]> git.mxchange.org Git - flightgear.git/blobdiff - src/FDM/flight.cxx
- make certain UVW velocities don't overright airspeed-kt at startup
[flightgear.git] / src / FDM / flight.cxx
index 5e3dac21d84b7bb832f2f8ce6bc28e3c28c9479a..1caf20c99885648d04d7eb726ada81a615a22a41 100644 (file)
@@ -1,4 +1,4 @@
-// flight.c -- a general interface to the various flight models
+// flight.cxx -- a general interface to the various flight models
 //
 // Written by Curtis Olson, started May 1997.
 //
@@ -74,6 +74,30 @@ FGEngInterface::~FGEngInterface(void) {
 
 // Constructor
 FGInterface::FGInterface() {
+    _setup();
+}  
+
+FGInterface::FGInterface( double dt ) {
+    
+    _setup();
+    delta_t = dt;
+    remainder = elapsed = multi_loop = 0;
+}
+
+// Destructor
+FGInterface::~FGInterface() {
+//   unbind();                 // FIXME: should be called explicitly
+}
+
+
+/**
+ * Set default values for the state of the FDM.
+ *
+ * This method is invoked by the constructors.
+ */
+void
+FGInterface::_setup ()
+{
     init_vec( d_pilot_rp_body_v );
     init_vec( d_cg_rp_body_v );
     init_vec( f_body_total_v );
@@ -139,103 +163,204 @@ FGInterface::FGInterface() {
     sin_latitude=cos_latitude=0;
     sin_longitude=cos_longitude=0;
     altitude_agl=0;
-}  
-
-FGInterface::FGInterface( double dt ) {
-    FGInterface();
-
-    delta_t = dt;
-    remainder = elapsed = multi_loop = 0;
-}
-
-// Destructor
-FGInterface::~FGInterface() {
-//   unbind();                 // FIXME: should be called explicitly
 }
 
 
+/**
+ * Initialize the state of the FDM.
+ *
+ * Subclasses of FGInterface may do their own, additional initialization,
+ * but normally they should invoke this method explicitly first as
+ * FGInterface::init() to make sure the basic structures are set up
+ * properly.
+ */
 void
 FGInterface::init ()
 {
+  SG_LOG(SG_FLIGHT, SG_INFO, "Start initializing FGInterface");
+
+  stamp();
+  set_remainder(0);
+
+                               // Set initial position
+  SG_LOG(SG_FLIGHT, SG_INFO, "...initializing position...");
+  set_Longitude(fgGetDouble("/position/longitude-deg") * SGD_DEGREES_TO_RADIANS);
+  set_Latitude(fgGetDouble("/position/latitude-deg") * SGD_DEGREES_TO_RADIANS);
+  double ground_elev_m = scenery.cur_elev + 1;
+  double ground_elev_ft = ground_elev_m * METERS_TO_FEET;
+  if (fgGetBool("/sim/startup/onground") ||
+      fgGetDouble("/position/altitude-ft") < ground_elev_ft)
+    fgSetDouble("/position/altitude-ft", ground_elev_ft);
+  set_Altitude(fgGetDouble("/position/altitude-ft"));
+
+                               // Set ground elevation
+  SG_LOG(SG_FLIGHT, SG_INFO,
+        "...initializing ground elevation to "
+        << ground_elev_ft << "ft...");
+  fgFDMSetGroundElevation("jsb", ground_elev_m);
+
+                               // Set sea-level radius
+  SG_LOG(SG_FLIGHT, SG_INFO, "...initializing sea-level radius...");
+  double sea_level_radius_meters;
+  double lat_geoc;
+  sgGeodToGeoc(get_Latitude(), get_Altitude(),
+              &sea_level_radius_meters, &lat_geoc);
+  set_Sea_level_radius(sea_level_radius_meters * SG_METER_TO_FEET);
+
+                               // Set initial velocities
+  SG_LOG(SG_FLIGHT, SG_INFO, "...initializing velocities...");
+  if (!fgHasNode("/sim/startup/speed-set")) {
+    set_V_calibrated_kts(0.0);
+  } else {
+    const string speedset = fgGetString("/sim/startup/speed-set");
+    if (speedset == "knots" || speedset == "KNOTS") {
+      set_V_calibrated_kts(fgGetDouble("/velocities/airspeed-kt"));
+    } else if (speedset == "mach" || speedset == "MACH") {
+      set_Mach_number(fgGetDouble("/velocities/mach"));
+    } else if (speedset == "UVW" || speedset == "uvw") {
+      set_Velocities_Wind_Body(fgGetDouble("/velocities/uBody-fps"),
+                              fgGetDouble("/velocities/vBody-fps"),
+                              fgGetDouble("/velocities/wBody-fps"));
+    } else if (speedset == "NED" || speedset == "ned") {
+      set_Velocities_Local(fgGetDouble("/velocities/speed-north-fps"),
+                          fgGetDouble("/velocities/speed-east-fps"),
+                          fgGetDouble("/velocities/speed-down-fps"));
+    } else {
+      SG_LOG(SG_FLIGHT, SG_ALERT,
+            "Unrecognized value for /sim/startup/speed-set: " << speedset);
+      set_V_calibrated_kts(0.0);
+    }
+  }
+
+                               // Set initial Euler angles
+  SG_LOG(SG_FLIGHT, SG_INFO, "...initializing Euler angles...");
+  set_Euler_Angles
+    (fgGetDouble("/orientation/roll-deg") * SGD_DEGREES_TO_RADIANS,
+     fgGetDouble("/orientation/pitch-deg") * SGD_DEGREES_TO_RADIANS,
+     fgGetDouble("/orientation/heading-deg") * SGD_DEGREES_TO_RADIANS);
+
+  SG_LOG(SG_FLIGHT, SG_INFO, "End initializing FGInterface");
 }
 
+
+/**
+ * Bind getters and setters to properties.
+ *
+ * The bind() method will be invoked after init().  Note that unlike
+ * the usual implementations of FGSubsystem::bind(), this method does
+ * not automatically pick up existing values for the properties at
+ * bind time; instead, all values are set explicitly in the init()
+ * method.
+ */
 void
 FGInterface::bind ()
 {
-                                // Time management
+                                // Time management (read-only)
   fgTie("/fdm/time/delta_t", this, 
-       &(FGInterface::get_delta_t),
-       &(FGInterface::set_delta_t));
-
-  // The following two can't be uncommented until we have support for
-  // the "long" data type in the property manager
-  /*  fgTie("/fdm/time/elapsed", this, 
-       &(FGInterface::get_elapsed),
-       &(FGInterface::set_elapsed));
+       &FGInterface::get_delta_t); // read-only
+  fgTie("/fdm/time/elapsed", this, 
+       &FGInterface::get_elapsed); // read-only
   fgTie("/fdm/time/remainder", this, 
-       &(FGInterface::get_remainder),
-       &(FGInterface::set_remainder)); */
+       &FGInterface::get_remainder); // read-only
   fgTie("/fdm/time/multi_loop", this, 
-       &(FGInterface::get_multi_loop),
-       &(FGInterface::set_multi_loop));
+       &FGInterface::get_multi_loop); // read-only
 
                        // Aircraft position
-  fgTie("/position/latitude", this,
-       &(FGInterface::get_Latitude_deg),
-       &(FGInterface::set_Latitude_deg));
-  fgTie("/position/longitude", this,
-       &(FGInterface::get_Longitude_deg),
-       &(FGInterface::set_Longitude_deg));
-  fgTie("/position/altitude", this,
-       &(FGInterface::get_Altitude),
-       &(FGInterface::set_Altitude));
-  fgTie("/position/altitude-agl", this,
-       &(FGInterface::get_Altitude_AGL)); // read-only
+  fgTie("/position/latitude-deg", this,
+       &FGInterface::get_Latitude_deg,
+       &FGInterface::set_Latitude_deg,
+       false);
+  fgSetArchivable("/position/latitude-deg");
+  fgTie("/position/longitude-deg", this,
+       &FGInterface::get_Longitude_deg,
+       &FGInterface::set_Longitude_deg,
+       false);
+  fgSetArchivable("/position/longitude-deg");
+  fgTie("/position/altitude-ft", this,
+       &FGInterface::get_Altitude,
+       &FGInterface::set_Altitude,
+       false);
+  fgSetArchivable("/position/altitude-ft");
+  fgTie("/position/altitude-agl-ft", this,
+       &FGInterface::get_Altitude_AGL); // read-only
 
                                // Orientation
-  fgTie("/orientation/roll", this,
-       &(FGInterface::get_Phi_deg),
-       &(FGInterface::set_Phi_deg));
-  fgTie("/orientation/pitch", this,
-       &(FGInterface::get_Theta_deg),
-       &(FGInterface::set_Theta_deg));
-  fgTie("/orientation/heading", this,
-       &(FGInterface::get_Psi_deg),
-       &(FGInterface::set_Psi_deg));
+  fgTie("/orientation/roll-deg", this,
+       &FGInterface::get_Phi_deg,
+       &FGInterface::set_Phi_deg);
+  fgSetArchivable("/orientation/roll-deg");
+  fgTie("/orientation/pitch-deg", this,
+       &FGInterface::get_Theta_deg,
+       &FGInterface::set_Theta_deg);
+  fgSetArchivable("/orientation/pitch-deg");
+  fgTie("/orientation/heading-deg", this,
+       &FGInterface::get_Psi_deg,
+       &FGInterface::set_Psi_deg);
+  fgSetArchivable("/orientation/heading-deg");
 
                                // Calibrated airspeed
-  fgTie("/velocities/airspeed", this,
-       &(FGInterface::get_V_calibrated_kts),
-       &(FGInterface::set_V_calibrated_kts));
+  fgTie("/velocities/airspeed-kt", this,
+       &FGInterface::get_V_calibrated_kts,
+       &FGInterface::set_V_calibrated_kts,
+       false);
 
                                // Local velocities
-  fgTie("/velocities/speed-north", this,
-       &(FGInterface::get_V_north));
-  fgTie("/velocities/speed-east", this,
-       &(FGInterface::get_V_east),
-       &(FGInterface::set_V_east));
-  fgTie("/velocities/speed-down", this,
-       &(FGInterface::get_V_down),
-       &(FGInterface::set_V_down));
+//   fgTie("/velocities/speed-north-fps", this,
+//     &FGInterface::get_V_north,
+//     &FGInterface::set_V_north);
+//   fgSetArchivable("/velocities/speed-north-fps");
+//   fgTie("/velocities/speed-east-fps", this,
+//     &FGInterface::get_V_east,
+//     &FGInterface::set_V_east);
+//   fgSetArchivable("/velocities/speed-east-fps");
+//   fgTie("/velocities/speed-down-fps", this,
+//     &FGInterface::get_V_down,
+//     &FGInterface::set_V_down);
+//   fgSetArchivable("/velocities/speed-down-fps");
+                               // FIXME: Temporarily read-only, until the
+                               // incompatibilities between JSBSim and
+                               // LaRCSim are fixed (LaRCSim adds the
+                               // earth's rotation to the east velocity).
+  fgTie("/velocities/speed-north-fps", this,
+       &FGInterface::get_V_north);
+  fgTie("/velocities/speed-east-fps", this,
+       &FGInterface::get_V_east);
+  fgTie("/velocities/speed-down-fps", this,
+       &FGInterface::get_V_down);
 
                                // Relative wind
-  fgTie("/velocities/uBody", this,
-       &(FGInterface::get_uBody),
-       &(FGInterface::set_uBody));
-  fgTie("/velocities/vBody", this,
-       &(FGInterface::get_vBody),
-       &(FGInterface::set_vBody));
-  fgTie("/velocities/wBody", this,
-       &(FGInterface::get_wBody),
-       &(FGInterface::set_wBody));
+                               // FIXME: temporarily archivable, until
+                               // the NED problem is fixed.
+  fgTie("/velocities/uBody-fps", this,
+       &FGInterface::get_uBody,
+       &FGInterface::set_uBody,
+       false);
+  fgSetArchivable("/velocities/uBody-fps");
+  fgTie("/velocities/vBody-fps", this,
+       &FGInterface::get_vBody,
+       &FGInterface::set_vBody,
+       false);
+  fgSetArchivable("/velocities/vBody-fps");
+  fgTie("/velocities/wBody-fps", this,
+       &FGInterface::get_wBody,
+       &FGInterface::set_wBody,
+       false);
+  fgSetArchivable("/velocities/wBody-fps");
 
                                // Climb and slip (read-only)
-  fgTie("/velocities/vertical-speed", this,
-       &(FGInterface::get_Climb_Rate)); // read-only
-  fgTie("/velocities/side-slip", this,
-       &(FGInterface::get_Beta)); // read-only
+  fgTie("/velocities/vertical-speed-fps", this,
+       &FGInterface::get_Climb_Rate); // read-only
+  fgTie("/velocities/side-slip-rad", this,
+       &FGInterface::get_Beta); // read-only
 }
 
+
+/**
+ * Unbind any properties bound to this FDM.
+ *
+ * This method allows the FDM to release properties so that a new
+ * FDM can bind them instead.
+ */
 void
 FGInterface::unbind ()
 {
@@ -243,23 +368,27 @@ FGInterface::unbind ()
   fgUntie("/fdm/time/elapsed");
   fgUntie("/fdm/time/remainder");
   fgUntie("/fdm/time/multi_loop");
-  fgUntie("/position/latitude");
-  fgUntie("/position/longitude");
-  fgUntie("/position/altitude");
+  fgUntie("/position/latitude-deg");
+  fgUntie("/position/longitude-deg");
+  fgUntie("/position/altitude-ft");
   fgUntie("/position/heading");
   fgUntie("/position/pitch");
   fgUntie("/position/roll");
-  fgUntie("/velocities/airspeed");
-  fgUntie("/velocities/speed-north");
-  fgUntie("/velocities/speed-east");
-  fgUntie("/velocities/speed-down");
-  fgUntie("/velocities/uBody");
-  fgUntie("/velocities/vBody");
-  fgUntie("/velocities/wBody");
-  fgUntie("/velocities/vertical-speed");
-  fgUntie("/velocities/side-slip");
+  fgUntie("/velocities/airspeed-kt");
+  fgUntie("/velocities/speed-north-fps");
+  fgUntie("/velocities/speed-east-fps");
+  fgUntie("/velocities/speed-down-fps");
+  fgUntie("/velocities/uBody-fps");
+  fgUntie("/velocities/vBody-fps");
+  fgUntie("/velocities/wBody-fps");
+  fgUntie("/velocities/vertical-speed-fps");
+  fgUntie("/velocities/side-slip-rad");
 }
 
+
+/**
+ * Update the state of the FDM (i.e. run the equations of motion).
+ */
 void
 FGInterface::update ()
 {
@@ -276,25 +405,25 @@ bool FGInterface::update( int multi_loop ) {
 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,
+    sgGeocToGeod( lat_geoc, ( get_Sea_level_radius() + alt ) * SG_FEET_TO_METER,
                  &lat_geod, &tmp_alt, &sl_radius1 );
-    sgGeodToGeoc( lat_geod, alt * FEET_TO_METER, &sl_radius2, &tmp_lat_geoc );
+    sgGeodToGeoc( lat_geod, alt * SG_FEET_TO_METER, &sl_radius2, &tmp_lat_geoc );
 
-    FG_LOG( FG_FLIGHT, FG_DEBUG, "lon = " << lon 
+    SG_LOG( SG_FLIGHT, SG_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 );
+           << " tmp_alt = " << tmp_alt * SG_METER_TO_FEET
+           << " sl_radius1 = " << sl_radius1 * SG_METER_TO_FEET
+           << " sl_radius2 = " << sl_radius2 * SG_METER_TO_FEET
+           << " Equator = " << SG_EQUATORIAL_RADIUS_FT );
 
     _set_Geocentric_Position( lat_geoc, lon, 
-                             sl_radius2 * METER_TO_FEET + alt );
+                             sl_radius2 * SG_METER_TO_FEET + alt );
        
     _set_Geodetic_Position( lat_geod, lon, alt );
        
-    _set_Sea_level_radius( sl_radius2 * METER_TO_FEET );
+    _set_Sea_level_radius( sl_radius2 * SG_METER_TO_FEET );
     _set_Runway_altitude( scenery.cur_elev*METERS_TO_FEET ); 
        
     _set_sin_lat_geocentric( lat_geoc );
@@ -357,6 +486,8 @@ void FGInterface::extrapolate( int time_offset ) {
 
 // Set the altitude (force)
 void fgFDMForceAltitude(const string &model, double alt_meters) {
+    SG_LOG(SG_FLIGHT,SG_INFO, "fgFDMForceAltitude: " << alt_meters );
+    
     double sea_level_radius_meters;
     double lat_geoc;
 
@@ -364,10 +495,13 @@ void fgFDMForceAltitude(const string &model, double alt_meters) {
     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_Altitude( alt_meters * SG_METER_TO_FEET );
     base_fdm_state.set_Sea_level_radius( sea_level_radius_meters *
-                                        METER_TO_FEET ); 
-                                         
+                                        SG_METER_TO_FEET ); 
+               
+    cur_fdm_state->set_Altitude( alt_meters * SG_METER_TO_FEET );
+    cur_fdm_state->set_Sea_level_radius( sea_level_radius_meters * 
+           SG_METER_TO_FEET );                   
 
     // additional work needed for some flight models
     if ( model == "larcsim" ) {
@@ -378,10 +512,10 @@ void fgFDMForceAltitude(const string &model, double alt_meters) {
 
 // Set the local ground elevation
 void fgFDMSetGroundElevation(const string &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 );
+    SG_LOG( SG_FLIGHT,SG_INFO, "fgFDMSetGroundElevation: "
+           << ground_meters*SG_METER_TO_FEET ); 
+    base_fdm_state.set_Runway_altitude( ground_meters * SG_METER_TO_FEET );
+    cur_fdm_state->set_Runway_altitude( ground_meters * SG_METER_TO_FEET );
 }
 
 
@@ -469,105 +603,110 @@ void FGInterface::set_Velocities_Local_Airmass (double wnorth,
 
 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]);
+    SG_LOG(SG_FLIGHT,SG_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]);
+    SG_LOG(SG_FLIGHT,SG_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]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"f_body_total_v[3]: " << f_body_total_v[0] << ", " << f_body_total_v[1] << ", " << f_body_total_v[2]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"f_local_total_v[3]: " << f_local_total_v[0] << ", " << f_local_total_v[1] << ", " << f_local_total_v[2]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"f_aero_v[3]: " << f_aero_v[0] << ", " << f_aero_v[1] << ", " << f_aero_v[2]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"f_engine_v[3]: " << f_engine_v[0] << ", " << f_engine_v[1] << ", " << f_engine_v[2]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"f_gear_v[3]: " << f_gear_v[0] << ", " << f_gear_v[1] << ", " << f_gear_v[2]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"m_total_rp_v[3]: " << m_total_rp_v[0] << ", " << m_total_rp_v[1] << ", " << m_total_rp_v[2]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"m_total_cg_v[3]: " << m_total_cg_v[0] << ", " << m_total_cg_v[1] << ", " << m_total_cg_v[2]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"m_aero_v[3]: " << m_aero_v[0] << ", " << m_aero_v[1] << ", " << m_aero_v[2]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"m_engine_v[3]: " << m_engine_v[0] << ", " << m_engine_v[1] << ", " << m_engine_v[2]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"m_gear_v[3]: " << m_gear_v[0] << ", " << m_gear_v[1] << ", " << m_gear_v[2]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"v_dot_local_v[3]: " << v_dot_local_v[0] << ", " << v_dot_local_v[1] << ", " << v_dot_local_v[2]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"v_dot_body_v[3]: " << v_dot_body_v[0] << ", " << v_dot_body_v[1] << ", " << v_dot_body_v[2]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"a_cg_body_v[3]: " << a_cg_body_v[0] << ", " << a_cg_body_v[1] << ", " << a_cg_body_v[2]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"a_pilot_body_v[3]: " << a_pilot_body_v[0] << ", " << a_pilot_body_v[1] << ", " << a_pilot_body_v[2]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"n_cg_body_v[3]: " << n_cg_body_v[0] << ", " << n_cg_body_v[1] << ", " << n_cg_body_v[2]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"n_pilot_body_v[3]: " << n_pilot_body_v[0] << ", " << n_pilot_body_v[1] << ", " << n_pilot_body_v[2]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"omega_dot_body_v[3]: " << omega_dot_body_v[0] << ", " << omega_dot_body_v[1] << ", " << omega_dot_body_v[2]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"v_local_v[3]: " << v_local_v[0] << ", " << v_local_v[1] << ", " << v_local_v[2]);
+    SG_LOG(SG_FLIGHT,SG_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]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"v_local_airmass_v[3]: " << v_local_airmass_v[0] << ", " << v_local_airmass_v[1] << ", " << v_local_airmass_v[2]);
+    SG_LOG(SG_FLIGHT,SG_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]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"v_local_gust_v[3]: " << v_local_gust_v[0] << ", " << v_local_gust_v[1] << ", " << v_local_gust_v[2]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"v_wind_body_v[3]: " << v_wind_body_v[0] << ", " << v_wind_body_v[1] << ", " << v_wind_body_v[2]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"omega_body_v[3]: " << omega_body_v[0] << ", " << omega_body_v[1] << ", " << omega_body_v[2]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"omega_local_v[3]: " << omega_local_v[0] << ", " << omega_local_v[1] << ", " << omega_local_v[2]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"omega_total_v[3]: " << omega_total_v[0] << ", " << omega_total_v[1] << ", " << omega_total_v[2]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"euler_rates_v[3]: " << euler_rates_v[0] << ", " << euler_rates_v[1] << ", " << euler_rates_v[2]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"geocentric_rates_v[3]: " << geocentric_rates_v[0] << ", " << geocentric_rates_v[1] << ", " << geocentric_rates_v[2]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"geocentric_position_v[3]: " << geocentric_position_v[0] << ", " << geocentric_position_v[1] << ", " << geocentric_position_v[2]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"geodetic_position_v[3]: " << geodetic_position_v[0] << ", " << geodetic_position_v[1] << ", " << geodetic_position_v[2]);
+    SG_LOG(SG_FLIGHT,SG_INFO,"euler_angles_v[3]: " << euler_angles_v[0] << ", " << euler_angles_v[1] << ", " << euler_angles_v[2]);
+    SG_LOG(SG_FLIGHT,SG_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]);
+    SG_LOG(SG_FLIGHT,SG_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]);
+    SG_LOG(SG_FLIGHT,SG_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]);
+    SG_LOG(SG_FLIGHT,SG_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 );
+    SG_LOG(SG_FLIGHT,SG_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]);
+    SG_LOG(SG_FLIGHT,SG_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]);
+    SG_LOG(SG_FLIGHT,SG_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]);
+
+    SG_LOG(SG_FLIGHT,SG_INFO,"mass: " << mass );
+    SG_LOG(SG_FLIGHT,SG_INFO,"i_xx: " << i_xx );
+    SG_LOG(SG_FLIGHT,SG_INFO,"i_yy: " << i_yy );
+    SG_LOG(SG_FLIGHT,SG_INFO,"i_zz: " << i_zz );
+    SG_LOG(SG_FLIGHT,SG_INFO,"i_xz: " << i_xz );
+    SG_LOG(SG_FLIGHT,SG_INFO,"nlf: " << nlf );
+    SG_LOG(SG_FLIGHT,SG_INFO,"v_rel_wind: " << v_rel_wind );
+    SG_LOG(SG_FLIGHT,SG_INFO,"v_true_kts: " << v_true_kts );
+    SG_LOG(SG_FLIGHT,SG_INFO,"v_rel_ground: " << v_rel_ground );
+    SG_LOG(SG_FLIGHT,SG_INFO,"v_inertial: " << v_inertial );
+    SG_LOG(SG_FLIGHT,SG_INFO,"v_ground_speed: " << v_ground_speed );
+    SG_LOG(SG_FLIGHT,SG_INFO,"v_equiv: " << v_equiv );
+    SG_LOG(SG_FLIGHT,SG_INFO,"v_equiv_kts: " << v_equiv_kts );
+    SG_LOG(SG_FLIGHT,SG_INFO,"v_calibrated: " << v_calibrated );
+    SG_LOG(SG_FLIGHT,SG_INFO,"v_calibrated_kts: " << v_calibrated_kts );
+    SG_LOG(SG_FLIGHT,SG_INFO,"gravity: " << gravity );
+    SG_LOG(SG_FLIGHT,SG_INFO,"centrifugal_relief: " << centrifugal_relief );
+    SG_LOG(SG_FLIGHT,SG_INFO,"alpha: " << alpha );
+    SG_LOG(SG_FLIGHT,SG_INFO,"beta: " << beta );
+    SG_LOG(SG_FLIGHT,SG_INFO,"alpha_dot: " << alpha_dot );
+    SG_LOG(SG_FLIGHT,SG_INFO,"beta_dot: " << beta_dot );
+    SG_LOG(SG_FLIGHT,SG_INFO,"cos_alpha: " << cos_alpha );
+    SG_LOG(SG_FLIGHT,SG_INFO,"sin_alpha: " << sin_alpha );
+    SG_LOG(SG_FLIGHT,SG_INFO,"cos_beta: " << cos_beta );
+    SG_LOG(SG_FLIGHT,SG_INFO,"sin_beta: " << sin_beta );
+    SG_LOG(SG_FLIGHT,SG_INFO,"cos_phi: " << cos_phi );
+    SG_LOG(SG_FLIGHT,SG_INFO,"sin_phi: " << sin_phi );
+    SG_LOG(SG_FLIGHT,SG_INFO,"cos_theta: " << cos_theta );
+    SG_LOG(SG_FLIGHT,SG_INFO,"sin_theta: " << sin_theta );
+    SG_LOG(SG_FLIGHT,SG_INFO,"cos_psi: " << cos_psi );
+    SG_LOG(SG_FLIGHT,SG_INFO,"sin_psi: " << sin_psi );
+    SG_LOG(SG_FLIGHT,SG_INFO,"gamma_vert_rad: " << gamma_vert_rad );
+    SG_LOG(SG_FLIGHT,SG_INFO,"gamma_horiz_rad: " << gamma_horiz_rad );
+    SG_LOG(SG_FLIGHT,SG_INFO,"sigma: " << sigma );
+    SG_LOG(SG_FLIGHT,SG_INFO,"density: " << density );
+    SG_LOG(SG_FLIGHT,SG_INFO,"v_sound: " << v_sound );
+    SG_LOG(SG_FLIGHT,SG_INFO,"mach_number: " << mach_number );
+    SG_LOG(SG_FLIGHT,SG_INFO,"static_pressure: " << static_pressure );
+    SG_LOG(SG_FLIGHT,SG_INFO,"total_pressure: " << total_pressure );
+    SG_LOG(SG_FLIGHT,SG_INFO,"impact_pressure: " << impact_pressure );
+    SG_LOG(SG_FLIGHT,SG_INFO,"dynamic_pressure: " << dynamic_pressure );
+    SG_LOG(SG_FLIGHT,SG_INFO,"static_temperature: " << static_temperature );
+    SG_LOG(SG_FLIGHT,SG_INFO,"total_temperature: " << total_temperature );
+    SG_LOG(SG_FLIGHT,SG_INFO,"sea_level_radius: " << sea_level_radius );
+    SG_LOG(SG_FLIGHT,SG_INFO,"earth_position_angle: " << earth_position_angle );
+    SG_LOG(SG_FLIGHT,SG_INFO,"runway_altitude: " << runway_altitude );
+    SG_LOG(SG_FLIGHT,SG_INFO,"runway_latitude: " << runway_latitude );
+    SG_LOG(SG_FLIGHT,SG_INFO,"runway_longitude: " << runway_longitude );
+    SG_LOG(SG_FLIGHT,SG_INFO,"runway_heading: " << runway_heading );
+    SG_LOG(SG_FLIGHT,SG_INFO,"radius_to_rwy: " << radius_to_rwy );
+    SG_LOG(SG_FLIGHT,SG_INFO,"climb_rate: " << climb_rate );
+    SG_LOG(SG_FLIGHT,SG_INFO,"sin_lat_geocentric: " << sin_lat_geocentric );
+    SG_LOG(SG_FLIGHT,SG_INFO,"cos_lat_geocentric: " << cos_lat_geocentric );
+    SG_LOG(SG_FLIGHT,SG_INFO,"sin_longitude: " << sin_longitude );
+    SG_LOG(SG_FLIGHT,SG_INFO,"cos_longitude: " << cos_longitude );
+    SG_LOG(SG_FLIGHT,SG_INFO,"sin_latitude: " << sin_latitude );
+    SG_LOG(SG_FLIGHT,SG_INFO,"cos_latitude: " << cos_latitude );
+    SG_LOG(SG_FLIGHT,SG_INFO,"altitude_agl: " << altitude_agl );
 }  
 
+
+void fgToggleFDMdataLogging(void) {
+  cur_fdm_state->ToggleDataLogging();
+}
+