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1 /**************************************************************************
2  * flight.h -- define shared flight model parameters
3  *
4  * Written by Curtis Olson, started May 1997.
5  *
6  * Copyright (C) 1997  Curtis L. Olson  - curt@infoplane.com
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License as
10  * published by the Free Software Foundation; either version 2 of the
11  * License, or (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful, but
14  * WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  * General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21  *
22  * $Id$
23  * (Log is kept at end of this file)
24  **************************************************************************/
25
26
27 #ifndef FLIGHT_H
28 #define FLIGHT_H
29
30
31 #include "Slew/slew.h"
32 #include "LaRCsim/ls_interface.h"
33
34
35 /* Define the various supported flight models (not all implemented) */
36 #define FG_LARCSIM     0
37 #define FG_ACM         1
38 #define FG_HELICOPTER  2
39 #define FG_AUTOGYRO    3
40 #define FG_BALLOON     4
41 #define FG_PARACHUTE   5
42 #define FG_SLEW        6
43 #define FG_EXTERN_GPS  7
44
45
46 /* Define a structure containing the shared flight model parameters */
47 /* struct flight_params {
48     double pos_x, pos_y, pos_z;
49     double vel_x, vel_y, vel_z;
50
51     double Phi;
52     double Theta;
53     double Psi;
54     double vel_Phi;
55     double vel_Theta;
56     double vel_Psi;
57 }; */
58
59
60 typedef double FG_VECTOR_3[3];
61
62 /* This is based heavily on LaRCsim/ls_generic.h */
63 struct flight_params {
64
65 /*================== Mass properties and geometry values ==================*/
66
67     double    mass, i_xx, i_yy, i_zz, i_xz; /* Inertias */
68 #define FG_Mass                    f->mass
69 #define FG_I_xx                    f->i_xx
70 #define FG_I_yy                    f->i_yy
71 #define FG_I_zz                    f->i_zz
72 #define FG_I_xz                    f->i_xz
73
74     FG_VECTOR_3    d_pilot_rp_body_v;      /* Pilot location rel to ref pt */
75 #define FG_D_pilot_rp_body_v       f->d_pilot_rp_body_v
76 #define FG_Dx_pilot                f->d_pilot_rp_body_v[0]
77 #define FG_Dy_pilot                f->d_pilot_rp_body_v[1]
78 #define FG_Dz_pilot                f->d_pilot_rp_body_v[2]
79
80     FG_VECTOR_3    d_cg_rp_body_v; /* CG position w.r.t. ref. point */
81 #define FG_D_cg_rp_body_v          f->d_cg_rp_body_v
82 #define FG_Dx_cg                   f->d_cg_rp_body_v[0]
83 #define FG_Dy_cg                   f->d_cg_rp_body_v[1]
84 #define FG_Dz_cg                   f->d_cg_rp_body_v[2]
85
86 /*================================ Forces =================================*/
87
88     FG_VECTOR_3    f_body_total_v;
89 #define FG_F_body_total_v          f->f_body_total_v
90 #define FG_F_X                     f->f_body_total_v[0]
91 #define FG_F_Y                     f->f_body_total_v[1]
92 #define FG_F_Z                     f->f_body_total_v[2]
93
94     FG_VECTOR_3    f_local_total_v;
95 #define FG_F_local_total_v         f->f_local_total_v
96 #define FG_F_north                 f->f_local_total_v[0]
97 #define FG_F_east                  f->f_local_total_v[1]
98 #define FG_F_down                  f->f_local_total_v[2]
99
100     FG_VECTOR_3    f_aero_v;
101 #define FG_F_aero_v                f->f_aero_v
102 #define FG_F_X_aero                f->f_aero_v[0]
103 #define FG_F_Y_aero                f->f_aero_v[1]
104 #define FG_F_Z_aero                f->f_aero_v[2]
105
106     FG_VECTOR_3    f_engine_v;
107 #define FG_F_engine_v              f->f_engine_v
108 #define FG_F_X_engine              f->f_engine_v[0]
109 #define FG_F_Y_engine              f->f_engine_v[1]
110 #define FG_F_Z_engine              f->f_engine_v[2]
111
112     FG_VECTOR_3    f_gear_v;
113 #define FG_F_gear_v                f->f_gear_v
114 #define FG_F_X_gear                f->f_gear_v[0]
115 #define FG_F_Y_gear                f->f_gear_v[1]
116 #define FG_F_Z_gear                f->f_gear_v[2]
117
118 /*================================ Moments ================================*/
119
120     FG_VECTOR_3    m_total_rp_v;
121 #define FG_M_total_rp_v            f->m_total_rp_v
122 #define FG_M_l_rp                  f->m_total_rp_v[0]
123 #define FG_M_m_rp                  f->m_total_rp_v[1]
124 #define FG_M_n_rp                  f->m_total_rp_v[2]
125
126     FG_VECTOR_3    m_total_cg_v;
127 #define FG_M_total_cg_v            f->m_total_cg_v
128 #define FG_M_l_cg                  f->m_total_cg_v[0]
129 #define FG_M_m_cg                  f->m_total_cg_v[1]
130 #define FG_M_n_cg                  f->m_total_cg_v[2]
131
132     FG_VECTOR_3    m_aero_v;
133 #define FG_M_aero_v                f->m_aero_v
134 #define FG_M_l_aero                f->m_aero_v[0]
135 #define FG_M_m_aero                f->m_aero_v[1]
136 #define FG_M_n_aero                f->m_aero_v[2]
137
138     FG_VECTOR_3    m_engine_v;
139 #define FG_M_engine_v              f->m_engine_v
140 #define FG_M_l_engine              f->m_engine_v[0]
141 #define FG_M_m_engine              f->m_engine_v[1]
142 #define FG_M_n_engine              f->m_engine_v[2]
143
144     FG_VECTOR_3    m_gear_v;
145 #define FG_M_gear_v                f->m_gear_v
146 #define FG_M_l_gear                f->m_gear_v[0]
147 #define FG_M_m_gear                f->m_gear_v[1]
148 #define FG_M_n_gear                f->m_gear_v[2]
149
150 /*============================== Accelerations ============================*/
151
152     FG_VECTOR_3    v_dot_local_v;
153 #define FG_V_dot_local_v           f->v_dot_local_v
154 #define FG_V_dot_north             f->v_dot_local_v[0]
155 #define FG_V_dot_east              f->v_dot_local_v[1]
156 #define FG_V_dot_down              f->v_dot_local_v[2]
157
158     FG_VECTOR_3    v_dot_body_v;
159 #define FG_V_dot_body_v            f->v_dot_body_v
160 #define FG_U_dot_body              f->v_dot_body_v[0]
161 #define FG_V_dot_body              f->v_dot_body_v[1]
162 #define FG_W_dot_body              f->v_dot_body_v[2]
163
164     FG_VECTOR_3    a_cg_body_v;
165 #define FG_A_cg_body_v             f->a_cg_body_v
166 #define FG_A_X_cg                  f->a_cg_body_v[0]
167 #define FG_A_Y_cg                  f->a_cg_body_v[1]
168 #define FG_A_Z_cg                  f->a_cg_body_v[2]
169
170     FG_VECTOR_3    a_pilot_body_v;
171 #define FG_A_pilot_body_v          f->a_pilot_body_v
172 #define FG_A_X_pilot               f->a_pilot_body_v[0]
173 #define FG_A_Y_pilot               f->a_pilot_body_v[1]
174 #define FG_A_Z_pilot               f->a_pilot_body_v[2]
175
176     FG_VECTOR_3    n_cg_body_v;
177 #define FG_N_cg_body_v             f->n_cg_body_v
178 #define FG_N_X_cg                  f->n_cg_body_v[0]
179 #define FG_N_Y_cg                  f->n_cg_body_v[1]
180 #define FG_N_Z_cg                  f->n_cg_body_v[2]
181
182     FG_VECTOR_3    n_pilot_body_v;
183 #define FG_N_pilot_body_v          f->n_pilot_body_v
184 #define FG_N_X_pilot               f->n_pilot_body_v[0]
185 #define FG_N_Y_pilot               f->n_pilot_body_v[1]
186 #define FG_N_Z_pilot               f->n_pilot_body_v[2]
187
188     FG_VECTOR_3    omega_dot_body_v;
189 #define FG_Omega_dot_body_v        f->omega_dot_body_v
190 #define FG_P_dot_body              f->omega_dot_body_v[0]
191 #define FG_Q_dot_body              f->omega_dot_body_v[1]
192 #define FG_R_dot_body              f->omega_dot_body_v[2]
193
194
195 /*============================== Velocities ===============================*/
196
197     FG_VECTOR_3    v_local_v;
198 #define FG_V_local_v               f->v_local_v
199 #define FG_V_north                 f->v_local_v[0]
200 #define FG_V_east                  f->v_local_v[1]
201 #define FG_V_down                  f->v_local_v[2]
202
203     FG_VECTOR_3    v_local_rel_ground_v; /* V rel w.r.t. earth surface   */
204 #define FG_V_local_rel_ground_v    f->v_local_rel_ground_v
205 #define FG_V_north_rel_ground      f->v_local_rel_ground_v[0]
206 #define FG_V_east_rel_ground       f->v_local_rel_ground_v[1]
207 #define FG_V_down_rel_ground       f->v_local_rel_ground_v[2]
208
209     FG_VECTOR_3    v_local_airmass_v;   /* velocity of airmass (steady winds) */
210 #define FG_V_local_airmass_v       f->v_local_airmass_v
211 #define FG_V_north_airmass         f->v_local_airmass_v[0]
212 #define FG_V_east_airmass          f->v_local_airmass_v[1]
213 #define FG_V_down_airmass          f->v_local_airmass_v[2]
214
215     FG_VECTOR_3    v_local_rel_airmass_v;  /* velocity of veh. relative to */
216                                            /* airmass */
217 #define FG_V_local_rel_airmass_v   f->v_local_rel_airmass_v
218 #define FG_V_north_rel_airmass     f->v_local_rel_airmass_v[0]
219 #define FG_V_east_rel_airmass      f->v_local_rel_airmass_v[1]
220 #define FG_V_down_rel_airmass      f->v_local_rel_airmass_v[2]
221
222     FG_VECTOR_3    v_local_gust_v; /* linear turbulence components, L frame */
223 #define FG_V_local_gust_v          f->v_local_gust_v
224 #define FG_U_gust                  f->v_local_gust_v[0]
225 #define FG_V_gust                  f->v_local_gust_v[1]
226 #define FG_W_gust                  f->v_local_gust_v[2]
227
228     FG_VECTOR_3    v_wind_body_v;  /* Wind-relative velocities in body axis */
229 #define FG_V_wind_body_v           f->v_wind_body_v
230 #define FG_U_body                  f->v_wind_body_v[0]
231 #define FG_V_body                  f->v_wind_body_v[1]
232 #define FG_W_body                  f->v_wind_body_v[2]
233
234     double    v_rel_wind, v_true_kts, v_rel_ground, v_inertial;
235     double    v_ground_speed, v_equiv, v_equiv_kts;
236     double    v_calibrated, v_calibrated_kts;
237 #define FG_V_rel_wind              f->v_rel_wind
238 #define FG_V_true_kts              f->v_true_kts
239 #define FG_V_rel_ground            f->v_rel_ground
240 #define FG_V_inertial              f->v_inertial
241 #define FG_V_ground_speed          f->v_ground_speed
242 #define FG_V_equiv                 f->v_equiv
243 #define FG_V_equiv_kts             f->v_equiv_kts
244 #define FG_V_calibrated            f->v_calibrated
245 #define FG_V_calibrated_kts        f->v_calibrated_kts
246
247     FG_VECTOR_3    omega_body_v;   /* Angular B rates      */
248 #define FG_Omega_body_v            f->omega_body_v
249 #define FG_P_body                  f->omega_body_v[0]
250 #define FG_Q_body                  f->omega_body_v[1]
251 #define FG_R_body                  f->omega_body_v[2]
252
253     FG_VECTOR_3    omega_local_v;  /* Angular L rates      */
254 #define FG_Omega_local_v           f->omega_local_v
255 #define FG_P_local                 f->omega_local_v[0]
256 #define FG_Q_local                 f->omega_local_v[1]
257 #define FG_R_local                 f->omega_local_v[2]
258
259     FG_VECTOR_3    omega_total_v;  /* Diff btw B & L       */
260 #define FG_Omega_total_v           f->omega_total_v
261 #define FG_P_total                 f->omega_total_v[0]
262 #define FG_Q_total                 f->omega_total_v[1]
263 #define FG_R_total                 f->omega_total_v[2]
264
265     FG_VECTOR_3    euler_rates_v;
266 #define FG_Euler_rates_v           f->euler_rates_v
267 #define FG_Phi_dot                 f->euler_rates_v[0]
268 #define FG_Theta_dot               f->euler_rates_v[1]
269 #define FG_Psi_dot                 f->euler_rates_v[2]
270
271     FG_VECTOR_3    geocentric_rates_v;     /* Geocentric linear velocities */
272 #define FG_Geocentric_rates_v      f->geocentric_rates_v
273 #define FG_Latitude_dot            f->geocentric_rates_v[0]
274 #define FG_Longitude_dot           f->geocentric_rates_v[1]
275 #define FG_Radius_dot              f->geocentric_rates_v[2]
276
277 /*=============================== Positions ===============================*/
278
279     FG_VECTOR_3    geocentric_position_v;
280 #define FG_Geocentric_position_v   f->geocentric_position_v
281 #define FG_Lat_geocentric          f->geocentric_position_v[0]
282 #define FG_Lon_geocentric          f->geocentric_position_v[1]
283 #define FG_Radius_to_vehicle       f->geocentric_position_v[2]
284
285     FG_VECTOR_3    geodetic_position_v;
286 #define FG_Geodetic_position_v     f->geodetic_position_v
287 #define FG_Latitude                f->geodetic_position_v[0]
288 #define FG_Longitude               f->geodetic_position_v[1]
289 #define FG_Altitude                f->geodetic_position_v[2]
290
291     FG_VECTOR_3    euler_angles_v;
292 #define FG_Euler_angles_v          f->euler_angles_v
293 #define FG_Phi                     f->euler_angles_v[0]
294 #define FG_Theta                   f->euler_angles_v[1]
295 #define FG_Psi                     f->euler_angles_v[2]
296
297 /*======================= Miscellaneous quantities ========================*/
298
299     double    t_local_to_body_m[3][3];    /* Transformation matrix L to B */
300 #define FG_T_local_to_body_m       f->t_local_to_body_m
301 #define FG_T_local_to_body_11      f->t_local_to_body_m[0][0]
302 #define FG_T_local_to_body_12      f->t_local_to_body_m[0][1]
303 #define FG_T_local_to_body_13      f->t_local_to_body_m[0][2]
304 #define FG_T_local_to_body_21      f->t_local_to_body_m[1][0]
305 #define FG_T_local_to_body_22      f->t_local_to_body_m[1][1]
306 #define FG_T_local_to_body_23      f->t_local_to_body_m[1][2]
307 #define FG_T_local_to_body_31      f->t_local_to_body_m[2][0]
308 #define FG_T_local_to_body_32      f->t_local_to_body_m[2][1]
309 #define FG_T_local_to_body_33      f->t_local_to_body_m[2][2]
310
311     double    gravity;            /* Local acceleration due to G  */
312 #define FG_Gravity                 f->gravity
313
314     double    centrifugal_relief; /* load factor reduction due to speed */
315 #define FG_Centrifugal_relief      f->centrifugal_relief
316
317     double    alpha, beta, alpha_dot, beta_dot;   /* in radians   */
318 #define FG_Alpha                   f->alpha
319 #define FG_Beta                    f->beta
320 #define FG_Alpha_dot               f->alpha_dot
321 #define FG_Beta_dot                f->beta_dot
322
323     double    cos_alpha, sin_alpha, cos_beta, sin_beta;
324 #define FG_Cos_alpha               f->cos_alpha
325 #define FG_Sin_alpha               f->sin_alpha
326 #define FG_Cos_beta                f->cos_beta
327 #define FG_Sin_beta                f->sin_beta
328
329     double    cos_phi, sin_phi, cos_theta, sin_theta, cos_psi, sin_psi;
330 #define FG_Cos_phi                 f->cos_phi
331 #define FG_Sin_phi                 f->sin_phi
332 #define FG_Cos_theta               f->cos_theta
333 #define FG_Sin_theta               f->sin_theta
334 #define FG_Cos_psi                 f->cos_psi
335 #define FG_Sin_psi                 f->sin_psi
336
337     double    gamma_vert_rad, gamma_horiz_rad;    /* Flight path angles   */
338 #define FG_Gamma_vert_rad          f->gamma_vert_rad
339 #define FG_Gamma_horiz_rad         f->gamma_horiz_rad
340
341     double    sigma, density, v_sound, mach_number;
342 #define FG_Sigma                   f->sigma
343 #define FG_Density                 f->density
344 #define FG_V_sound                 f->v_sound
345 #define FG_Mach_number             f->mach_number
346
347     double    static_pressure, total_pressure, impact_pressure;
348     double    dynamic_pressure;
349 #define FG_Static_pressure         f->static_pressure
350 #define FG_Total_pressure          f->total_pressure
351 #define FG_Impact_pressure         f->impact_pressure
352 #define FG_Dynamic_pressure        f->dynamic_pressure
353
354     double    static_temperature, total_temperature;
355 #define FG_Static_temperature      f->static_temperature
356 #define FG_Total_temperature       f->total_temperature
357
358     double    sea_level_radius, earth_position_angle;
359 #define FG_Sea_level_radius        f->sea_level_radius
360 #define FG_Earth_position_angle    f->earth_position_angle
361
362     double    runway_altitude, runway_latitude, runway_longitude;
363     double    runway_heading;
364 #define FG_Runway_altitude         f->runway_altitude
365 #define FG_Runway_latitude         f->runway_latitude
366 #define FG_Runway_longitude        f->runway_longitude
367 #define FG_Runway_heading          f->runway_heading
368
369     double    radius_to_rwy;
370 #define FG_Radius_to_rwy           f->radius_to_rwy
371
372     FG_VECTOR_3    d_cg_rwy_local_v;       /* CG rel. to rwy in local coords */
373 #define FG_D_cg_rwy_local_v        f->d_cg_rwy_local_v
374 #define FG_D_cg_north_of_rwy       f->d_cg_rwy_local_v[0]
375 #define FG_D_cg_east_of_rwy        f->d_cg_rwy_local_v[1]
376 #define FG_D_cg_above_rwy          f->d_cg_rwy_local_v[2]
377
378     FG_VECTOR_3    d_cg_rwy_rwy_v; /* CG relative to rwy, in rwy coordinates */
379 #define FG_D_cg_rwy_rwy_v          f->d_cg_rwy_rwy_v
380 #define FG_X_cg_rwy                f->d_cg_rwy_rwy_v[0]
381 #define FG_Y_cg_rwy                f->d_cg_rwy_rwy_v[1]
382 #define FG_H_cg_rwy                f->d_cg_rwy_rwy_v[2]
383
384     FG_VECTOR_3    d_pilot_rwy_local_v;  /* pilot rel. to rwy in local coords */
385 #define FG_D_pilot_rwy_local_v     f->d_pilot_rwy_local_v
386 #define FG_D_pilot_north_of_rwy    f->d_pilot_rwy_local_v[0]
387 #define FG_D_pilot_east_of_rwy     f->d_pilot_rwy_local_v[1]
388 #define FG_D_pilot_above_rwy       f->d_pilot_rwy_local_v[2]
389
390     FG_VECTOR_3   d_pilot_rwy_rwy_v;   /* pilot rel. to rwy, in rwy coords. */
391 #define FG_D_pilot_rwy_rwy_v       f->d_pilot_rwy_rwy_v
392 #define FG_X_pilot_rwy             f->d_pilot_rwy_rwy_v[0]
393 #define FG_Y_pilot_rwy             f->d_pilot_rwy_rwy_v[1]
394 #define FG_H_pilot_rwy             f->d_pilot_rwy_rwy_v[2]
395
396 };
397
398
399 /* General interface to the flight model routines */
400
401 /* Initialize the flight model parameters */
402 int fgFlightModelInit(int model, struct flight_params *f, double dt);
403
404 /* Run multiloop iterations of the flight model */
405 int fgFlightModelUpdate(int model, struct flight_params *f, int multiloop);
406
407
408 #endif FLIGHT_H
409
410
411 /* $Log$
412 /* Revision 1.6  1997/06/21 17:52:22  curt
413 /* Continue directory shuffling ... everything should be compilable/runnable
414 /* again.
415 /*
416  * Revision 1.5  1997/06/21 17:12:49  curt
417  * Capitalized subdirectory names.
418  *
419  * Revision 1.4  1997/05/29 22:39:57  curt
420  * Working on incorporating the LaRCsim flight model.
421  *
422  * Revision 1.3  1997/05/29 02:32:25  curt
423  * Starting to build generic flight model interface.
424  *
425  * Revision 1.2  1997/05/23 15:40:37  curt
426  * Added GNU copyright headers.
427  *
428  * Revision 1.1  1997/05/16 16:04:45  curt
429  * Initial revision.
430  *
431  */