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