1 // JSBsim.cxx -- interface to the JSBsim flight model
3 // Written by Curtis Olson, started February 1999.
5 // Copyright (C) 1999 Curtis L. Olson - curt@flightgear.org
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.
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.
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.
28 #include <simgear/compiler.h>
30 #ifdef SG_MATH_EXCEPTION_CLASH
36 #include <simgear/constants.h>
37 #include <simgear/debug/logstream.hxx>
38 #include <simgear/math/sg_geodesy.hxx>
39 #include <simgear/misc/sg_path.hxx>
41 #include <FDM/flight.hxx>
43 #include <Aircraft/aircraft.hxx>
44 #include <Controls/controls.hxx>
45 #include <Main/globals.hxx>
46 #include <Main/fg_props.hxx>
48 #include <FDM/JSBSim/FGFDMExec.h>
49 #include <FDM/JSBSim/FGAircraft.h>
50 #include <FDM/JSBSim/FGFCS.h>
51 #include <FDM/JSBSim/FGPosition.h>
52 #include <FDM/JSBSim/FGRotation.h>
53 #include <FDM/JSBSim/FGState.h>
54 #include <FDM/JSBSim/FGTranslation.h>
55 #include <FDM/JSBSim/FGAuxiliary.h>
56 #include <FDM/JSBSim/FGInitialCondition.h>
57 #include <FDM/JSBSim/FGTrim.h>
58 #include <FDM/JSBSim/FGAtmosphere.h>
59 #include <FDM/JSBSim/FGMassBalance.h>
60 #include <FDM/JSBSim/FGAerodynamics.h>
61 #include <FDM/JSBSim/FGLGear.h>
62 #include <FDM/JSBSim/FGPropertyManager.h>
66 FMAX (double a, double b)
72 /******************************************************************************/
74 FGJSBsim::FGJSBsim( double dt )
79 fdmex = new FGFDMExec( (FGPropertyManager*)globals->get_props() );
81 State = fdmex->GetState();
82 Atmosphere = fdmex->GetAtmosphere();
83 FCS = fdmex->GetFCS();
84 MassBalance = fdmex->GetMassBalance();
85 Propulsion = fdmex->GetPropulsion();
86 Aircraft = fdmex->GetAircraft();
87 Translation = fdmex->GetTranslation();
88 Rotation = fdmex->GetRotation();
89 Position = fdmex->GetPosition();
90 Auxiliary = fdmex->GetAuxiliary();
91 Aerodynamics = fdmex->GetAerodynamics();
92 GroundReactions = fdmex->GetGroundReactions();
97 SGPath aircraft_path( globals->get_fg_root() );
98 aircraft_path.append( "Aircraft" );
100 SGPath engine_path( globals->get_fg_root() );
101 engine_path.append( "Engine" );
104 result = fdmex->LoadModel( aircraft_path.str(),
106 fgGetString("/sim/aero") );
109 SG_LOG( SG_FLIGHT, SG_INFO, " loaded aero.");
111 SG_LOG( SG_FLIGHT, SG_INFO,
112 " aero does not exist (you may have mis-typed the name).");
116 SG_LOG( SG_FLIGHT, SG_INFO, "" );
117 SG_LOG( SG_FLIGHT, SG_INFO, "" );
118 SG_LOG( SG_FLIGHT, SG_INFO, "After loading aero definition file ..." );
120 int Neng = Propulsion->GetNumEngines();
121 SG_LOG( SG_FLIGHT, SG_INFO, "num engines = " << Neng );
123 if ( GroundReactions->GetNumGearUnits() <= 0 ) {
124 SG_LOG( SG_FLIGHT, SG_ALERT, "num gear units = "
125 << GroundReactions->GetNumGearUnits() );
126 SG_LOG( SG_FLIGHT, SG_ALERT, "This is a very bad thing because with 0 gear units, the ground trimming");
127 SG_LOG( SG_FLIGHT, SG_ALERT, "routine (coming up later in the code) will core dump.");
128 SG_LOG( SG_FLIGHT, SG_ALERT, "Halting the sim now, and hoping a solution will present itself soon!");
135 // Set initial fuel levels if provided.
136 for (unsigned int i = 0; i < Propulsion->GetNumTanks(); i++) {
137 SGPropertyNode * node = fgGetNode("/consumables/fuel/tank", i, true);
138 if (node->getChild("level-gal_us", 0, false) != 0)
139 Propulsion->GetTank(i)
140 ->SetContents(node->getDoubleValue("level-gal_us") * 6.6);
143 fgSetDouble("/fdm/trim/pitch-trim", FCS->GetPitchTrimCmd());
144 fgSetDouble("/fdm/trim/throttle", FCS->GetThrottleCmd(0));
145 fgSetDouble("/fdm/trim/aileron", FCS->GetDaCmd());
146 fgSetDouble("/fdm/trim/rudder", FCS->GetDrCmd());
148 startup_trim = fgGetNode("/sim/presets/trim", true);
150 trimmed = fgGetNode("/fdm/trim/trimmed", true);
151 trimmed->setBoolValue(false);
153 pitch_trim = fgGetNode("/fdm/trim/pitch-trim", true );
154 throttle_trim = fgGetNode("/fdm/trim/throttle", true );
155 aileron_trim = fgGetNode("/fdm/trim/aileron", true );
156 rudder_trim = fgGetNode("/fdm/trim/rudder", true );
158 stall_warning = fgGetNode("/sim/alarms/stall-warning",true);
159 stall_warning->setDoubleValue(0);
162 flap_pos_pct=fgGetNode("/surface-positions/flap-pos-norm",true);
163 elevator_pos_pct=fgGetNode("/surface-positions/elevator-pos-norm",true);
165 =fgGetNode("/surface-positions/left-aileron-pos-norm",true);
166 right_aileron_pos_pct
167 =fgGetNode("/surface-positions/right-aileron-pos-norm",true);
168 rudder_pos_pct=fgGetNode("/surface-positions/rudder-pos-norm",true);
170 =fgGetNode("/surface-positions/speedbrake-pos-norm",true);
171 spoilers_pos_pct=fgGetNode("/surface-positions/spoilers-pos-norm",true);
174 elevator_pos_pct->setDoubleValue(0);
175 left_aileron_pos_pct->setDoubleValue(0);
176 right_aileron_pos_pct->setDoubleValue(0);
177 rudder_pos_pct->setDoubleValue(0);
178 flap_pos_pct->setDoubleValue(0);
179 speedbrake_pos_pct->setDoubleValue(0);
180 spoilers_pos_pct->setDoubleValue(0);
182 temperature = fgGetNode("/environment/temperature-degc",true);
183 pressure = fgGetNode("/environment/pressure-inhg",true);
184 density = fgGetNode("/environment/density-slugft3",true);
185 turbulence = fgGetNode("environment/turbulence-norm",true);
187 wind_from_north= fgGetNode("/environment/wind-from-north-fps",true);
188 wind_from_east = fgGetNode("/environment/wind-from-east-fps" ,true);
189 wind_from_down = fgGetNode("/environment/wind-from-down-fps" ,true);
193 /******************************************************************************/
194 FGJSBsim::~FGJSBsim(void) {
198 /******************************************************************************/
200 // Initialize the JSBsim flight model, dt is the time increment for
201 // each subsequent iteration through the EOM
203 void FGJSBsim::init() {
205 SG_LOG( SG_FLIGHT, SG_INFO, "Starting and initializing JSBsim" );
207 // Explicitly call the superclass's
208 // init method first.
211 Atmosphere->UseInternal();
213 if (fgGetBool("/environment/params/control-fdm-atmosphere")) {
214 Atmosphere->UseExternal();
215 Atmosphere->SetExTemperature(
216 9.0/5.0*(temperature->getDoubleValue()+273.15) );
217 Atmosphere->SetExPressure(pressure->getDoubleValue()*70.726566);
218 Atmosphere->SetExDensity(density->getDoubleValue());
219 Atmosphere->SetTurbGain(turbulence->getDoubleValue() *
220 turbulence->getDoubleValue() *
223 Atmosphere->UseInternal();
227 fgic->SetVnorthFpsIC( wind_from_north->getDoubleValue() );
228 fgic->SetVeastFpsIC( wind_from_east->getDoubleValue() );
229 fgic->SetVdownFpsIC( wind_from_down->getDoubleValue() );
231 //Atmosphere->SetExTemperature(get_Static_temperature());
232 //Atmosphere->SetExPressure(get_Static_pressure());
233 //Atmosphere->SetExDensity(get_Density());
234 SG_LOG(SG_FLIGHT,SG_INFO,"T,p,rho: " << fdmex->GetAtmosphere()->GetTemperature()
235 << ", " << fdmex->GetAtmosphere()->GetPressure()
236 << ", " << fdmex->GetAtmosphere()->GetDensity() );
242 fdmex->RunIC(); //loop JSBSim once w/o integrating
243 copy_from_JSBsim(); //update the bus
245 SG_LOG( SG_FLIGHT, SG_INFO, " Initialized JSBSim with:" );
247 switch(fgic->GetSpeedSet()) {
249 SG_LOG(SG_FLIGHT,SG_INFO, " Vn,Ve,Vd= "
250 << Position->GetVn() << ", "
251 << Position->GetVe() << ", "
252 << Position->GetVd() << " ft/s");
255 SG_LOG(SG_FLIGHT,SG_INFO, " U,V,W= "
256 << Translation->GetUVW(1) << ", "
257 << Translation->GetUVW(2) << ", "
258 << Translation->GetUVW(3) << " ft/s");
261 SG_LOG(SG_FLIGHT,SG_INFO, " Mach: "
262 << Translation->GetMach() );
266 SG_LOG(SG_FLIGHT,SG_INFO, " Indicated Airspeed: "
267 << Auxiliary->GetVcalibratedKTS() << " knots" );
271 stall_warning->setDoubleValue(0);
273 SG_LOG( SG_FLIGHT, SG_INFO, " Bank Angle: "
274 << Rotation->Getphi()*RADTODEG << " deg" );
275 SG_LOG( SG_FLIGHT, SG_INFO, " Pitch Angle: "
276 << Rotation->Gettht()*RADTODEG << " deg" );
277 SG_LOG( SG_FLIGHT, SG_INFO, " True Heading: "
278 << Rotation->Getpsi()*RADTODEG << " deg" );
279 SG_LOG( SG_FLIGHT, SG_INFO, " Latitude: "
280 << Position->GetLatitude() << " deg" );
281 SG_LOG( SG_FLIGHT, SG_INFO, " Longitude: "
282 << Position->GetLongitude() << " deg" );
283 SG_LOG( SG_FLIGHT, SG_INFO, " Altitude: "
284 << Position->Geth() << " feet" );
285 SG_LOG( SG_FLIGHT, SG_INFO, " loaded initial conditions" );
287 SG_LOG( SG_FLIGHT, SG_INFO, " set dt" );
289 SG_LOG( SG_FLIGHT, SG_INFO, "Finished initializing JSBSim" );
291 SG_LOG( SG_FLIGHT, SG_INFO, "FGControls::get_gear_down()= " <<
292 globals->get_controls()->get_gear_down() );
298 /******************************************************************************/
300 // Run an iteration of the EOM (equations of motion)
303 FGJSBsim::update( double dt ) {
308 int multiloop = _calc_multiloop(dt);
312 // double save_alt = 0.0;
316 trimmed->setBoolValue(false);
319 if ( startup_trim->getBoolValue() ) {
320 SG_LOG(SG_FLIGHT, SG_INFO,
321 "Ready to trim, terrain altitude is: "
322 << cur_fdm_state->get_Runway_altitude() * SG_METER_TO_FEET );
323 fgic->SetTerrainAltitudeFtIC( cur_fdm_state->get_ground_elev_ft() );
326 fdmex->RunIC(); //apply any changes made through the set_ functions
331 for ( i=0; i < multiloop; i++ ) {
335 FGJSBBase::Message* msg;
336 while (fdmex->ReadMessage()) {
337 msg = fdmex->ProcessMessage();
339 case FGJSBBase::Message::eText:
340 SG_LOG( SG_FLIGHT, SG_INFO, msg->messageId << ": " << msg->text );
342 case FGJSBBase::Message::eBool:
343 SG_LOG( SG_FLIGHT, SG_INFO, msg->messageId << ": " << msg->text << " " << msg->bVal );
345 case FGJSBBase::Message::eInteger:
346 SG_LOG( SG_FLIGHT, SG_INFO, msg->messageId << ": " << msg->text << " " << msg->iVal );
348 case FGJSBBase::Message::eDouble:
349 SG_LOG( SG_FLIGHT, SG_INFO, msg->messageId << ": " << msg->text << " " << msg->dVal );
352 SG_LOG( SG_FLIGHT, SG_INFO, "Unrecognized message type." );
357 // translate JSBsim back to FG structure so that the
358 // autopilot (and the rest of the sim can use the updated values
362 /******************************************************************************/
364 // Convert from the FGInterface struct to the JSBsim generic_ struct
366 bool FGJSBsim::copy_to_JSBsim() {
369 // copy control positions into the JSBsim structure
371 FCS->SetDaCmd( globals->get_controls()->get_aileron());
372 FCS->SetRollTrimCmd( globals->get_controls()->get_aileron_trim() );
373 FCS->SetDeCmd( globals->get_controls()->get_elevator());
374 FCS->SetPitchTrimCmd( globals->get_controls()->get_elevator_trim() );
375 FCS->SetDrCmd( -globals->get_controls()->get_rudder() );
376 FCS->SetYawTrimCmd( -globals->get_controls()->get_rudder_trim() );
377 FCS->SetDfCmd( globals->get_controls()->get_flaps() );
378 FCS->SetDsbCmd( globals->get_controls()->get_speedbrake() );
379 FCS->SetDspCmd( globals->get_controls()->get_spoilers() );
381 // Parking brake sets minimum braking
383 double parking_brake = globals->get_controls()->get_parking_brake();
384 FCS->SetLBrake(FMAX(globals->get_controls()->get_brake(0), parking_brake));
385 FCS->SetRBrake(FMAX(globals->get_controls()->get_brake(1), parking_brake));
386 FCS->SetCBrake( globals->get_controls()->get_brake(2) );
388 FCS->SetGearCmd( globals->get_controls()->get_gear_down());
389 for (i = 0; i < Propulsion->GetNumEngines(); i++) {
390 FGEngine * eng = Propulsion->GetEngine(i);
391 SGPropertyNode * node = fgGetNode("engines/engine", i, true);
392 FCS->SetThrottleCmd(i, globals->get_controls()->get_throttle(i));
393 FCS->SetMixtureCmd(i, globals->get_controls()->get_mixture(i));
394 FCS->SetPropAdvanceCmd(i, globals->get_controls()->get_prop_advance(i));
395 Propulsion->GetThruster(i)->SetRPM(node->getDoubleValue("rpm"));
396 eng->SetMagnetos( globals->get_controls()->get_magnetos(i) );
397 eng->SetStarter( globals->get_controls()->get_starter(i) );
398 eng->SetAugmentation( globals->get_controls()->get_augmentation(i) );
399 eng->SetReverse( globals->get_controls()->get_reverser(i) );
400 eng->SetInjection( globals->get_controls()->get_water_injection(i) );
401 eng->SetIgnition( globals->get_controls()->get_ignition(i) );
402 eng->SetCutoff( globals->get_controls()->get_cutoff(i) );
403 eng->SetNitrous( globals->get_controls()->get_nitrous_injection(i) );
406 _set_Runway_altitude( cur_fdm_state->get_Runway_altitude() );
407 Position->SetSeaLevelRadius( get_Sea_level_radius() );
408 Position->SetRunwayRadius( get_Runway_altitude()
409 + get_Sea_level_radius() );
411 Atmosphere->SetExTemperature(
412 9.0/5.0*(temperature->getDoubleValue()+273.15) );
413 Atmosphere->SetExPressure(pressure->getDoubleValue()*70.726566);
414 Atmosphere->SetExDensity(density->getDoubleValue());
415 Atmosphere->SetTurbGain(turbulence->getDoubleValue() *
416 turbulence->getDoubleValue() *
419 Atmosphere->SetWindNED( wind_from_north->getDoubleValue(),
420 wind_from_east->getDoubleValue(),
421 wind_from_down->getDoubleValue() );
422 // SG_LOG(SG_FLIGHT,SG_INFO, "Wind NED: "
423 // << get_V_north_airmass() << ", "
424 // << get_V_east_airmass() << ", "
425 // << get_V_down_airmass() );
427 for (i = 0; i < Propulsion->GetNumTanks(); i++) {
428 SGPropertyNode * node = fgGetNode("/consumables/fuel/tank", i, true);
429 FGTank * tank = Propulsion->GetTank(i);
430 tank->SetContents(node->getDoubleValue("level-gal_us") * 6.6);
431 // tank->SetContents(node->getDoubleValue("level-lb"));
437 /******************************************************************************/
439 // Convert from the JSBsim generic_ struct to the FGInterface struct
441 bool FGJSBsim::copy_from_JSBsim() {
444 _set_Inertias( MassBalance->GetMass(),
445 MassBalance->GetIxx(),
446 MassBalance->GetIyy(),
447 MassBalance->GetIzz(),
448 MassBalance->GetIxz() );
450 _set_CG_Position( MassBalance->GetXYZcg(1),
451 MassBalance->GetXYZcg(2),
452 MassBalance->GetXYZcg(3) );
454 _set_Accels_Body( Aircraft->GetBodyAccel()(1),
455 Aircraft->GetBodyAccel()(2),
456 Aircraft->GetBodyAccel()(3) );
458 //_set_Accels_CG_Body( Aircraft->GetBodyAccel()(1),
459 // Aircraft->GetBodyAccel()(2),
460 // Aircraft->GetBodyAccel()(3) );
462 _set_Accels_CG_Body_N ( Aircraft->GetNcg()(1),
463 Aircraft->GetNcg()(2),
464 Aircraft->GetNcg()(3) );
466 _set_Accels_Pilot_Body( Auxiliary->GetPilotAccel()(1),
467 Auxiliary->GetPilotAccel()(2),
468 Auxiliary->GetPilotAccel()(3) );
470 // _set_Accels_Pilot_Body_N( Auxiliary->GetPilotAccel()(1)/32.1739,
471 // Auxiliary->GetNpilot(2)/32.1739,
472 // Auxiliary->GetNpilot(3)/32.1739 );
474 _set_Nlf( Aircraft->GetNlf() );
478 _set_Velocities_Local( Position->GetVn(),
482 _set_Velocities_Wind_Body( Translation->GetUVW(1),
483 Translation->GetUVW(2),
484 Translation->GetUVW(3) );
486 _set_V_rel_wind( Translation->GetVt() );
488 _set_V_equiv_kts( Auxiliary->GetVequivalentKTS() );
490 // _set_V_calibrated( Auxiliary->GetVcalibratedFPS() );
492 _set_V_calibrated_kts( Auxiliary->GetVcalibratedKTS() );
494 _set_V_ground_speed( Position->GetVground() );
496 _set_Omega_Body( Rotation->GetPQR(1),
498 Rotation->GetPQR(3) );
500 _set_Euler_Rates( Rotation->GetEulerRates(1),
501 Rotation->GetEulerRates(2),
502 Rotation->GetEulerRates(3) );
504 _set_Geocentric_Rates(Position->GetLatitudeDot(),
505 Position->GetLongitudeDot(),
506 Position->Gethdot() );
508 _set_Mach_number( Translation->GetMach() );
511 _updateGeocentricPosition( Position->GetLatitude(),
512 Position->GetLongitude(),
515 _set_Altitude_AGL( Position->GetDistanceAGL() );
517 _set_Euler_Angles( Rotation->Getphi(),
519 Rotation->Getpsi() );
521 _set_Alpha( Translation->Getalpha() );
522 _set_Beta( Translation->Getbeta() );
525 _set_Gamma_vert_rad( Position->GetGamma() );
526 // set_Gamma_horiz_rad( Gamma_horiz_rad );
528 _set_Earth_position_angle( Auxiliary->GetEarthPositionAngle() );
530 _set_Climb_Rate( Position->Gethdot() );
533 for ( i = 1; i <= 3; i++ ) {
534 for ( j = 1; j <= 3; j++ ) {
535 _set_T_Local_to_Body( i, j, State->GetTl2b(i,j) );
539 // Copy the engine values from JSBSim.
540 for( i=0; i < Propulsion->GetNumEngines(); i++ ) {
541 SGPropertyNode * node = fgGetNode("engines/engine", i, true);
542 FGEngine * eng = Propulsion->GetEngine(i);
543 FGThruster * thrust = Propulsion->GetThruster(i);
545 node->setDoubleValue("mp-osi", eng->getManifoldPressure_inHg());
546 node->setDoubleValue("rpm", thrust->GetRPM());
547 node->setDoubleValue("egt-degf", eng->getExhaustGasTemp_degF());
548 node->setDoubleValue("fuel-flow-gph", eng->getFuelFlow_gph());
549 node->setDoubleValue("cht-degf", eng->getCylinderHeadTemp_degF());
550 node->setDoubleValue("oil-temperature-degf", eng->getOilTemp_degF());
551 node->setDoubleValue("oil-pressure-psi", eng->getOilPressure_psi());
552 node->setDoubleValue("thrust_lb", eng->GetThrust());
553 node->setDoubleValue("N1", eng->GetN1());
554 node->setDoubleValue("N2", eng->GetN2());
555 node->setDoubleValue("EGT_degC", eng->GetEGT());
556 node->setDoubleValue("fuel-flow_pph", eng->getFuelFlow_pph());
557 node->setDoubleValue("nozzle-pos-norm", eng->GetNozzle());
558 node->setDoubleValue("inlet-pos-norm", eng->GetInlet());
559 node->setBoolValue("running", eng->GetRunning());
560 node->setBoolValue("cranking", eng->GetCranking());
561 node->setBoolValue("ignition", eng->GetIgnition());
562 node->setBoolValue("augmentation", eng->GetAugmentation());
563 node->setBoolValue("water-injection", eng->GetInjection());
564 node->setBoolValue("reversed", eng->GetReversed());
565 node->setBoolValue("cutoff", eng->GetCutoff());
566 node->setBoolValue("nitrous", eng->GetNitrous());
569 static const SGPropertyNode *fuel_freeze
570 = fgGetNode("/sim/freeze/fuel");
572 // Copy the fuel levels from JSBSim if fuel
573 // freeze not enabled.
574 if ( ! fuel_freeze->getBoolValue() ) {
575 for (i = 0; i < Propulsion->GetNumTanks(); i++) {
576 SGPropertyNode * node
577 = fgGetNode("/consumables/fuel/tank", i, true);
578 double contents = Propulsion->GetTank(i)->GetContents();
579 node->setDoubleValue("level-gal_us", contents/6.6);
580 node->setDoubleValue("level-lb", contents);
581 // node->setDoubleValue("temperature_degC",
587 stall_warning->setDoubleValue( Aerodynamics->GetStallWarn() );
589 /* elevator_pos_deg->setDoubleValue( FCS->GetDePos()*SG_RADIANS_TO_DEGREES );
590 left_aileron_pos_deg->setDoubleValue( FCS->GetDaLPos()*SG_RADIANS_TO_DEGREES );
591 right_aileron_pos_deg->setDoubleValue( FCS->GetDaRPos()*SG_RADIANS_TO_DEGREES );
592 rudder_pos_deg->setDoubleValue( -1*FCS->GetDrPos()*SG_RADIANS_TO_DEGREES );
593 flap_pos_deg->setDoubleValue( FCS->GetDfPos() ); */
596 elevator_pos_pct->setDoubleValue( FCS->GetDePos(ofNorm) );
597 left_aileron_pos_pct->setDoubleValue( FCS->GetDaLPos(ofNorm) );
598 right_aileron_pos_pct->setDoubleValue( -1*FCS->GetDaLPos(ofNorm) );
599 rudder_pos_pct->setDoubleValue( -1*FCS->GetDrPos(ofNorm) );
600 flap_pos_pct->setDoubleValue( FCS->GetDfPos(ofNorm) );
601 speedbrake_pos_pct->setDoubleValue( FCS->GetDsbPos(ofNorm) );
602 spoilers_pos_pct->setDoubleValue( FCS->GetDspPos(ofNorm) );
608 bool FGJSBsim::ToggleDataLogging(void) {
609 return fdmex->GetOutput()->Toggle();
613 bool FGJSBsim::ToggleDataLogging(bool state) {
615 fdmex->GetOutput()->Enable();
618 fdmex->GetOutput()->Disable();
625 void FGJSBsim::set_Latitude(double lat) {
626 static const SGPropertyNode *altitude = fgGetNode("/position/altitude-ft");
628 double sea_level_radius_meters, lat_geoc;
630 if ( altitude->getDoubleValue() > -9990 ) {
631 alt = altitude->getDoubleValue();
637 SG_LOG(SG_FLIGHT,SG_INFO,"FGJSBsim::set_Latitude: " << lat );
638 SG_LOG(SG_FLIGHT,SG_INFO," cur alt (ft) = " << alt );
640 sgGeodToGeoc( lat, alt * SG_FEET_TO_METER,
641 &sea_level_radius_meters, &lat_geoc );
642 _set_Sea_level_radius( sea_level_radius_meters * SG_METER_TO_FEET );
643 fgic->SetSeaLevelRadiusFtIC( sea_level_radius_meters * SG_METER_TO_FEET );
644 _set_Runway_altitude( cur_fdm_state->get_Runway_altitude() );
645 fgic->SetTerrainAltitudeFtIC( cur_fdm_state->get_ground_elev_ft() );
646 fgic->SetLatitudeRadIC( lat_geoc );
650 void FGJSBsim::set_Longitude(double lon) {
652 SG_LOG(SG_FLIGHT,SG_INFO,"FGJSBsim::set_Longitude: " << lon );
654 fgic->SetLongitudeRadIC( lon );
655 _set_Runway_altitude( cur_fdm_state->get_Runway_altitude() );
656 fgic->SetTerrainAltitudeFtIC( cur_fdm_state->get_ground_elev_ft() );
660 void FGJSBsim::set_Altitude(double alt) {
661 static const SGPropertyNode *latitude = fgGetNode("/position/latitude-deg");
663 double sea_level_radius_meters,lat_geoc;
665 SG_LOG(SG_FLIGHT,SG_INFO, "FGJSBsim::set_Altitude: " << alt );
666 SG_LOG(SG_FLIGHT,SG_INFO, " lat (deg) = " << latitude->getDoubleValue() );
669 sgGeodToGeoc( latitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS, alt,
670 &sea_level_radius_meters, &lat_geoc);
671 _set_Sea_level_radius( sea_level_radius_meters * SG_METER_TO_FEET );
672 fgic->SetSeaLevelRadiusFtIC( sea_level_radius_meters * SG_METER_TO_FEET );
673 _set_Runway_altitude( cur_fdm_state->get_Runway_altitude() );
674 fgic->SetTerrainAltitudeFtIC( cur_fdm_state->get_ground_elev_ft() );
675 SG_LOG(SG_FLIGHT, SG_INFO,
676 "Terrain altitude: " << cur_fdm_state->get_Runway_altitude() * SG_METER_TO_FEET );
677 fgic->SetLatitudeRadIC( lat_geoc );
678 fgic->SetAltitudeFtIC(alt);
682 void FGJSBsim::set_V_calibrated_kts(double vc) {
683 SG_LOG(SG_FLIGHT,SG_INFO, "FGJSBsim::set_V_calibrated_kts: " << vc );
686 fgic->SetVcalibratedKtsIC(vc);
690 void FGJSBsim::set_Mach_number(double mach) {
691 SG_LOG(SG_FLIGHT,SG_INFO, "FGJSBsim::set_Mach_number: " << mach );
694 fgic->SetMachIC(mach);
698 void FGJSBsim::set_Velocities_Local( double north, double east, double down ){
699 SG_LOG(SG_FLIGHT,SG_INFO, "FGJSBsim::set_Velocities_Local: "
700 << north << ", " << east << ", " << down );
703 fgic->SetVnorthFpsIC(north);
704 fgic->SetVeastFpsIC(east);
705 fgic->SetVdownFpsIC(down);
709 void FGJSBsim::set_Velocities_Wind_Body( double u, double v, double w){
710 SG_LOG(SG_FLIGHT,SG_INFO, "FGJSBsim::set_Velocities_Wind_Body: "
711 << u << ", " << v << ", " << w );
714 fgic->SetUBodyFpsIC(u);
715 fgic->SetVBodyFpsIC(v);
716 fgic->SetWBodyFpsIC(w);
721 void FGJSBsim::set_Euler_Angles( double phi, double theta, double psi ) {
722 SG_LOG(SG_FLIGHT,SG_INFO, "FGJSBsim::set_Euler_Angles: "
723 << phi << ", " << theta << ", " << psi );
726 fgic->SetPitchAngleRadIC(theta);
727 fgic->SetRollAngleRadIC(phi);
728 fgic->SetTrueHeadingRadIC(psi);
733 void FGJSBsim::set_Climb_Rate( double roc) {
734 SG_LOG(SG_FLIGHT,SG_INFO, "FGJSBsim::set_Climb_Rate: " << roc );
737 //since both climb rate and flight path angle are set in the FG
738 //startup sequence, something is needed to keep one from cancelling
740 if( !(fabs(roc) > 1 && fabs(fgic->GetFlightPathAngleRadIC()) < 0.01) ) {
741 fgic->SetClimbRateFpsIC(roc);
746 void FGJSBsim::set_Gamma_vert_rad( double gamma) {
747 SG_LOG(SG_FLIGHT,SG_INFO, "FGJSBsim::set_Gamma_vert_rad: " << gamma );
750 if( !(fabs(gamma) < 0.01 && fabs(fgic->GetClimbRateFpsIC()) > 1) ) {
751 fgic->SetFlightPathAngleRadIC(gamma);
756 void FGJSBsim::init_gear(void ) {
758 FGGroundReactions* gr=fdmex->GetGroundReactions();
759 int Ngear=GroundReactions->GetNumGearUnits();
760 for (int i=0;i<Ngear;i++) {
761 SGPropertyNode * node = fgGetNode("gear/gear", i, true);
762 node->setDoubleValue("xoffset-in",
763 gr->GetGearUnit(i)->GetBodyLocation()(1));
764 node->setDoubleValue("yoffset-in",
765 gr->GetGearUnit(i)->GetBodyLocation()(2));
766 node->setDoubleValue("zoffset-in",
767 gr->GetGearUnit(i)->GetBodyLocation()(3));
768 node->setBoolValue("wow", gr->GetGearUnit(i)->GetWOW());
769 node->setBoolValue("has-brake", gr->GetGearUnit(i)->GetBrakeGroup() > 0);
770 node->setDoubleValue("position-norm", FCS->GetGearPos());
774 void FGJSBsim::update_gear(void) {
776 FGGroundReactions* gr=fdmex->GetGroundReactions();
777 int Ngear=GroundReactions->GetNumGearUnits();
778 for (int i=0;i<Ngear;i++) {
779 SGPropertyNode * node = fgGetNode("gear/gear", i, true);
780 node->getChild("wow", 0, true)
781 ->setBoolValue(gr->GetGearUnit(i)->GetWOW());
782 node->getChild("position-norm", 0, true)
783 ->setDoubleValue(FCS->GetGearPos());
787 void FGJSBsim::do_trim(void) {
790 if( fgGetBool("/sim/presets/onground") ) {
791 fgic->SetVcalibratedKtsIC(0.0);
792 fgtrim=new FGTrim(fdmex,tGround);
794 fgtrim=new FGTrim(fdmex,tLongitudinal);
796 if( !fgtrim->DoTrim() ) {
800 trimmed->setBoolValue(true);
802 State->ReportState();
804 pitch_trim->setDoubleValue( FCS->GetPitchTrimCmd() );
805 throttle_trim->setDoubleValue( FCS->GetThrottleCmd(0) );
806 aileron_trim->setDoubleValue( FCS->GetDaCmd() );
807 rudder_trim->setDoubleValue( FCS->GetDrCmd() );
809 globals->get_controls()->set_elevator_trim(FCS->GetPitchTrimCmd());
810 globals->get_controls()->set_elevator(FCS->GetDeCmd());
811 globals->get_controls()->set_throttle(FGControls::ALL_ENGINES,
812 FCS->GetThrottleCmd(0));
814 globals->get_controls()->set_aileron(FCS->GetDaCmd());
815 globals->get_controls()->set_rudder( FCS->GetDrCmd());
817 SG_LOG( SG_FLIGHT, SG_INFO, " Trim complete" );
820 void FGJSBsim::update_ic(void) {
822 fgic->SetLatitudeRadIC(get_Lat_geocentric() );
823 fgic->SetLongitudeRadIC( get_Longitude() );
824 fgic->SetAltitudeFtIC( get_Altitude() );
825 fgic->SetVcalibratedKtsIC( get_V_calibrated_kts() );
826 fgic->SetPitchAngleRadIC( get_Theta() );
827 fgic->SetRollAngleRadIC( get_Phi() );
828 fgic->SetTrueHeadingRadIC( get_Psi() );
829 fgic->SetClimbRateFpsIC( get_Climb_Rate() );