1 ************************************************
3 * FGFS Reconfigurable Aircraft Flight Model *
4 * Input File Documentation *
5 * Version 0.63, March 17, 2000 *
8 * Jeff Scott (jscott@uiuc.edu) *
9 * Bipin Sehgal (bsehgal@uiuc.edu) *
10 * Michael Selig (m-selig@uiuc.edu) *
11 * Dept of Aero and Astro Engineering *
12 * University of Illinois at Urbana-Champaign *
14 * http://amber.aae.uiuc.edu/~m-selig *
16 ************************************************
19 **********************************************************************
20 This documentation includes:
21 - Required and optional input lines.
22 - Input line formats and conventions.
24 Viewing this file in emacs makefile-mode with color makes this file
26 **********************************************************************
28 **********************************************************************
29 I. Conventions and Notations and Reading this Document:
32 | Input line not yet implemented
34 | Sometimes indicates a feature not yet used,
35 but proposed convention is indicated nevertheless.
36 || Input line disabled
38 ... Repeat similar data
39 -> Continue onto next line
40 **********************************************************************
42 **********************************************************************
43 II. General Input Line Format:
45 Examples input lines include
47 Cm Cmo 0.194 # [] Bray pg 33
48 Cm Cm_a -2.12 # [/rad] Bray pg 33
49 CL CLfa CLfa.dat # [] Bray pg 50, Table 4.7
51 These follow the more general input line form
53 keyword variableName <value -or- file> | ->
54 <value -or- file> # [units] <data source>
56 Each term of the input line will be discussed in turn.
61 There currently exist 15 types of variable keywords:
63 init Initial values for equation of motion
64 geometry Aircraft-specific geometric quantities
65 controlSurface Control surface deflections and properties
66 |controlsMixer Control surface mixer options
67 mass Aircraft-specific mass properties
68 engine Propulsion data
69 CD Aerodynamic x-force quantities (longitudinal)
70 CL Aerodynamic z-force quantities (longitudinal)
71 Cm Aerodynamic m-moment quantities (longitudinal)
72 CY Aerodynamic y-force quantities (lateral)
73 Cl Aerodynamic l-moment quantities (lateral)
74 Cn Aerodynamic n-moment quantities (lateral)
75 |gear Landing gear model quantities
76 ice Aircraft icing model parameters
77 record Record desired quantities to the file: uiuc_record.dat
79 As each line of the input file is read, the code recognizes the
80 keyword, enters the appropriate switch statement in the code, and
81 proceeds to read the next term in the input line.
86 The variable name indicates the form of the variable itself. This
87 form may be a constant, a stability derivative (a specific form of a
88 constant), or a variable-dimensional lookup table. More variable
89 types can be easily prescribed by defining a new convention. The
90 variable name may also indicate that the quantity is to be calculated
91 from a hard-coded equation or set of equations provided at an
92 appropriate location within the code.
94 If the parameter name denotes a constant, a numerical value will
95 follow the variable name. If a lookup table, the name of the table
96 containing the data will follow.
98 More than one value or file name can be specified if the code is
99 intended to read in multiple pieces of data when implementing the
100 particular switch in question (see also OPTIONAL data, section (3)).
102 The conventions used for naming the variables are provided below.
103 Several of these variable names are not currently used.
106 _ denotes stability derivative to be multiple by something
107 f "function of" (indicates an m*n matrix data table is given)
109 2) timing data (global simulator variables)
110 Simtime current simulator time [s]
111 dt current simulator time step [s]
113 3) aircraft state variables
114 Dx_pilot x-location [ft]
115 Dy_pilot y-location [ft]
116 Dz_pilot z-location [ft]
117 Dx_cg center of gravity x-location [ft]
118 Dy_cg center of gravity y-location [ft]
119 Dz_cg center of gravity z-location [ft]
120 V_north x-velocity [ft/s]
121 V_east y-velocity [ft/s]
122 V_down z-velocity [ft/s]
123 V_rel_wind total velocity [ft/s]
124 Dynamic_pressure dynamic pressure [lb/ft^2]
125 Alpha angle of attack [rad]
126 Alpha_dot rate of change of alpha [rad/s]
127 Beta sideslip angle [rad]
128 Beta_dot rate of change of beta [rad]
129 Gamma flight path angle [rad]
130 P_body roll rate [rad/s]
131 Q_body pitch rate [rad/s]
132 R_body yaw rate [rad/s]
134 Theta pitch attitude angle [rad]
135 Theta_dot rate change of theta [rad/s]
136 Psi heading angle [rad]
140 Re Reynolds number []
142 4) atmosphere properties
143 Density air density [slug/ft^3]
145 5) geometric variables
147 cbar mean aerodynamic chord [ft]
148 Sw wing planform area [ft^2]
149 iw wing incidence angle [deg]
151 cc canard (mean) chord [ft]
152 Sc canard area [ft^2]
153 ic canard incidence angle [deg]
154 bh horizontal tail span [ft]
155 ch horizontal tail (mean) chord [ft]
156 Sh horizontal tail area [ft^2]
157 ih horizontal tail incidence angle [deg]
158 bv vertical tail span (height) [ft]
159 cv vertical tail (mean) chord [ft]
160 iv vertical tail incidence angle [deg]
161 Sv vertical tail area [ft^2]
163 6) control surface properties
164 Sa aileron area [ft^2]
165 Se elevator area [ft^2]
167 Sr rudder area [ft^2]
168 Lat_control roll control input [?]
169 Long_control pitch control input [?]
170 Rudder_pedal yaw control input [?]
171 aileron aileron deflection [rad]
172 elevator elevator deflection [rad]
173 rudder rudder deflection [rad]
174 |flap flap deflection [rad]
177 |Weight gross takeoff weight [lb]
178 Mass aircraft mass (used by LaRC) [slug]
179 I_xx roll inertia [slug-ft^2]
180 I_yy pitch inertia [slug-ft^2]
181 I_zz yaw inertia [slug-ft^2]
182 I_xz lateral cross inertia [slug-ft^2]
184 8) engine/propulsion variables
186 simpleSingle simple single engine max thrust [lb]
187 |Throttle_pct throttle input [] # ie, this is the stick
188 |Throttle[3] throttle deflection [%] # this is what gets used to determine thrust
190 9) force/moment coefficients
191 CD coefficient of drag []
192 CY coefficient of side-force []
193 CL coefficient of lift []
194 Cl coefficient of roll moment []
195 Cm coefficient of pitching moment []
196 Cn coefficient of yaw moment []
197 |CT coefficient of thrust []
199 10) total forces/moments
200 F_X_wind aerodynamic x-force in wind-axes [lb]
201 F_Y_wind aerodynamic y-force in wind-axes [lb]
202 F_Z_wind aerodynamic z-force in wind-axes [lb]
203 F_X_aero aerodynamic x-force in body-axes [lb]
204 F_Y_aero aerodynamic y-force in body-axes [lb]
205 F_Z_aero aerodynamic z-force in body-axes [lb]
206 F_X_engine propulsion x-force in body axes [lb]
207 F_Y_engine propulsion y-force in body axes [lb]
208 F_Z_engine propulsion z-force in body axes [lb]
209 F_X_gear gear x-force in body axes [lb]
210 F_Y_gear gear y-force in body axes [lb]
211 F_Z_gear gear z-force in body axes [lb]
212 F_X total x-force [lb]
213 F_Y total y-force [lb]
214 F_Z total z-force [lb]
215 M_l_aero aero roll-moment in body-axes [ft-lb]
216 M_m_aero aero pitch-moment in body-axes [ft-lb]
217 M_n_aero aero yaw-moment in body-axes [ft-lb]
218 M_l_engine prop roll-moment in body axes [ft-lb]
219 M_m_engine prop pitch-moment in body axes [ft-lb]
220 M_n_engine prop yaw-moment in body axes [ft-lb]
221 M_l_gear gear roll-moment in body axes [ft-lb]
222 M_m_gear gear pitch-moment in body axes [ft-lb]
223 M_n_gear gear yaw-moment in body axes [ft-lb]
224 M_l_rp total roll-moment [ft-lb]
225 M_m_rp total pitch-moment [ft-lb]
226 M_n_rp total yaw-moment [ft-lb]
228 11) landing gear properties
229 |cgear gear damping constant [?]
230 |kgear gear spring constant [?]
231 |muGear gear rolling friction coef [?]
232 |strutLength gear strut length [ft]
234 12) icing model paramters
235 iceTime time when icing begins [s]
236 transientTime time period over which eta increases to final [s]
237 eta_final icing severity factor at end of transient time [-]
238 kCA icing constants for associated aero coef. [-] (see IV)
241 o value for all angles = 0 (alfa, beta, etc)
243 adot rate change in angle alpha
245 |betadot rate change in beta
249 |pdot rate change in p
250 |qdot rate change in q
251 |rdot rate change in r
252 |udot rate change in x-velocity
253 da aileron deflection
254 de elevator deflection
257 |df2 flap deflection for second set
258 |df3 flap deflection for third set
262 (3) | (OPTIONAL DATA)
263 =====================
265 An input line may also be used to provide optional data that
266 will be used if provided but is not necessary for the code to
267 operate. As with the variable data described in section (2), multiple
268 values or data files may be provided if the code is written to use
274 Appended comments should be provided with each input line to indicate
275 units on the variable in question and to indicate the source the data
277 **********************************************************************
279 **********************************************************************
280 III. Sample Input Lines:
285 geometry bw <value> # geometric parameter, wingspan
286 Cm Cm_a <value> # stability derivative, d(Cm)/d(alpha)
287 controlSurface de <value> <value> # max and min elevator deflections
292 CD CDfCL <file.dat> # CD(CL), drag polar data file
293 Cm Cmfade <file.dat> # Cm(alpha,delta_e), moment data file
298 CD CDfCL # CD(CL), drag calculated in code based on CL
300 **********************************************************************
302 **********************************************************************
303 IV. Definitions of Input Lines Currently Available:
305 Of all the possible permutation of variable names described above in
306 section II, only some are currently implemented in the code. These
307 are described below. Comments, denoted by '#,' are used to define the
308 lines and to indicate examples of the data if additional clarity is
309 needed for unique situations. Again, those lines beginning with '|'
310 are not currently implemented in the code, but indicate planned
311 conventions in later versions.
313 # Key Variable Data Units Description Where Defined
314 #------------------------------------------------------------------------------------
316 init Dx_pilot <Dx_pilot> # [ft] initial x-position ls_generic.h
317 init Dy_pilot <Dy_pilot> # [ft] initial y-position ls_generic.h
318 init Dz_pilot <Dz_pilot> # [ft] initial z-position ls_generic.h
319 init Dx_cg <Dx_cg> # [ft] initial cg x_location ls_generic.h
320 init Dy_cg <Dy_cg> # [ft] initial cg y_location ls_generic.h
321 init Dz_cg <Dz_cg> # [ft] initial cg z_location ls_generic.h
322 |init V_north <V_north> # [ft/s] initial x-velocity ls_generic.h
323 |init V_east <V_east> # [ft/s] initial y-velocity ls_generic.h
324 |init V_down <V_down> # [ft/s] initial z-velocity ls_generic.h
325 init P_body <P_body> # [rad/s] initial roll rate ls_generic.h
326 init Q_body <Q_body> # [rad/s] initial pitch rate ls_generic.h
327 init R_body <R_body> # [rad/s] initial yaw rate ls_generic.h
328 init Phi <Phi> # [rad] initial bank angle ls_generic.h
329 init Theta <Theta> # [rad] initial pitch attitude angle ls_generic.h
330 init Psi <Psi> # [rad] initial heading angle ls_generic.h
332 geometry bw <bw> # [ft] wingspan uiuc_aircraft.h
333 geometry cbar <cbar> # [ft] wing mean aero chord uiuc_aircraft.h
334 geometry Sw <Sw> # [ft^2] wing reference area uiuc_aircraft.h
335 |geometry iw <iw> # [deg] wing incidence angle uiuc_aircraft.h
336 |geometry bc <bc> # [ft] canard span uiuc_aircraft.h
337 |geometry cc <cc> # [ft] canard chord uiuc_aircraft.h
338 |geometry Sc <Sc> # [sq-ft] canard area uiuc_aircraft.h
339 |geometry ic <ic> # [deg] canard incidence angle uiuc_aircraft.h
340 |geometry bh <bh> # [ft] horizontal tail span uiuc_aircraft.h
341 |geometry ch <ch> # [ft] horizontal tail chord uiuc_aircraft.h
342 |geometry Sh <Sh> # [sq-ft] horizontal tail area uiuc_aircraft.h
343 |geometry ih <ih> # [deg] horiz tail incidence angle uiuc_aircraft.h
344 |geometry bv <bv> # [ft] vertical tail span uiuc_aircraft.h
345 |geometry cv <cv> # [ft] vertical tail chord uiuc_aircraft.h
346 |geometry Sv <Sv> # [sq-ft] vertical tail area uiuc_aircraft.h
347 |geometry iv <iv> # [deg] vert tail incidence angle uiuc_aircraft.h
349 |controlSurface Se <Se> # [ft^2] elevator area uiuc_aircraft.h
350 |controlSurface Sa <Sa> # [ft^2] aileron area uiuc_aircraft.h
351 |controlSurface Sr <Sr> # [ft^2] rudder area uiuc_aircraft.h
352 |controlSurface Sf <Sf> # [ft^2] flap area uiuc_aircraft.h
353 controlSurface de <demax> <demin> # [deg] max/min elev deflections uiuc_aircraft.h
354 controlSurface da <damax> <damin> # [deg] max/min ail deflections uiuc_aircraft.h
355 controlSurface dr <drmax> <drmin> # [deg] max/min rud deflections uiuc_aircraft.h
356 |controlSurface df <dfmax> <dfmin> # [deg] max/min flap deflections uiuc_aircraft.h
357 # Note: Currently demin is not used in the code, and the max/min is +-demax.
360 |controlsMixer nomix <?> # [] no controls mixing uiuc_aircraft.h
362 |mass Weight <Weight> # [lb] gross takeoff weight (not used)
363 mass Mass <Mass> # [slug] gross takeoff mass ls_generic.h
364 mass I_xx <I_xx> # [slug-ft^2] roll inertia ls_generic.h
365 mass I_yy <I_yy> # [slug-ft^2] pitch inertia ls_generic.h
366 mass I_zz <I_zz> # [slug-ft^2] yaw inertia ls_generic.h
367 mass I_xz <I_xz> # [slug-ft^2] lateral cross inertia ls_generic.h
369 |engine thrust <thrustMax> <thrustMin> # [lb] max/min engine thrust uiuc_aircraft.h
370 engine simpleSingle <sSMaxThrust> # [lb] simple single engine uiuc_aircraft.h
371 engine c172 # use Cessna 172 engine model of Tony Peden
373 CL CLo <CLo> # [] lift coef for all angles = 0 uiuc_aircraft.h
374 CL CL_a <CL_a> # [/rad] lift curve slope, d(CL)/d(alpha) uiuc_aircraft.h
375 CL CL_adot <CL_adot> # [/rad] d(CL)/d(alpha)/da(time) uiuc_aircraft.h
376 CL CL_q <CL_q> # [/rad] d(CL)/delta(q) uiuc_aircraft.h
377 CL CL_de <CL_de> # [/rad] d(CL)/d(de) uiuc_aircraft.h
379 # CL(alpha), conversion for CL, for alpha [] uiuc_aircraft.h
380 CL CLfa <CLfa.dat> <conversion1> <conversion2>
382 # CL(alpha,delta_e), conversion for CL, for alpha, for delta_e [] uiuc_aircraft.h
383 CL CLfade <CLfade.dat> <conversion1> <conversion2> <conversion3>
385 |CL CLfCT <CLfCT.dat> # CL(thrust coef) uiuc_aircraft.h
386 |CL CLfRe # CL(Reynolds #), equation uiuc_aircraft.h
387 |CL CL_afaM <CL_afaM.dat> # CL_alpha(alpha,Mach #) uiuc_aircraft.h
388 # there are examples that might later be included in the code
390 # note that CD terms must come after CL for induced drag to be computed
391 CD CDo <CDo> # [] drag coef for all angles = 0 uiuc_aircraft.h
392 CD CDK <CDK> # [] constant, as in CD=CDo+K*CL^2 uiuc_aircraft.h
393 CD CD_a <CD_a> # [/rad] d(CD)/d(alpha) uiuc_aircraft.h
394 CD CD_de <CD_de> # [/rad] d(CD)/d(delta_e) uiuc_aircraft.h
396 # CD(alpha), conversion for CD, for alpha [] uiuc_aircraft.h
397 CD CDfa <CDfa.dat> <conversion1> <conversion2>
399 # CD(alpha,delta_e), conversion for CD, for alpha, for delta_e [] uiuc_aircraft.h
400 CD CDfade <CDfade.dat> <conversion1> <conversion2> <conversion3>
403 Cm Cmo <Cmo> # [] pitch mom coef for all angles=0 uiuc_aircraft.h
404 Cm Cm_a <Cm_a> # [/rad] d(Cm)/d(alpha) uiuc_aircraft.h
405 Cm Cm_adot <Cm_adot> # [/rad] d(Cm)/d(alpha)/d(time) uiuc_aircraft.h
406 Cm Cm_q <Cm_q> # [/rad] d(Cm)/d(q) uiuc_aircraft.h
407 Cm Cm_de <Cm_de> # [/rad] d(Cm)/d(de) uiuc_aircraft.h
408 |Cm Cmfa <Cmfa.dat> # [] Cm(alpha) uiuc_aircraft.h
409 Cm Cmfade <Cmfade.dat> # [] Cm(alpha,delta_e) uiuc_aircraft.h
410 # Cm(alpha,delta_e), conversion for Cm, for alpha, for delta_e [] uiuc_aircraft.h
411 Cm Cmfade <Cmfade.dat> <conversion1> <conversion2> <conversion3>
413 CY CYo <CYo> # [] side-force coef for all angles=0 uiuc_aircraft.h
414 CY CY_beta <CY_beta> # [/rad] d(CY)/d(beta) uiuc_aircraft.h
415 CY CY_p <CY_p> # [/rad] d(CY)/d(p) uiuc_aircraft.h
416 CY CY_r <CY_r> # [/rad] d(CY)/d(r) uiuc_aircraft.h
417 CY CY_da <CY_da> # [/rad] d(CY)/d(delta_a) uiuc_aircraft.h
418 CY CY_dr <CY_dr> # [/rad] d(CY)/d(delta_r) uiuc_aircraft.h
420 # CY(alpha,delta_a), conversion for CY, for alpha, for delta_a [] uiuc_aircraft.h
421 CY CYfada <CYfada.dat> <conversion1> <conversion2> <conversion3>
423 # CY(beta,delta_r), conversion for CY, for beta, for delta_r [] uiuc_aircraft.h
424 CY CYfbetadr <CYfbetadr.dat> <conversion1> <conversion2> <conversion3>
427 Cl Clo <Clo> # [] roll mom coef for all angles=0 uiuc_aircraft.h
428 Cl Cl_beta <Cl_beta> # [/rad] d(Cl)/d(beta) uiuc_aircraft.h
429 Cl Cl_betafCL # [/rad] Cl_beta(CL) equation uiuc_aircraft.h
430 Cl Cl_p <Cl_p> # [/rad] d(Cl)/d(p) uiuc_aircraft.h
431 Cl Cl_r <Cl_r> # [/rad] d(Cl)/d(r) uiuc_aircraft.h
432 Cl Cl_rfCL # [/rad] Cl_r(CL) equation uiuc_aircraft.h
433 Cl Cl_da <Cl_da> # [/rad] d(Cl)/d(delta_a) uiuc_aircraft.h
434 Cl Cl_dr <Cl_dr> # [/rad] d(Cl)/d(delta_r) uiuc_aircraft.h
435 Cl Clfada # [] Cl(alpha,delta_a), equation uiuc_aircraft.h
437 # Cl(alpha,delta_a), conversion for Cl, for alpha, for delta_a [] uiuc_aircraft.h
438 Cl Clfada <CYfada.dat> <conversion1> <conversion2> <conversion3>
440 # Cl(beta,delta_r), conversion for Cl, for beta, for delta_r [] uiuc_aircraft.h
441 Cl Clfbetadr <CYfbetadr.dat> <conversion1> <conversion2> <conversion3>
444 Cn Cno <Cno> # [] yaw mom coef for all angles=0 uiuc_aircraft.h
445 Cn Cn_beta <Cn_beta> # [/rad] d(Cn)/d(beta) uiuc_aircraft.h
446 Cn Cn_betafCL # [/rad] Cn_beta(CL) equation uiuc_aircraft.h
447 Cn Cn_p <Cn_p> # [/rad] d(Cn)/d(p) uiuc_aircraft.h
448 Cn Cn_pfCL # [/rad] Cn_p(CL) equation uiuc_aircraft.h
449 Cn Cn_r <Cn_r> # [/rad] d(Cn)/d(r) uiuc_aircraft.h
450 Cn Cn_rfCL # [/rad] Cn_r(CL) equation uiuc_aircraft.h
451 Cn Cn_da <Cn_da> # [/rad] d(Cn)/d(da) uiuc_aircraft.h
452 Cn Cn_dr <Cn_dr> # [/rad] d(Cn)/d(dr) uiuc_aircraft.h
453 Cn Cn_drfCL # [/rad] Cn_dr(CL) equation uiuc_aircraft.h
455 # Cn(alpha,delta_a), conversion for Cn, for alpha, for delta_a [] uiuc_aircraft.h
456 Cn Cnfada <Cnfada.dat> <conversion1> <conversion2> <conversion3>
458 # Cn(beta,delta_r), conversion for Cn, for beta, for delta_r [] uiuc_aircraft.h
459 Cn Cnfbetadr <Cnfbetadr.dat> <conversion1> <conversion2> <conversion3>
461 =============================CONVERSION CODES================================
463 To calculate the aero forces, angles (eg, alfa, beta, elevator deflection, etc)
464 must be in radians. To convert input data in degree to radian, use a
465 conversion code of 1. To use no conversion, use a conversion code of 0.
467 ------------------------------------------------
471 ------------------------------------------------
472 0 no conversion (multiply by 1)
473 1 convert degrees to radians
474 =============================================================================
476 |gear kgear <kgear> # [] gear spring constant(s) uiuc_aircraft.h
477 |gear muRoll <muRoll> # [] gear rolling friction coef(s) uiuc_aircraft.h
478 |gear cgear <cgear> # [] gear damping constant(s) uiuc_aircraft.h
479 |gear strutLength <sL> # [ft] gear strut length uiuc_aircraft.h
481 ice iceTime <iceTime> # [s] time when icing begins uiuc_aircraft.h
482 ice transientTime <tT> # [s] period for eta to reach eta_final uiuc_aircraft.h
483 ice eta_final <eta_f> # [] icing severity factor uiuc_aircraft.h
484 ice kCDo <kCDo> # [] icing constant for CDo uiuc_aircraft.h
485 ice kCDK <kCDo> # [] icing constant for CDK uiuc_aircraft.h
486 ice kCD_a <kCD_a> # [] icing constant for CD_a uiuc_aircraft.h
487 |ice kCD_q <kCD_q> # [] icing constant for CD_q uiuc_aircraft.h
488 ice kCD_de <kCD_de> # [] icing constant for CD_de uiuc_aircraft.h
489 |ice kCD_dr <kCD_dr> # [] icing constant for CD_dr uiuc_aircraft.h
490 |ice kCD_df <kCD_df> # [] icing constant for CD_df uiuc_aircraft.h
491 |ice kCD_adf <kCD_adf> # [] icing constant for CD_adf uiuc_aircraft.h
492 ice kCLo <kCLo> # [] icing constant for CLo uiuc_aircraft.h
493 ice kCL_a <kCL_a> # [] icing constant for CL_a uiuc_aircraft.h
494 ice kCL_adot <kCL_adot> # [] icing constant for CL_adot uiuc_aircraft.h
495 ice kCL_q <kCL_q> # [] icing constant for CL_q uiuc_aircraft.h
496 ice kCL_de <kCL_de> # [] icing constant for CL_de uiuc_aircraft.h
497 |ice kCL_df <kCL_df> # [] icing constant for CL_df uiuc_aircraft.h
498 |ice kCL_adf <kCL_adf> # [] icing constant for CL_adf uiuc_aircraft.h
499 ice kCmo <kCmo> # [] icing constant for Cmo uiuc_aircraft.h
500 ice kCm_a <kCm_a> # [] icing constant for Cm_a uiuc_aircraft.h
501 ice kCm_adot <kCm_adot> # [] icing constant for Cm_adot uiuc_aircraft.h
502 ice kCm_q <kCm_q> # [] icing constant for Cm_q uiuc_aircraft.h
503 |ice kCm_r <kCm_r> # [] icing constant for Cm_r uiuc_aircraft.h
504 ice kCm_de <kCm_de> # [] icing constant for Cm_de uiuc_aircraft.h
505 |ice kCm_df <kCm_df> # [] icing constant for Cm_df uiuc_aircraft.h
506 ice kCYo <kCYo> # [] icing constant for CYo uiuc_aircraft.h
507 ice kCY_beta <kCy_beta> # [] icing constant for CY_beta uiuc_aircraft.h
508 ice kCY_p <kCY_p> # [] icing constant for CY_p uiuc_aircraft.h
509 ice kCY_r <kCY_r> # [] icing constant for CY_r uiuc_aircraft.h
510 ice kCY_da <kCY_da> # [] icing constant for CY_da uiuc_aircraft.h
511 ice kCY_dr <kCY_dr> # [] icing constant for CY_dr uiuc_aircraft.h
512 ice kClo <kClo> # [] icing constant for Clo uiuc_aircraft.h
513 ice kCl_beta <kCl_beta> # [] icing constant for Cl_beta uiuc_aircraft.h
514 ice kCl_p <kCl_p> # [] icing constant for Cl_p uiuc_aircraft.h
515 ice kCl_r <kCl_r> # [] icing constant for Cl_r uiuc_aircraft.h
516 ice kCl_da <kCl_da> # [] icing constant for Cl_da uiuc_aircraft.h
517 ice kCl_dr <kCl_dr> # [] icing constant for Cl_dr uiuc_aircraft.h
518 ice kCno <kCno> # [] icing constant for Cno uiuc_aircraft.h
519 ice kCn_beta <kCn_beta> # [] icing constant for Cn_beta uiuc_aircraft.h
520 ice kCn_p <kCn_p> # [] icing constant for Cn_p uiuc_aircraft.h
521 ice kCn_r <kCn_r> # [] icing constant for Cn_r uiuc_aircraft.h
522 ice kCn_da <kCn_da> # [] icing constant for Cn_da uiuc_aircraft.h
523 ice kCn_dr <kCn_dr> # [] icing constant for Cn_dr uiuc_aircraft.h
525 record Dx_pilot # [ft] x-location ls_generic.h
526 record Dy_pilot # [ft] y-loaction ls_generic.h
527 record Dz_pilot # [ft] z-location ls_generic.h
528 record Dx_cg # [ft] cg x_location ls_generic.h
529 record Dy_cg # [ft] cg y_location ls_generic.h
530 record Dz_cg # [ft] cg z_location ls_generic.h
531 record V_north # [ft/s] x-velocity ls_generic.h
532 record V_east # [ft/s] y-velocity ls_generic.h
533 record V_down # [ft/s] z-velocity ls_generic.h
534 record V_rel_wind # [ft/s] total velocity ls_generic.h
535 record Dynamic_pressure # [lb/ft^2] dynamic pressure ls_generic.h
536 record Alpha # [rad] angle of attack ls_generic.h
537 record Alpha_dot # [rad/s] rate of change of alpha ls_generic.h
538 record Beta # [rad] sideslip angle ls_generic.h
539 record Beta_dot # [rad/s] rate of change of beta ls_generic.h
540 record Gamma # [rad] flight path angle ls_generic.h
541 record P_body # [rad] roll rate ls_generic.h
542 record Q_body # [rad] pitch rate ls_generic.h
543 record R_body # [rad] yaw rate ls_generic.h
544 record Phi # [rad] bank angle ls_generic.h
545 record Theta # [rad] pitch attitude angle ls_generic.h
546 record Theta_dot # [rad] rate change of theta ls_generic.h
547 record Psi # [rad] heading angle ls_generic.h
550 record Density # [slug/ft^3] air density ls_generic.h
551 record Mass # [slug] aircraft mass ls_generic.h
552 record Simtime # [s] current sim time global
553 record dt # [s] current time step global
554 record Long_control # [] pitch input ls_cockpit.h
555 record Lat_control # [] roll input ls_cockpit.h
556 record Rudder_pedal # [] yaw input ls_cockpit.h
557 |record Throttle_pct # [%] throttle input ls_cockpit.h
558 record elevator # [rad] elevator deflection uiuc_aircraft.h
559 record aileron # [rad] aileron deflection uiuc_aircraft.h
560 record rudder # [rad] rudder deflection uiuc_aircraft.h
561 |record Throttle[3] # [%] throttle deflection ls_cockpit.h
562 record CDfaI # [] CD(alpha) uiuc_aircraft.h
563 record CDfadeI # [] CD(alpha,delta_e) uiuc_aircraft.h
564 record CD # [] drag coefficient uiuc_aircraft.h
565 record CLfaI # [] CL(alpha) uiuc_aircraft.h
566 record CLfadeI # [] CL(alpha,delta_e) uiuc_aircraft.h
567 record CL # [] lift coefficient uiuc_aircraft.h
568 record CmfadeI # [] Cm(alpha,delta_e) uiuc_aircraft.h
569 record Cm # [] pitch moment coefficient uiuc_aircraft.h
570 record CYfadaI # [] CY(alpha,delta_a) uiuc_aircraft.h
571 record CYfbetadrI # [] CY(beta,delta_r) uiuc_aircraft.h
572 record CY # [] side-force coefficient uiuc_aircraft.h
573 record ClfadaI # [] Cl(alpha,delta_a) uiuc_aircraft.h
574 record ClfbetadrI # [] Cl(beta,delta_r) uiuc_aircraft.h
575 record Cl # [] roll moment coefficient uiuc_aircraft.h
576 record CnfadaI # [] Cn(alpha,delta_a) uiuc_aircraft.h
577 record CnfbetadrI # [] Cn(beta,delta_r) uiuc_aircraft.h
578 record Cn # [] yaw moment coefficient uiuc_aircraft.h
579 record F_X_wind # [lb] aero x-force in wind-axes ls_generic.h
580 record F_Y_wind # [lb] aero y-force in wind-axes ls_generic.h
581 record F_Z_wind # [lb] aero z-force in wind-axes ls_generic.h
582 record F_X_aero # [lb] aero x-force in body-axes ls_generic.h
583 record F_Y_aero # [lb] aero y-force in body-axes ls_generic.h
584 record F_Z_aero # [lb] aero z-force in body-axes ls_generic.h
585 record F_X_engine # [lb] prop x-force in body-axes ls_generic.h
586 record F_Y_engine # [lb] prop y-force in body-axes ls_generic.h
587 record F_Z_engine # [lb] prop z-force in body-axes ls_generic.h
588 record F_X_gear # [lb] gear x-force in body-axes ls_generic.h
589 record F_Y_gear # [lb] gear y-force in body-axes ls_generic.h
590 record F_Z_gear # [lb] gear z-force in body-axes ls_generic.h
591 record F_X # [lb] total x-force in body-axes ls_generic.h
592 record F_Y # [lb] total y-force in body-axes ls_generic.h
593 record F_Z # [lb] total z-force in body-axes ls_generic.h
594 record M_l_aero # [ft-lb] aero roll mom in body axes ls_generic.h
595 record M_m_aero # [ft-lb] aero pitch mom in body axes ls_generic.h
596 record M_n_aero # [ft-lb] aero yaw mom in body axes ls_generic.h
597 record M_l_engine # [ft-lb] prop roll mom in body axes ls_generic.h
598 record M_m_engine # [ft-lb] prop pitch mom in body axes ls_generic.h
599 record M_n_engine # [ft-lb] prop yaw mom in body axes ls_generic.h
600 record M_l_gear # [ft-lb] gear roll mom in body axes ls_generic.h
601 record M_m_gear # [ft-lb] gear pitch mom in body axes ls_generic.h
602 record M_n_gear # [ft-lb] gear yaw mom in body axes ls_generic.h
603 record M_l_rp # [ft-lb] total roll mom in body axes ls_generic.h
604 record M_m_rp # [ft-lb] total pitch mom in body axes ls_generic.h
605 record M_n_rp # [ft-lb] total yaw mom in body axes ls_generic.h
607 **********************************************************************
609 **********************************************************************
612 The following data is required for the simulator to function;
613 otherwise either the UIUC Aero Model or LaRCsim parts of the code will
616 1) initial aircraft state (LaRCsim)
617 Dx_pilot x-location [ft]
618 Dy_pilot y-location [ft]
619 Dz_pilot z-location [ft]
621 (items below causing conflict with Flight Gear)
622 |V_north x-velocity [ft/s]
623 |V_east y-velocity [ft/s]
624 |V_down z-velocity [ft/s]
626 P_body roll rate [rad/s]
627 Q_body pitch rate [rad/s]
628 R_body yaw rate [rad/s]
630 Theta pitch attitude angle [rad]
631 Psi heading angle [rad]
633 2) aircraft geometry (UIUC Aero Model)
635 cbar mean aerodynamic chord [ft]
636 Sw wing planform area [ft^2]
638 3) engine properties (UIUC Engine Model)
639 (some engine model must be specified, such as...)
644 4) mass variables (LaRCsim)
645 Mass aircraft mass [slug]
646 I_xx roll inertia [slug-ft^2]
647 I_yy pitch inertia [slug-ft^2]
648 I_zz yaw inertia [slug-ft^2]
649 I_xz lateral cross inertia [slug-ft^2]
651 5) aerodynamic force/moment components (Aero Model)
652 CLo lift coef for all angles = 0 []
653 CL_a lift curve slope, d(CL)/d(alpha) [/rad]
654 CDo drag coef for all angles = 0 []
655 CDK constant, as in CD=CDo+K*CL^2 []
657 CD_a d(CD)/d(alpha) [/rad]
658 Cmo pitch mom coef for all angles=0 []
659 Cm_a d(Cm)/d(alpha) [/rad]
660 CY_beta d(CY)/d(beta) [/rad]
661 Cl_beta d(Cl)/d(beta) [/rad]
662 Cn_beta d(Cn)/d(beta) [/rad]
664 7) gear properties (none yet)
666 With the current version, the C172 model gear model is used for *ALL*
667 aircraft. This can produce some interesting effects with heavy
668 aircraft (eg, Convair model), and light aircraft (eg, Pioneer UAV)
670 **********************************************************************