1 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3 Header: FGInitialCondition.h
7 ------------- Copyright (C) 1999 Anthony K. Peden (apeden@earthlink.net) -------------
9 This program is free software; you can redistribute it and/or modify it under
10 the terms of the GNU General Public License as published by the Free Software
11 Foundation; either version 2 of the License, or (at your option) any later
14 This program is distributed in the hope that it will be useful, but WITHOUT
15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
16 FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
19 You should have received a copy of the GNU General Public License along with
20 this program; if not, write to the Free Software Foundation, Inc., 59 Temple
21 Place - Suite 330, Boston, MA 02111-1307, USA.
23 Further information about the GNU General Public License can also be found on
24 the world wide web at http://www.gnu.org.
27 --------------------------------------------------------------------------------
30 FUNCTIONAL DESCRIPTION
31 --------------------------------------------------------------------------------
33 The purpose of this class is to take a set of initial conditions and provide
34 a kinematically consistent set of body axis velocity components, euler
35 angles, and altitude. This class does not attempt to trim the model i.e.
36 the sim will most likely start in a very dynamic state (unless, of course,
37 you have chosen your IC's wisely) even after setting it up with this class.
39 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
41 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
43 #ifndef FGINITIALCONDITION_H
44 #define FGINITIALCONDITION_H
46 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
48 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
50 #include <FGFDMExec.h>
51 #include <FGJSBBase.h>
52 #include <math/FGColumnVector3.h>
54 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
56 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
58 #define ID_INITIALCONDITION "$Id$"
60 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
62 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
66 typedef enum { setvt, setvc, setve, setmach, setuvw, setned, setvg } speedset;
67 typedef enum { setwned, setwmd, setwhc } windset;
69 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
71 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
73 /** Takes a set of initial conditions and provide a kinematically consistent set
74 of body axis velocity components, euler angles, and altitude. This class
75 does not attempt to trim the model i.e. the sim will most likely start in a
76 very dynamic state (unless, of course, you have chosen your IC's wisely, or
77 started on the ground) even after setting it up with this class.
81 With a valid object of FGFDMExec and an aircraft model loaded:
84 FGInitialCondition fgic=new FGInitialCondition(FDMExec);
85 fgic->SetVcalibratedKtsIC()
86 fgic->SetAltitudeFtIC();
89 FDMExec->GetState()->Initialize(fgic)
93 //or to loop the sim w/o integrating
99 Since vc, ve, vt, and mach all represent speed, the remaining
100 three are recalculated each time one of them is set (using the
101 current altitude). The most recent speed set is remembered so
102 that if and when altitude is reset, the last set speed is used
103 to recalculate the remaining three. Setting any of the body
104 components forces a recalculation of vt and vt then becomes the
105 most recent speed set.
107 <h2>Alpha,Gamma, and Theta</h2>
109 This class assumes that it will be used to set up the sim for a
110 steady, zero pitch rate condition. Since any two of those angles
111 specifies the third gamma (flight path angle) is favored when setting
112 alpha and theta and alpha is favored when setting gamma. i.e.
114 - set alpha : recalculate theta using gamma as currently set
115 - set theta : recalculate alpha using gamma as currently set
116 - set gamma : recalculate theta using alpha as currently set
118 The idea being that gamma is most interesting to pilots (since it
119 is indicative of climb rate).
121 Setting climb rate is, for the purpose of this discussion,
122 considered equivalent to setting gamma.
124 These are the items that can be set in an initialization file:
126 - ubody (velocity, ft/sec)
127 - vbody (velocity, ft/sec)
128 - wbody (velocity, ft/sec)
129 - latitude (position, degrees)
130 - longitude (position, degrees)
131 - phi (orientation, degrees)
132 - theta (orientation, degrees)
133 - psi (orientation, degrees)
134 - alpha (angle, degrees)
135 - beta (angle, degrees)
136 - gamma (angle, degrees)
137 - roc (vertical velocity, ft/sec)
138 - altitude (altitude, ft)
139 - winddir (wind from-angle, degrees)
140 - vwind (magnitude wind speed, ft/sec)
141 - hwind (headwind speed, knots)
142 - xwind (crosswind speed, knots)
143 - vc (calibrated airspeed, ft/sec)
145 - vground (ground speed, ft/sec)
149 @property ic/vc-kts (read/write) Calibrated airspeed initial condition in knots
150 @property ic/ve-kts (read/write) Knots equivalent airspeed initial condition
151 @property ic/vg-kts (read/write) Ground speed initial condition in knots
152 @property ic/vt-kts (read/write) True airspeed initial condition in knots
153 @property ic/mach (read/write) Mach initial condition
154 @property ic/roc-fpm (read/write) Rate of climb initial condition in feet/minute
155 @property ic/gamma-deg (read/write) Flightpath angle initial condition in degrees
156 @property ic/alpha-deg (read/write) Angle of attack initial condition in degrees
157 @property ic/beta-deg (read/write) Angle of sideslip initial condition in degrees
158 @property ic/theta-deg (read/write) Pitch angle initial condition in degrees
159 @property ic/phi-deg (read/write) Roll angle initial condition in degrees
160 @property ic/psi-true-deg (read/write) Heading angle initial condition in degrees
161 @property ic/lat-gc-deg (read/write) Latitude initial condition in degrees
162 @property ic/long-gc-deg (read/write) Longitude initial condition in degrees
163 @property ic/h-sl-ft (read/write) Height above sea level initial condition in feet
164 @property ic/h-agl-ft (read/write) Height above ground level initial condition in feet
165 @property ic/sea-level-radius-ft (read/write) Radius of planet at sea level in feet
166 @property ic/terrain-altitude-ft (read/write) Terrain elevation above sea level in feet
167 @property ic/vg-fps (read/write) Ground speed initial condition in feet/second
168 @property ic/vt-fps (read/write) True airspeed initial condition in feet/second
169 @property ic/vw-bx-fps (read/write) Wind velocity initial condition in Body X frame in feet/second
170 @property ic/vw-by-fps (read/write) Wind velocity initial condition in Body Y frame in feet/second
171 @property ic/vw-bz-fps (read/write) Wind velocity initial condition in Body Z frame in feet/second
172 @property ic/vw-north-fps (read/write) Wind northward velocity initial condition in feet/second
173 @property ic/vw-east-fps (read/write) Wind eastward velocity initial condition in feet/second
174 @property ic/vw-down-fps (read/write) Wind downward velocity initial condition in feet/second
175 @property ic/vw-mag-fps (read/write) Wind velocity magnitude initial condition in feet/sec.
176 @property ic/vw-dir-deg (read/write) Wind direction initial condition, in degrees from north
177 @property ic/roc-fps (read/write) Rate of climb initial condition, in feet/second
178 @property ic/u-fps (read/write) Body frame x-axis velocity initial condition in feet/second
179 @property ic/v-fps (read/write) Body frame y-axis velocity initial condition in feet/second
180 @property ic/w-fps (read/write) Body frame z-axis velocity initial condition in feet/second
181 @property ic/gamma-rad (read/write) Flight path angle initial condition in radians
182 @property ic/alpha-rad (read/write) Angle of attack initial condition in radians
183 @property ic/theta-rad (read/write) Pitch angle initial condition in radians
184 @property ic/beta-rad (read/write) Angle of sideslip initial condition in radians
185 @property ic/phi-rad (read/write) Roll angle initial condition in radians
186 @property ic/psi-true-rad (read/write) Heading angle initial condition in radians
187 @property ic/lat-gc-rad (read/write) Geocentric latitude initial condition in radians
188 @property ic/long-gc-rad (read/write) Longitude initial condition in radians
189 @property ic/p-rad_sec (read/write) Roll rate initial condition in radians/second
190 @property ic/q-rad_sec (read/write) Pitch rate initial condition in radians/second
191 @property ic/r-rad_sec (read/write) Yaw rate initial condition in radians/second
197 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
199 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
201 class FGInitialCondition : public FGJSBBase
205 FGInitialCondition(FGFDMExec *fdmex);
207 ~FGInitialCondition();
209 /** Set calibrated airspeed initial condition in knots.
210 @param vc Calibrated airspeed in knots */
211 void SetVcalibratedKtsIC(double vc);
213 /** Set equivalent airspeed initial condition in knots.
214 @param ve Equivalent airspeed in knots */
215 void SetVequivalentKtsIC(double ve);
217 /** Set true airspeed initial condition in knots.
218 @param vt True airspeed in knots */
219 inline void SetVtrueKtsIC(double vt) { SetVtrueFpsIC(vt*ktstofps); }
221 /** Set ground speed initial condition in knots.
222 @param vg Ground speed in knots */
223 inline void SetVgroundKtsIC(double vg) { SetVgroundFpsIC(vg*ktstofps); }
225 /** Set mach initial condition.
226 @param mach Mach number */
227 void SetMachIC(double mach);
229 /** Sets angle of attack initial condition in degrees.
230 @param a Alpha in degrees */
231 inline void SetAlphaDegIC(double a) { SetAlphaRadIC(a*degtorad); }
233 /** Sets angle of sideslip initial condition in degrees.
234 @param B Beta in degrees */
235 inline void SetBetaDegIC(double B) { SetBetaRadIC(B*degtorad);}
237 /** Sets pitch angle initial condition in degrees.
238 @param theta Theta (pitch) angle in degrees */
239 inline void SetThetaDegIC(double theta) { SetThetaRadIC(theta*degtorad); }
241 /** Sets the roll angle initial condition in degrees.
242 @param phi roll angle in degrees */
243 inline void SetPhiDegIC(double phi) { SetPhiRadIC(phi*degtorad);}
245 /** Sets the heading angle initial condition in degrees.
246 @param psi Heading angle in degrees */
247 inline void SetPsiDegIC(double psi){ SetPsiRadIC(psi*degtorad); }
249 /** Sets the climb rate initial condition in feet/minute.
250 @param roc Rate of Climb in feet/minute */
251 void SetClimbRateFpmIC(double roc);
253 /** Sets the flight path angle initial condition in degrees.
254 @param gamma Flight path angle in degrees */
255 inline void SetFlightPathAngleDegIC(double gamma) { SetFlightPathAngleRadIC(gamma*degtorad); }
257 /** Sets the altitude initial condition in feet.
258 @param alt Altitude in feet */
259 void SetAltitudeFtIC(double alt);
261 /** Sets the initial Altitude above ground level.
262 @param agl Altitude above ground level in feet */
263 void SetAltitudeAGLFtIC(double agl);
265 /** Sets the initial sea level radius from planet center
266 @param sl_rad sea level radius in feet */
267 void SetSeaLevelRadiusFtIC(double sl_rad);
269 /** Sets the initial terrain elevation.
270 @param elev Initial terrain elevation in feet */
271 void SetTerrainAltitudeFtIC(double elev);
273 /** Sets the initial latitude.
274 @param lat Initial latitude in degrees */
275 inline void SetLatitudeDegIC(double lat) { latitude=lat*degtorad; }
277 /** Sets the initial longitude.
278 @param lon Initial longitude in degrees */
279 inline void SetLongitudeDegIC(double lon) { longitude=lon*degtorad; }
281 /** Gets the initial calibrated airspeed.
282 @return Initial calibrated airspeed in knots */
283 inline double GetVcalibratedKtsIC(void) const { return vc*fpstokts; }
285 /** Gets the initial equivalent airspeed.
286 @return Initial equivalent airspeed in knots */
287 inline double GetVequivalentKtsIC(void) const { return ve*fpstokts; }
289 /** Gets the initial ground speed.
290 @return Initial ground speed in knots */
291 inline double GetVgroundKtsIC(void) const { return vg*fpstokts; }
293 /** Gets the initial true velocity.
294 @return Initial true airspeed in knots. */
295 inline double GetVtrueKtsIC(void) const { return vt*fpstokts; }
297 /** Gets the initial mach.
298 @return Initial mach number */
299 inline double GetMachIC(void) const { return mach; }
301 /** Gets the initial climb rate.
302 @return Initial climb rate in feet/minute */
303 inline double GetClimbRateFpmIC(void) const { return hdot*60; }
305 /** Gets the initial flight path angle.
306 @return Initial flight path angle in degrees */
307 inline double GetFlightPathAngleDegIC(void)const { return gamma*radtodeg; }
309 /** Gets the initial angle of attack.
310 @return Initial alpha in degrees */
311 inline double GetAlphaDegIC(void) const { return alpha*radtodeg; }
313 /** Gets the initial sideslip angle.
314 @return Initial beta in degrees */
315 inline double GetBetaDegIC(void) const { return beta*radtodeg; }
317 /** Gets the initial pitch angle.
318 @return Initial pitch angle in degrees */
319 inline double GetThetaDegIC(void) const { return theta*radtodeg; }
321 /** Gets the initial roll angle.
322 @return Initial phi in degrees */
323 inline double GetPhiDegIC(void) const { return phi*radtodeg; }
325 /** Gets the initial heading angle.
326 @return Initial psi in degrees */
327 inline double GetPsiDegIC(void) const { return psi*radtodeg; }
329 /** Gets the initial latitude.
330 @return Initial geocentric latitude in degrees */
331 inline double GetLatitudeDegIC(void) const { return latitude*radtodeg; }
333 /** Gets the initial longitude.
334 @return Initial longitude in degrees */
335 inline double GetLongitudeDegIC(void) const { return longitude*radtodeg; }
337 /** Gets the initial altitude.
338 @return Initial altitude in feet. */
339 inline double GetAltitudeFtIC(void) const { return altitude; }
341 /** Gets the initial altitude above ground level.
342 @return Initial altitude AGL in feet */
343 inline double GetAltitudeAGLFtIC(void) const { return altitude - terrain_altitude; }
345 /** Gets the initial sea level radius.
346 @return Initial sea level radius */
347 inline double GetSeaLevelRadiusFtIC(void) const { return sea_level_radius; }
349 /** Gets the initial terrain elevation.
350 @return Initial terrain elevation in feet */
351 inline double GetTerrainAltitudeFtIC(void) const { return terrain_altitude; }
353 /** Sets the initial ground speed.
354 @param vg Initial ground speed in feet/second */
355 void SetVgroundFpsIC(double vg);
357 /** Sets the initial true airspeed.
358 @param vt Initial true airspeed in feet/second */
359 void SetVtrueFpsIC(double vt);
361 /** Sets the initial body axis X velocity.
362 @param ubody Initial X velocity in feet/second */
363 void SetUBodyFpsIC(double ubody);
365 /** Sets the initial body axis Y velocity.
366 @param vbody Initial Y velocity in feet/second */
367 void SetVBodyFpsIC(double vbody);
369 /** Sets the initial body axis Z velocity.
370 @param wbody Initial Z velocity in feet/second */
371 void SetWBodyFpsIC(double wbody);
373 /** Sets the initial local axis north velocity.
374 @param vn Initial north velocity in feet/second */
375 void SetVnorthFpsIC(double vn);
377 /** Sets the initial local axis east velocity.
378 @param ve Initial east velocity in feet/second */
379 void SetVeastFpsIC(double ve);
381 /** Sets the initial local axis down velocity.
382 @param vd Initial down velocity in feet/second */
383 void SetVdownFpsIC(double vd);
385 /** Sets the initial roll rate.
386 @param P Initial roll rate in radians/second */
387 void SetPRadpsIC(double P) { p = P; }
389 /** Sets the initial pitch rate.
390 @param Q Initial pitch rate in radians/second */
391 void SetQRadpsIC(double Q) { q = Q; }
393 /** Sets the initial yaw rate.
394 @param R initial yaw rate in radians/second */
395 void SetRRadpsIC(double R) { r = R; }
397 /** Sets the initial wind velocity.
398 @param wN Initial wind velocity in local north direction, feet/second
399 @param wE Initial wind velocity in local east direction, feet/second
400 @param wD Initial wind velocity in local down direction, feet/second */
401 void SetWindNEDFpsIC(double wN, double wE, double wD);
403 /** Sets the initial total wind speed.
404 @param mag Initial wind velocity magnitude in knots */
405 void SetWindMagKtsIC(double mag);
407 /** Sets the initial wind direction.
408 @param dir Initial direction wind is coming from in degrees */
409 void SetWindDirDegIC(double dir);
411 /** Sets the initial headwind velocity.
412 @param head Initial headwind speed in knots */
413 void SetHeadWindKtsIC(double head);
415 /** Sets the initial crosswind speed.
416 @param cross Initial crosswind speed, positive from left to right */
417 void SetCrossWindKtsIC(double cross);
419 /** Sets the initial wind downward speed.
420 @param wD Initial downward wind speed in knots*/
421 void SetWindDownKtsIC(double wD);
423 /** Sets the initial climb rate.
424 @param roc Initial Rate of climb in feet/second */
425 void SetClimbRateFpsIC(double roc);
427 /** Gets the initial ground velocity.
428 @return Initial ground velocity in feet/second */
429 inline double GetVgroundFpsIC(void) const { return vg; }
431 /** Gets the initial true velocity.
432 @return Initial true velocity in feet/second */
433 inline double GetVtrueFpsIC(void) const { return vt; }
435 /** Gets the initial body axis X wind velocity.
436 @return Initial body axis X wind velocity in feet/second */
437 inline double GetWindUFpsIC(void) const { return uw; }
439 /** Gets the initial body axis Y wind velocity.
440 @return Initial body axis Y wind velocity in feet/second */
441 inline double GetWindVFpsIC(void) const { return vw; }
443 /** Gets the initial body axis Z wind velocity.
444 @return Initial body axis Z wind velocity in feet/second */
445 inline double GetWindWFpsIC(void) const { return ww; }
447 /** Gets the initial wind velocity in local frame.
448 @return Initial wind velocity toward north in feet/second */
449 inline double GetWindNFpsIC(void) const { return wnorth; }
451 /** Gets the initial wind velocity in local frame.
452 @return Initial wind velocity toward north in feet/second */
453 inline double GetWindEFpsIC(void) const { return weast; }
455 /** Gets the initial wind velocity in local frame.
456 @return Initial wind velocity toward north in feet/second */
457 inline double GetWindDFpsIC(void) const { return wdown; }
459 /** Gets the initial total wind velocity in feet/sec.
460 @return Initial wind velocity in feet/second */
461 inline double GetWindFpsIC(void) const { return sqrt(wnorth*wnorth + weast*weast); }
463 /** Gets the initial wind direction.
464 @return Initial wind direction in feet/second */
465 double GetWindDirDegIC(void) const;
467 /** Gets the initial climb rate.
468 @return Initial rate of climb in feet/second */
469 inline double GetClimbRateFpsIC(void) const { return hdot; }
471 /** Gets the initial body axis X velocity.
472 @return Initial body axis X velocity in feet/second. */
473 double GetUBodyFpsIC(void) const;
475 /** Gets the initial body axis Y velocity.
476 @return Initial body axis Y velocity in feet/second. */
477 double GetVBodyFpsIC(void) const;
479 /** Gets the initial body axis Z velocity.
480 @return Initial body axis Z velocity in feet/second. */
481 double GetWBodyFpsIC(void) const;
483 /** Gets the initial body axis roll rate.
484 @return Initial body axis roll rate in radians/second */
485 double GetPRadpsIC() const { return p; }
487 /** Gets the initial body axis pitch rate.
488 @return Initial body axis pitch rate in radians/second */
489 double GetQRadpsIC() const { return q; }
491 /** Gets the initial body axis yaw rate.
492 @return Initial body axis yaw rate in radians/second */
493 double GetRRadpsIC() const { return r; }
495 /** Sets the initial flight path angle.
496 @param gamma Initial flight path angle in radians */
497 void SetFlightPathAngleRadIC(double gamma);
499 /** Sets the initial angle of attack.
500 @param alpha Initial angle of attack in radians */
501 void SetAlphaRadIC(double alpha);
503 /** Sets the initial pitch angle.
504 @param theta Initial pitch angle in radians */
505 void SetThetaRadIC(double theta);
507 /** Sets the initial sideslip angle.
508 @param beta Initial angle of sideslip in radians. */
509 void SetBetaRadIC(double beta);
511 /** Sets the initial roll angle.
512 @param phi Initial roll angle in radians */
513 void SetPhiRadIC(double phi);
515 /** Sets the initial heading angle.
516 @param psi Initial heading angle in radians */
517 void SetPsiRadIC(double psi);
519 /** Sets the initial latitude.
520 @param lat Initial latitude in radians */
521 inline void SetLatitudeRadIC(double lat) { latitude=lat; }
523 /** Sets the initial longitude.
524 @param lon Initial longitude in radians */
525 inline void SetLongitudeRadIC(double lon) { longitude=lon; }
527 /** Gets the initial flight path angle.
528 @return Initial flight path angle in radians */
529 inline double GetFlightPathAngleRadIC(void) const { return gamma; }
531 /** Gets the initial angle of attack.
532 @return Initial alpha in radians */
533 inline double GetAlphaRadIC(void) const { return alpha; }
535 /** Gets the initial angle of sideslip.
536 @return Initial sideslip angle in radians */
537 inline double GetBetaRadIC(void) const { return beta; }
539 /** Gets the initial roll angle.
540 @return Initial roll angle in radians */
541 inline double GetPhiRadIC(void) const { return phi; }
543 /** Gets the initial latitude.
544 @return Initial latitude in radians */
545 inline double GetLatitudeRadIC(void) const { return latitude; }
547 /** Gets the initial longitude.
548 @return Initial longitude in radians */
549 inline double GetLongitudeRadIC(void) const { return longitude; }
551 /** Gets the initial pitch angle.
552 @return Initial pitch angle in radians */
553 inline double GetThetaRadIC(void) const { return theta; }
555 /** Gets the initial heading angle.
556 @return Initial heading angle in radians */
557 inline double GetPsiRadIC(void) const { return psi; }
559 /** Gets the initial speedset.
560 @return Initial speedset */
561 inline speedset GetSpeedSet(void) { return lastSpeedSet; }
563 /** Gets the initial windset.
564 @return Initial windset */
565 inline windset GetWindSet(void) { return lastWindSet; }
567 /** Loads the initial conditions.
568 @param rstname The name of an initial conditions file
569 @param useStoredPath true if the stored path to the IC file should be used
570 @return true if successful */
571 bool Load(string rstname, bool useStoredPath = true );
576 double altitude,hdot;
577 double latitude,longitude;
581 double vnorth,veast,vdown;
582 double wnorth,weast,wdown;
583 double whead, wcross, wdir, wmag;
584 double sea_level_radius;
585 double terrain_altitude;
586 double radius_to_vehicle;
588 double alpha, beta, theta, phi, psi, gamma;
589 double salpha,sbeta,stheta,sphi,spsi,sgamma;
590 double calpha,cbeta,ctheta,cphi,cpsi,cgamma;
592 double xlo, xhi,xmin,xmax;
594 typedef double (FGInitialCondition::*fp)(double x);
597 speedset lastSpeedSet;
601 FGPropertyManager *PropertyManager;
605 bool getMachFromVcas(double *Mach,double vcas);
607 double GammaEqOfTheta(double Theta);
608 double GammaEqOfAlpha(double Alpha);
609 double calcVcas(double Mach);
610 void calcUVWfromNED(void);
611 void calcWindUVW(void);
613 bool findInterval(double x,double guess);
614 bool solve(double *y, double x);
617 void Debug(int from);