     FG_LOG(FG_FLIGHT,FG_INFO,"v_equiv_kts: " << v_equiv_kts );
 361     FG_LOG(FG_FLIGHT,FG_INFO,"v_calibrated: " << v_calibrated );
 362     FG_LOG(FG_FLIGHT,FG_INFO,"v_calibrated_kts: " << v_calibrated_kts );
 363     FG_LOG(FG_FLIGHT,FG_INFO,"gravity: " << gravity );
 364     FG_LOG(FG_FLIGHT,FG_INFO,"centrifugal_relief: " << centrifugal_relief );
 365     FG_LOG(FG_FLIGHT,FG_INFO,"alpha: " << alpha );
 366     FG_LOG(FG_FLIGHT,FG_INFO,"beta: " << beta );
 367     FG_LOG(FG_FLIGHT,FG_INFO,"alpha_dot: " << alpha_dot );
 368     FG_LOG(FG_FLIGHT,FG_INFO,"beta_dot: " << beta_dot );
 369     FG_LOG(FG_FLIGHT,FG_INFO,"cos_alpha: " << cos_alpha );
 370     FG_LOG(FG_FLIGHT,FG_INFO,"sin_alpha: " << sin_alpha );
 371     FG_LOG(FG_FLIGHT,FG_INFO,"cos_beta: " << cos_beta );
 372     FG_LOG(FG_FLIGHT,FG_INFO,"sin_beta: " << sin_beta );
 373     FG_LOG(FG_FLIGHT,FG_INFO,"cos_phi: " << cos_phi );
 374     FG_LOG(FG_FLIGHT,FG_INFO,"sin_phi: " << sin_phi );
 375     FG_LOG(FG_FLIGHT,FG_INFO,"cos_theta: " << cos_theta );
 376     FG_LOG(FG_FLIGHT,FG_INFO,"sin_theta: " << sin_theta );
 377     FG_LOG(FG_FLIGHT,FG_INFO,"cos_psi: " << cos_psi );
 378     FG_LOG(FG_FLIGHT,FG_INFO,"sin_psi: " << sin_psi );
 379     FG_LOG(FG_FLIGHT,FG_INFO,"gamma_vert_rad: " << gamma_vert_rad );
 380     FG_LOG(FG_FLIGHT,FG_INFO,"gamma_horiz_rad: " << gamma_horiz_rad );
 381     FG_LOG(FG_FLIGHT,FG_INFO,"sigma: " << sigma );
 382     FG_LOG(FG_FLIGHT,FG_INFO,"density: " << density );
 383     FG_LOG(FG_FLIGHT,FG_INFO,"v_sound: " << v_sound );
 384     FG_LOG(FG_FLIGHT,FG_INFO,"mach_number: " << mach_number );
 385     FG_LOG(FG_FLIGHT,FG_INFO,"static_pressure: " << static_pressure );
 386     FG_LOG(FG_FLIGHT,FG_INFO,"total_pressure: " << total_pressure );
 387     FG_LOG(FG_FLIGHT,FG_INFO,"impact_pressure: " << impact_pressure );
 388     FG_LOG(FG_FLIGHT,FG_INFO,"dynamic_pressure: " << dynamic_pressure );
 389     FG_LOG(FG_FLIGHT,FG_INFO,"static_temperature: " << static_temperature );
 390     FG_LOG(FG_FLIGHT,FG_INFO,"total_temperature: " << total_temperature );
 391     FG_LOG(FG_FLIGHT,FG_INFO,"sea_level_radius: " << sea_level_radius );
 392     FG_LOG(FG_FLIGHT,FG_INFO,"earth_position_angle: " << earth_position_angle );
 393     FG_LOG(FG_FLIGHT,FG_INFO,"runway_altitude: " << runway_altitude );
 394     FG_LOG(FG_FLIGHT,FG_INFO,"runway_latitude: " << runway_latitude );
 395     FG_LOG(FG_FLIGHT,FG_INFO,"runway_longitude: " << runway_longitude );
 396     FG_LOG(FG_FLIGHT,FG_INFO,"runway_heading: " << runway_heading );
 397     FG_LOG(FG_FLIGHT,FG_INFO,"radius_to_rwy: " << radius_to_rwy );
 398     FG_LOG(FG_FLIGHT,FG_INFO,"climb_rate: " << climb_rate );
 399     FG_LOG(FG_FLIGHT,FG_INFO,"sin_lat_geocentric: " << sin_lat_geocentric );
 400     FG_LOG(FG_FLIGHT,FG_INFO,"cos_lat_geocentric: " << cos_lat_geocentric );
 401     FG_LOG(FG_FLIGHT,FG_INFO,"sin_longitude: " << sin_longitude );
 402     FG_LOG(FG_FLIGHT,FG_INFO,"cos_longitude: " << cos_longitude );
 403     FG_LOG(FG_FLIGHT,FG_INFO,"sin_latitude: " << sin_latitude );
 404     FG_LOG(FG_FLIGHT,FG_INFO,"cos_latitude: " << cos_latitude );
 405     FG_LOG(FG_FLIGHT,FG_INFO,"altitude_agl: " << altitude_agl );
 406 }
 407