Apollo Lunar Excursion Module Primary Guidance, Navigation, And

Apollo Lunar Excursion Module Primary Guidance, Navigation, And

• «u t -1021042 r\ PROJECT APOLLO LUNAR EXCURSION MODULE PRIMARY GUIDANCE, NAVIGATION AND CONTROL SYSTEM MANUA VOLUME I ELECTR0NICS DIVISION OF GENERAL MOTORS 'J. INITIAL TDRR 26432 TYPE I APPROVED BY NASA APOLLO. LUNAR EXCURSION MODULE 4 PRIMARY GUIDANCE, NAVIGATION, AND CONTROL SYSTEM « MANUAL VOLUME I OF II PREPARED FOR NATIONAL AERONAUTICS AND SPACE ADMINISTRATION * MANNED SPACECRAFT CENTER BY AC ELECTRONICS DIVISION OF GENERAL MOTORS MlLWAUKEE,WISCONSIN 53201 * t ' y ° NASA CONTRACT NAS 9-497 m < 4 / h •4 ND-1021042 LEM PRIMARY GUIDANCE, NAVIGATION, AND CONTROL SYSTEM MANUAL Record of Revisions Approval Rev TDRR Date Pages Revised Let Number MIT NASA l * * p* s I-iii/l-iv * « f 1 * * V ND-1021042 LEM PRIMARY GUIDANCE, NAVIGATION, AND CONTROL SYSTEM MANUAL PREPARED BY TITLE DATE n i / u . j J.-;L (l[ .uiz(^^ AC Electronics i; 3 EXAMINED BY TITLE DATE <0>. / ut/' Cl ^ ^ <•' L i‘i rM' .3 ^ l£r£» AC Electronics APPROVED BY TITLE DATE ../ 7 ',• y>/ J,'c£ / ^r9 i/ 'Ja-k- AC Electronljctronlcis O APPROVED BY TITLE DATE / MIT/IL APPROVED BY TITLE DATE HJfiLf. CcE !C t j-o MIT/ll/ / f s/ APPROVED BY TITLE DATE ;/ /; • / /' ■ V -/* ‘ NASA/MSC I-v/l-vi ND-1021042 LEM PRIMARY GUIDANCE, NAVIGATION, AND CONTROL SYSTEM MANUAL LIST OF EFFECTIVE PAGES TOTAL NUMBER OF PAGES IN THIS PUBLICATION IS 712 CONSISTING OF THE FOLLOWING Page No. Rev. Page No. Rev. Volume I 4-1 thru 4-45. Original 4-46 Blank. Original Title. Original 4-47 thru 4-79. Original I-ii Blank. Original 4-80 Blank. Original I-iii . Original 4-81. Original I-iv Blank. Original 4-82 Blank. Original I—v. Original 4-83. Original I-vi Blank. Original 4-84 Blank. Original I-vii thru I-xv. Original 4-85. Original I-xvi Blank. Original 4-86 Blank. Original I-xvii thru I-xxiii. Original 4-87. Original I-xxiv Blank. Original 4-88 Blank. Original I-xxv thru 4-89. Original I-xxvii. Original 4-90 Blank. Original I-xxviii Blank. Original 4-91. Original I-xxix. Original 4-92 Blank. Original I-xxx Blank. Original 4-93. Original I-xxxi. Original 4-94 Blank. Original I-xxxii Blank. Original 4-95. Original I-xxxiii. Original 4-96 Blank. Original I-xxxiv Blank. Original 4-97. Original 1- 1 thru 1-16. Original 4-98 Blank. Original 2- 1 thru 2-23. Original 4-99. Original 2-24 Blank. Original 4-100 Blank. Original 2-25 thru 2-27. Original 4-101. Original 2-28 Blank. Original 4-102 Blank. Original 2-29 thru 2-31. Original 4-103. Original 2-32 Blank. Original 4-104 Blank. Original 2-33 thru 2-43. Original 4-105. Original 2-44 Blank. Original 4-106 Blank. Original 2- 45 thru 2-60. Original 4-107 thru 4-205 . Original 3- 1 thru 3-30. Original 4-206 Blank. Original I-vii ND-1021042 MANUAL LEM PRIMARY GUIDANCE, NAVIGATION, AND CONTROL SYSTEM LIST OF EFFECTIVE PAGES (cont) Page No. Rev. Page No. Rev. 4-207 .Original 4-259 . Original 4-208 Blank.Original 4-260 Blank . Original 4-209 .Original 4-261. Original 4-210 Blank.Original 4-262 Blank . Original 4-211.Original 4-263 thru 4-267 Original 4-212 Blank.Original 4-268 Blank . Original 4-213.Original 4-269. Original 4-214 Blank.Original 4-270 Blank . Original 4-215.Original 4-271 thru 4-273 Original 4-216 Blank.Original 4-274 Blank . Original 4-217.Original 4-275 . Original 4-218 Blank.Original 4-276 Blank . Original 4-219.Original 4-277 thru 4-281 Original 4-220 Blank.Original 4-282 Blank . Original 4-221.Original 4-283 . Original 4-222 Blank.Original 4-284 Blank . Original 4-223 thru 4-227 .Original 4-285. Original 4-228 Blank.Original 4-286 Blank . Original 4-229 thru 4-231.Original 4-287 . Original 4-232 Blank.Original 4-288 Blank . Original 4-289. Original Volume II 4-290 Blank . Original 4-291. Original Title.Original 4-292 Blank . Original Il-ii Blank.Original 4-293 . Original II-iii thru n-viii.Original 4-294 Blank . Original 4-233 thru 4-239 .Original 4-295 . Original 4-240 Blank.Original 4-296 Blank . Original 4-241 thru 4-243 .Original 4-297 . Original 4-244 Blank.Original 4-298 Blank . Original 4-245 .Original 4-299 . Original 4-246 Blank.Original 4-300 Blank . Original 4-247 .Original 4-301 thru 4-359 Original 4-248 Blank.Original 4-360 Blank . Original 4-249 thru 4-257 .Original 4-361. Original 4-258 Blank.Original 4-362 Blank . Original I-viii ND-1021042 LEM PRIMARY GUIDANCE, NAVIGATION, AND CONTROL SYSTEM MANUAL LIST OF EFFECTIVE PAGES (cont) Page No. Rev. Page No. Rev. 4-363 thru 4-369 .Original 4-421 .Original 4-370 Blank.Original 4-422 Blank.Original 4-371 thru 4-373 .Original 4-423 .Original 4-374 Blank.Original 4-424 Blank.Original 4-375 .Original 4-425 .Original 4-376 Blank.Original 4-426 Blank.Original 4-377 .Original 4-427 thru 4-429 .Original 4-378 Blank.Original 4-430 Blank.Original 4-379 .Original 4-431 thru 4-433 .Original 4-380 Blank.Original 4-434 Blank.Original 4-381 .Original 4-435 thru 4-437 .Original 4-382 Blank.Original 4-438 Blank.Original 4-383 .Original 4-439 thru 4-441.Original 4-384 Blank.Original 4-442 Blank.Original 4-385 .. Original 4-443 thru 4-445 .Original 4-386 Blank.Original 4-446 Blank.Original 4-387 .Original 4-447 thru 4-451.Original 4-388 Blank.Original 4-452 Blank.Original 4-389 .Original 4-453 .Original 4-390 Blank.Original 4-454 Blank.Original 4-391 .Original 4-455 thru 4-461.Original 4-392 Blank.Original 4-462 Blank.Original 4-393 thru 4-401.Original 4-463 thru 4-465 .Original 4-402 Blank.Original 4-466 Blank.Original 4-403 thru 4-407 .Original 4-467 thru 4-469 .Original 4-408 Blank.Original 4-470 Blank.Original 4-409 .Original 4-471 thru 4-485 .Original 4-410 Blank.Original 4-486 Blank.Original 4-411 thru 4-413.Original 4-487 .Original 4-414 Blank.Original 4-488 Blank.Original 4-415 thru 4-417.Original 4-489 .Original 4-418 Blank.Original 4-490 Blank.Original 4-419 .Original 4-491 thru 4-493 .Original 4-420 Blank.Original 4-494 Blank.Original I-ix ND-1021042 MANUAL LEM PRIMARY GUIDANCE, NAVIGATION, AND CONTROL SYSTEM LIST OF EFFECTIVE PAGES (cont) Page No. Rev. 5-1 thru 5-3.Original 5-4 Blank.Original 5- 5 thru 5-8.Original 6- 1 thru 6-11.Original 6- 12 Blank .Original 7- 1 thru 7-15 .Original 7-16 Blank.Original 7-17 Original 7-18 Blank.Original 7-19.Original 7-20 Blank.Original 7-21 .Original 7-22 Blank.Original 7-23 .Original 7-24 Blank.Original 7-25 .Original 7-26 Blank.Original 7-27 .Original 7- 28 Blank.Original 8- 1 thru 8-6.Original A-l thru A-7 Original A-8 Blank .Original B-l .Original B-2 Blank .Original C-l thru C-6 Original ND-1021042 LEM PRIMARY GUIDANCE, NAVIGATION, AND CONTROL SYSTEM MANUAL CONTENTS Chapter Page Volume I 1 SYSTEM TIE-IN . 1-1 1-1 Scope. 1_1 1-2 LEM Mission . 1-1 1-2.1 Separation and Transfer Orbit Insertion. 1-1 1-2.2 Descent Coast . 1-1 1-2.3 Powered Descent and Landing. 1-2 1-2.4 Lunar Stay . 1-3 1-2.5 Launch and Powered Ascent. 1-3 1-2.6 Rendezvous and Docking . 1-3 1-3 LEM Structure . 1-4 1-3.1 Ascent Stage . 1-4 1-3.2 Descent Stage . 1-7 1-4 LEM Systems. 1-7 1-4.1 Primary Guidance, Navigation, and Control System. 1-7 1-4.2 Stabilization and Control System. 1-8 1-4.3 Propulsion System . 1-9 1-4.4 Reaction Control System . 1-9 1-4.5 Electrical Power System. 1-10 1-4.6 Environmental Control System . 1-10 1-4.7 Communications and Instrumentation System. 1-10 1- 5 PGNCS Interface . 1-10 1-5.1 Systems . 1-12 1-5.2 Displays and Controls. 1-12 1- 5.3 Landing Radar. 1-12 2 SYSTEM AND SUBSYSTEM FUNCTIONAL ANALYSIS. 2-1 2- 1 Scope . 2-1 2-2 Primary Guidance, Navigation, and Control System. 2-1 2-3 LEM and PGNCS Axes. 2-2 2- 3.1 LEM Spacecraft Axes. 2-2 2-3.2 Navigation Base Axes. 2-2 2-3.3 Inertial Axes. 2-2 I-xi ND-1021042 MANUAL LEM PRIMARY GUIDANCE, NAVIGATION, AND CONTROL SYSTEM CONTENTS (cont) Chapter Page 2-4 Inertial Subsystem . 2-4 2-4.1 Stabilization Loop. 2-5 2-4.2 Fine Align Electronics. 2-9 2-4.3 Accelerometer Loop . 2-14 2-4.4 IMU Temperature Control System . 2-21 2-4.5 ISS Modes of Operation. 2-25 2-4.6 ISS Power Supplies . 2-37 2-5 LEM Optical Rendezvous Subsystem. 2-41 2- 6 Computer Subsystem. 2-42 2-6.1 Programs . 2-47 2-6.2 Machine Instructions . 2-48 2-6.3 Timer. 2-50 2-6.4 Sequence Generator. 2-51 2-6.5 Central Processor. 2-52 2-6.6 Priority Control. 2-54 2-6.7 Input-Output . 2-55 2-6.8 Memory .

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