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1 | //Closing on Space Station from 2 km | |
2 | clearscreen. | |
3 | set pi to 3.1415926535897932384626433832795028841971693993751058209749445923. | |
4 | set mu to 3.986*(10^14). | |
5 | ag1 off. | |
6 | set target to "LIESS". | |
7 | set lateraloffset to 0. | |
8 | set verticaloffset to 0. | |
9 | rcs on. | |
10 | sas off. | |
11 | gear off. | |
12 | lock steering to prograde + r(0,0,180). | |
13 | ||
14 | set maneuverSpeed to 1. | |
15 | ||
16 | //functions | |
17 | function lateraldist { | |
18 | set uct to vcrs(ship:up:vector,target:position). //up cross target | |
19 | set ev to vcrs(ship:body:position,ship:north:vector). | |
20 | ||
21 | if vang(uct,ship:north:vector) > 90 { | |
22 | set thdg to vang(uct,ev). | |
23 | } else { | |
24 | set thdg to 360-vang(uct,ev). //heading of the target vector | |
25 | }. | |
26 | if thdg > 360 { | |
27 | set thdg to thdg-360. | |
28 | }. | |
29 | set ucv to vcrs(ship:up:vector,ship:velocity:orbit). | |
30 | if vang(ucv,ship:north:vector) > 90 { | |
31 | set vhdg to vang(ucv,ev). | |
32 | } else { | |
33 | set vhdg to 360-vang(ucv,ev). //heading of the velocity vector | |
34 | } | |
35 | ||
36 | if vhdg-thdg > 180{ | |
37 | set hdgdiff to vhdg-thdg-360. | |
38 | }. else { | |
39 | set hdgdiff to vhdg-thdg. | |
40 | }. | |
41 | set latdist to sin(hdgdiff)*target:position:mag. | |
42 | return latdist. | |
43 | }. | |
44 | function verticaldist { | |
45 | set velangle to vang(ship:velocity:orbit,ship:up:vector). | |
46 | set targangle to vang(target:position,ship:up:vector). | |
47 | set pitchdiff to velangle-(targangle-verticaloffset). | |
48 | set vdist to sin(pitchdiff)*target:position:mag. | |
49 | return vdist. | |
50 | }. | |
51 | function depthdist { | |
52 | set targpos to (target:position+ship:body:position). | |
53 | set ang to vang(targpos,ship:body:position)*pi/180. | |
54 | set ddist to ang*ship:body:position:mag. | |
55 | return ddist. | |
56 | } | |
57 | function lateralinputFunction { | |
58 | if abs(lateraldistance2) > 10 { | |
59 | set vlat to (lateralDistance2-lateralDistance1)/(dt). | |
60 | if lateralDistance2 > 0 { | |
61 | set ms to -maneuverSpeed. | |
62 | }. else { | |
63 | set ms to maneuverSpeed. | |
64 | } | |
65 | set vlatError to ms-vlat. | |
66 | set latinput to kpv*vlatError. | |
67 | }. else { | |
68 | set slatError to lateralDistance2. | |
69 | set vlat to (lateralDistance2-lateralDistance1)/(dt). | |
70 | set latinput to -((kps*lateralDistance2)+(kds*vlat)). | |
71 | }. | |
72 | return latinput. | |
73 | } | |
74 | function verticalinputFunction { | |
75 | if abs(verticalDistance2+extraH) > 10 { | |
76 | set vver to (verticalDistance2-verticalDistance1)/(dt). | |
77 | if verticaldistance2+extraH > 0 { | |
78 | set ms to -maneuverSpeed. | |
79 | }. else { | |
80 | set ms to maneuverSpeed. | |
81 | } | |
82 | set vverError to ms-vver. | |
83 | set vertinput to kpv*vverError. | |
84 | /////////////////////////////////////////// | |
85 | }. else { | |
86 | set sverError to (verticaldistance2+extraH). | |
87 | set vver to (verticalDistance2-verticalDistance1)/(dt). | |
88 | set vertinput to -((kps*sverError)+(kds*vver)). | |
89 | }. | |
90 | return vertinput. | |
91 | }. | |
92 | function depthinputFunction { | |
93 | if abs(depthDistance2-depthoffset) > 10 { | |
94 | set vdep to (depthDistance2-depthDistance1)/(dt). | |
95 | if depthdistance2-depthoffset > 0 { | |
96 | set ms to -maneuverSpeed. | |
97 | }. else { | |
98 | set ms to maneuverSpeed. | |
99 | } | |
100 | set vdepError to ms-vdep. | |
101 | set depinput to -kpv*vdepError. | |
102 | /////////////////////////////////////////// | |
103 | }. else { | |
104 | set sdepError to depthdistance2-depthoffset. | |
105 | set vdep to ((depthDistance2)-(depthDistance1))/(dt). | |
106 | set depinput to ((kps*sdepError)+(kds*vdep)). | |
107 | }. | |
108 | return depinput. | |
109 | } | |
110 | //////////////////////////////////////////////////////////////////////////////// | |
111 | //defining values and gains | |
112 | set kpv to 1. | |
113 | set kps to .1. | |
114 | set kds to 2. | |
115 | ||
116 | set latinput to 0. | |
117 | set verticalinput to 0. | |
118 | set depthinput to 0. | |
119 | set extraH to 0. | |
120 | set vver to 0. | |
121 | set depthoffset to depthdist(). | |
122 | ||
123 | //matching planes | |
124 | set lateraldistance2 to 4123. | |
125 | ||
126 | until lateralDistance2<200 { | |
127 | if 2 > 1 { | |
128 | set lateralDistance1 to lateraldist(). | |
129 | set verticalDistance1 to verticaldist(). | |
130 | set depthDistance1 to depthdist(). | |
131 | set t1 to time:seconds. | |
132 | print "Lateral Difference "+round(lateralDistance1)+" m". | |
133 | print "Vertical Difference "+round(verticalDistance1)+" m". | |
134 | print "Depth Difference "+round(depthDistance1)+" m". | |
135 | print " ". | |
136 | print "Lateral Input "+round(100*latinput). | |
137 | print "Vertical Input "+round(100*verticalinput). | |
138 | print "Depth Input "+round(100*depthinput). | |
139 | print " ". | |
140 | print "Depth Offset "+round(depthoffset)+" m". | |
141 | wait 0.2. | |
142 | clearscreen. | |
143 | set lateralDistance2 to lateraldist(). | |
144 | set verticalDistance2 to verticaldist(). | |
145 | set depthDistance2 to depthdist(). | |
146 | set t2 to time:seconds. | |
147 | set dt to t2-t1. | |
148 | }. //this is just so i can hide it easily | |
149 | //////////////////////////////////////////// | |
150 | set lateralinput to 0. | |
151 | set verticalinput to verticalinputfunction(). | |
152 | set depthinput to depthinputfunction(). | |
153 | /////////////////////////////////////////// | |
154 | set ship:control:starboard to lateralinput. | |
155 | set ship:control:top to verticalinput. | |
156 | set ship:control:fore to depthinput. | |
157 | ||
158 | if sas =true { | |
159 | unlock steering. | |
160 | }. else { | |
161 | lock steering to prograde+r(0,0,180). | |
162 | }. | |
163 | ||
164 | }. | |
165 | ||
166 | lock steering to prograde+r(0,0,180). | |
167 | ||
168 | //Two KM station keeping | |
169 | until ag1 { | |
170 | if 2 > 1 { | |
171 | set lateralDistance1 to lateraldist(). | |
172 | set verticalDistance1 to verticaldist(). | |
173 | set depthDistance1 to depthdist(). | |
174 | set t1 to time:seconds. | |
175 | print "Lateral Difference "+round(lateralDistance1)+" m". | |
176 | print "Vertical Difference "+round(verticalDistance1)+" m". | |
177 | print "Depth Difference "+round(depthDistance1)+" m". | |
178 | print " ". | |
179 | print "Lateral Input "+round(100*latinput). | |
180 | print "Vertical Input "+round(100*verticalinput). | |
181 | print "Depth Input "+round(100*depthinput). | |
182 | print " ". | |
183 | print "Depth Offset "+round(depthoffset)+" m". | |
184 | wait 0.2. | |
185 | clearscreen. | |
186 | set lateralDistance2 to lateraldist(). | |
187 | set verticalDistance2 to verticaldist(). | |
188 | set depthDistance2 to depthdist(). | |
189 | set t2 to time:seconds. | |
190 | set dt to t2-t1. | |
191 | }. //this is just so i can hide it easily | |
192 | //////////////////////////////////////////// | |
193 | set lateralinput to lateralinputFunction(). | |
194 | set verticalinput to verticalinputfunction(). | |
195 | set depthinput to depthinputfunction(). | |
196 | /////////////////////////////////////////// | |
197 | set ship:control:starboard to lateralinput. | |
198 | set ship:control:top to verticalinput. | |
199 | set ship:control:fore to depthinput. | |
200 | }. | |
201 | ||
202 | ||
203 | ||
204 | set extrah to -1000. //initiates downward maneuver | |
205 | ag1 off. | |
206 | ||
207 | ||
208 | //downward maneuver begins | |
209 | until ag1 { | |
210 | if 2 > 1 { | |
211 | set lateralDistance1 to lateraldist(). | |
212 | set verticalDistance1 to verticaldist(). | |
213 | set depthDistance1 to depthdist(). | |
214 | set t1 to time:seconds. | |
215 | print "Lateral Difference "+round(lateralDistance1)+" m". | |
216 | print "Vertical Difference "+round(verticalDistance1)+" m". | |
217 | print "Depth Difference "+round(depthDistance1)+" m". | |
218 | print " ". | |
219 | print "Lateral Input "+round(100*latinput). | |
220 | print "Vertical Input "+round(100*verticalinput). | |
221 | print "Depth Input "+round(100*depthinput). | |
222 | print " ". | |
223 | print "Depth Offset "+round(depthoffset)+" m". | |
224 | wait 0.2. | |
225 | clearscreen. | |
226 | set lateralDistance2 to lateraldist(). | |
227 | set verticalDistance2 to verticaldist(). | |
228 | set depthDistance2 to depthdist(). | |
229 | set t2 to time:seconds. | |
230 | set dt to t2-t1. | |
231 | }. //this is just so i can hide it easily | |
232 | //////////////////////////////////////////// | |
233 | set lateralinput to lateralinputFunction(). | |
234 | set verticalinput to verticalinputfunction(). | |
235 | set depthinput to depthinputfunction(). | |
236 | /////////////////////////////////////////// | |
237 | set ship:control:starboard to lateralinput. | |
238 | set ship:control:top to verticalinput. | |
239 | set ship:control:fore to depthinput. | |
240 | }. | |
241 | //I found a short boost foreward works well. this is about 1 m/s dv prograde | |
242 | //foreward acceleration averages .4 m/s2 | |
243 | set ship:control:neutralize to true. | |
244 | print "Executing foreward boost maneuver". | |
245 | set t0 to time:seconds. | |
246 | set ship:control:fore to 1. | |
247 | wait until time:seconds>t0+2.5. | |
248 | set ship:control:neutralize to true. | |
249 | ||
250 | //coasting | |
251 | set extrah to 0. | |
252 | clearscreen. | |
253 | set ship:control:neutralize to true. | |
254 | ||
255 | lock steering to prograde + r(0,0,180). | |
256 | ag1 off. | |
257 | unlock steering. | |
258 | sas on. | |
259 | wait until ship:altitude<(target:altitude-21). | |
260 | until ship:altitude>(target:altitude-20) { | |
261 | print "Coasting One". | |
262 | print "Altitude Difference: "+round(abs(target:altitude-ship:altitude))+" m". | |
263 | wait 0.1. | |
264 | clearscreen. | |
265 | }. | |
266 | set warp to 0. | |
267 | sas off. | |
268 | lock steering to prograde + r(0,0,180). | |
269 | print "Preparing for Stationkeeping". | |
270 | wait until ship:altitude>target:altitude. | |
271 | set depthoffset to depthdist(). | |
272 | ||
273 | ||
274 | //stationkeeping at approximately 1km | |
275 | until ag1 { | |
276 | if 2 > 1 { | |
277 | set lateralDistance1 to lateraldist(). | |
278 | set verticalDistance1 to verticaldist(). | |
279 | set depthDistance1 to depthdist(). | |
280 | set t1 to time:seconds. | |
281 | print "Lateral Difference "+round(lateralDistance1)+" m". | |
282 | print "Vertical Difference "+round(verticalDistance1)+" m". | |
283 | print "Depth Difference "+round(depthDistance1)+" m". | |
284 | print " ". | |
285 | print "Lateral Input "+round(100*latinput). | |
286 | print "Vertical Input "+round(100*verticalinput). | |
287 | print "Depth Input "+round(100*depthinput). | |
288 | print " ". | |
289 | print "Depth Offset "+round(depthoffset)+" m". | |
290 | wait 0.2. | |
291 | clearscreen. | |
292 | set lateralDistance2 to lateraldist(). | |
293 | set verticalDistance2 to verticaldist(). | |
294 | set depthDistance2 to depthdist(). | |
295 | set t2 to time:seconds. | |
296 | set dt to t2-t1. | |
297 | }. //this is just so i can hide it easily | |
298 | //////////////////////////////////////////// | |
299 | set lateralinput to lateralinputFunction(). | |
300 | set verticalinput to verticalinputfunction(). | |
301 | set depthinput to depthinputfunction(). | |
302 | /////////////////////////////////////////// | |
303 | set ship:control:starboard to lateralinput. | |
304 | set ship:control:top to verticalinput. | |
305 | set ship:control:fore to depthinput. | |
306 | }. | |
307 | ag1 off. | |
308 | ||
309 | //initiates second closing maneuver | |
310 | set maneuverspeed to 0.5. | |
311 | set extrah to -1000. | |
312 | ag1 off. | |
313 | ||
314 | ||
315 | until ag1 { | |
316 | if 2 > 1 { | |
317 | set lateralDistance1 to lateraldist(). | |
318 | set verticalDistance1 to verticaldist(). | |
319 | set depthDistance1 to depthdist(). | |
320 | set t1 to time:seconds. | |
321 | print "Lateral Difference "+round(lateralDistance1)+" m". | |
322 | print "Vertical Difference "+round(verticalDistance1)+" m". | |
323 | print "Depth Difference "+round(depthDistance1)+" m". | |
324 | print " ". | |
325 | print "Lateral Input "+round(100*latinput). | |
326 | print "Vertical Input "+round(100*verticalinput). | |
327 | print "Depth Input "+round(100*depthinput). | |
328 | print " ". | |
329 | print "Depth Offset "+round(depthoffset)+" m". | |
330 | wait 0.2. | |
331 | clearscreen. | |
332 | set lateralDistance2 to lateraldist(). | |
333 | set verticalDistance2 to verticaldist(). | |
334 | set depthDistance2 to depthdist(). | |
335 | set t2 to time:seconds. | |
336 | set dt to t2-t1. | |
337 | }. //this is just so i can hide it easily | |
338 | //////////////////////////////////////////// | |
339 | set lateralinput to lateralinputFunction(). | |
340 | set verticalinput to verticalinputfunction(). | |
341 | set depthinput to depthinputfunction(). | |
342 | /////////////////////////////////////////// | |
343 | set ship:control:starboard to lateralinput. | |
344 | set ship:control:top to verticalinput. | |
345 | set ship:control:fore to depthinput. | |
346 | }. | |
347 | ||
348 | set ship:control:neutralize to true. | |
349 | print "Executing foreward boost maneuver". | |
350 | set t0 to time:seconds. | |
351 | set ship:control:fore to 1. | |
352 | wait until time:seconds>t0+1.25. //average acceleration 0.4. this is 0.5 m/s dv | |
353 | set ship:control:neutralize to true. | |
354 | ||
355 | set extrah to 0. | |
356 | clearscreen. | |
357 | set ship:control:neutralize to true. | |
358 | lock steering to prograde + r(0,0,180). | |
359 | ag1 off. | |
360 | unlock steering. | |
361 | sas on. | |
362 | wait until ship:altitude<(target:altitude-21). | |
363 | until ship:altitude>(target:altitude-20) { | |
364 | print "Coasting". | |
365 | print "Altitude Difference: "+round(abs(target:altitude-ship:altitude))+" m". | |
366 | wait 0.1. | |
367 | clearscreen. | |
368 | }. | |
369 | set warp to 0. | |
370 | sas off. | |
371 | lock steering to prograde + r(0,0,180). | |
372 | print "Preparing for Stationkeeping". | |
373 | wait until ship:altitude>target:altitude. | |
374 | set depthoffset to depthdist(). | |
375 | ||
376 | ||
377 | //stationkeeping at approximately 500m | |
378 | until ag1 { | |
379 | if 2 > 1 { | |
380 | set lateralDistance1 to lateraldist(). | |
381 | set verticalDistance1 to verticaldist(). | |
382 | set depthDistance1 to depthdist(). | |
383 | set t1 to time:seconds. | |
384 | print "Lateral Difference "+round(lateralDistance1)+" m". | |
385 | print "Vertical Difference "+round(verticalDistance1)+" m". | |
386 | print "Depth Difference "+round(depthDistance1)+" m". | |
387 | print " ". | |
388 | print "Lateral Input "+round(100*latinput). | |
389 | print "Vertical Input "+round(100*verticalinput). | |
390 | print "Depth Input "+round(100*depthinput). | |
391 | print " ". | |
392 | print "Depth Offset "+round(depthoffset)+" m". | |
393 | wait 0.2. | |
394 | clearscreen. | |
395 | set lateralDistance2 to lateraldist(). | |
396 | set verticalDistance2 to verticaldist(). | |
397 | set depthDistance2 to depthdist(). | |
398 | set t2 to time:seconds. | |
399 | set dt to t2-t1. | |
400 | }. //this is just so i can hide it easily | |
401 | //////////////////////////////////////////// | |
402 | set lateralinput to lateralinputFunction(). | |
403 | set verticalinput to verticalinputfunction(). | |
404 | set depthinput to depthinputfunction(). | |
405 | /////////////////////////////////////////// | |
406 | set ship:control:starboard to lateralinput. | |
407 | set ship:control:top to verticalinput. | |
408 | set ship:control:fore to depthinput. | |
409 | ||
410 | }. | |
411 | ag1 off. | |
412 | ||
413 | //initiates third closing maneuver | |
414 | set maneuverspeed to 0.25. | |
415 | set extrah to -1000. | |
416 | ag1 off. | |
417 | ||
418 | ||
419 | until ag1 { | |
420 | if 2 > 1 { | |
421 | set lateralDistance1 to lateraldist(). | |
422 | set verticalDistance1 to verticaldist(). | |
423 | set depthDistance1 to depthdist(). | |
424 | set t1 to time:seconds. | |
425 | print "Lateral Difference "+round(lateralDistance1)+" m". | |
426 | print "Vertical Difference "+round(verticalDistance1)+" m". | |
427 | print "Depth Difference "+round(depthDistance1)+" m". | |
428 | print " ". | |
429 | print "Lateral Input "+round(100*latinput). | |
430 | print "Vertical Input "+round(100*verticalinput). | |
431 | print "Depth Input "+round(100*depthinput). | |
432 | print " ". | |
433 | wait 0.2. | |
434 | clearscreen. | |
435 | set lateralDistance2 to lateraldist(). | |
436 | set verticalDistance2 to verticaldist(). | |
437 | set depthDistance2 to depthdist(). | |
438 | set t2 to time:seconds. | |
439 | set dt to t2-t1. | |
440 | }. //this is just so i can hide it easily | |
441 | //////////////////////////////////////////// | |
442 | set lateralinput to lateralinputFunction(). | |
443 | set verticalinput to verticalinputfunction(). | |
444 | set depthinput to depthinputfunction(). | |
445 | /////////////////////////////////////////// | |
446 | set ship:control:starboard to lateralinput. | |
447 | set ship:control:top to verticalinput. | |
448 | set ship:control:fore to depthinput. | |
449 | }. | |
450 | ||
451 | set ship:control:neutralize to true. | |
452 | print "Executing foreward boost maneuver". | |
453 | set t0 to time:seconds. | |
454 | set ship:control:fore to 1. | |
455 | wait until time:seconds>t0+.5. //average acceleration 0.4. this is 0.25 m/s dv | |
456 | set ship:control:neutralize to true. | |
457 | ||
458 | set extrah to 0. | |
459 | clearscreen. | |
460 | set ship:control:neutralize to true. | |
461 | lock steering to prograde + r(0,0,180). | |
462 | ag1 off. | |
463 | print "Coasting". | |
464 | unlock steering. | |
465 | sas on. | |
466 | wait until ship:altitude<(target:altitude-11). | |
467 | until ship:altitude>(target:altitude-10) { | |
468 | print "Coasting". | |
469 | print "Altitude Difference: "+round(abs(target:altitude-ship:altitude))+" m". | |
470 | wait 0.1. | |
471 | clearscreen. | |
472 | }. | |
473 | set warp to 0. | |
474 | sas off. | |
475 | lock steering to prograde + r(0,0,180). | |
476 | print "Preparing for Stationkeeping". | |
477 | wait until ship:altitude>target:altitude. | |
478 | set depthoffset to 175. | |
479 | ||
480 | //stationkeeping at approximately 175m | |
481 | set maneuverSpeed to 1. | |
482 | until ag1 { | |
483 | if 2 > 1 { | |
484 | set lateralDistance1 to lateraldist(). | |
485 | set verticalDistance1 to verticaldist(). | |
486 | set depthDistance1 to target:position:mag. | |
487 | set t1 to time:seconds. | |
488 | print "Lateral Difference "+round(lateralDistance1)+" m". | |
489 | print "Vertical Difference "+round(verticalDistance1)+" m". | |
490 | print "Depth Difference "+round(depthDistance1)+" m". | |
491 | print " ". | |
492 | print "Lateral Input "+round(100*latinput). | |
493 | print "Vertical Input "+round(100*verticalinput). | |
494 | print "Depth Input "+round(100*depthinput). | |
495 | print " ". | |
496 | print "Depth Offset "+round(depthoffset)+" m". | |
497 | wait 0.2. | |
498 | clearscreen. | |
499 | set lateralDistance2 to lateraldist(). | |
500 | set verticalDistance2 to verticaldist(). | |
501 | set depthDistance2 to target:position:mag. | |
502 | set t2 to time:seconds. | |
503 | set dt to t2-t1. | |
504 | }. //this is just so i can hide it easily | |
505 | //////////////////////////////////////////// | |
506 | set lateralinput to lateralinputFunction(). | |
507 | set verticalinput to verticalinputfunction(). | |
508 | set depthinput to depthinputfunction(). | |
509 | /////////////////////////////////////////// | |
510 | set ship:control:starboard to lateralinput. | |
511 | set ship:control:top to verticalinput. | |
512 | set ship:control:fore to depthinput. | |
513 | ||
514 | }. | |
515 | set ship:control:neutralize to true. | |
516 | sas on. | |
517 | ag1 off. |