https://ntrs.nasa.gov/search.jsp?R=19720005243 2019-04-06T00:13:19+00:00Z \ WHAT MADE It- _. APOLLO A SUCCESS? =__ _t U.S.A. NATIONAL AERONAUTICS AND SPACE ADMINISTRATION NASA SP-287 WHAT MADE APOLLO A SUCCESS? A series of eight articles reprinted by permission from the March 1970 issue of Astronautics & Aeronautics, a publication of the American Institute of Aero- nautics and Astronautics 1,2_- _ Scientific and Technical Information O/]ic__ 19-'1 NATIONAL AERONAUTICS AND SPACE ADMINISTRATION Washington, D.C. For sale by the National Technical Information Service, Springfield, Virginia 22151 - Price $3.00 CONTENTS Section Page 1. INTRODUCTION ............................ 1 By George M. Low DESIGN PRINCIPLES STRESSING SIMPLICITY ........... 15 o By Kenneth S. Kleinknecht TESTING TO ENSURE MISSION SUCCESS .............. 21 o By Scott H. Simpkinson . APOLLO CREW PROCEDURES, SIMULATION, AND FLIGHT PLANNING ............................. 31 By Warren J. North and C. H. Woodling FLIGHT CONTROL IN THE APOLLO PROGRAM .......... 41 o By Eugene F. Kranz and James Otis Covington ACTION ON MISSION EVALUATION AND FLIGHT . ANOMALIES ............................ 53 By Donald D. Arabian TECHNIQUES OF CONTROLLING THE TRAJECTORY ....... 59 o By Howard W. Tindall, Jr. FLEXIBLE YET DISCIPLINED MISSION PLANNING ........ 69 o By C. C. Kraft, Jr., J. P. Mayer, C. R. Huss, and R. P. Parten iii TABLES Table Page 1-I DEVELOPMENTANDQUALIFICATIONTESTS........... 3 1-II HISTORYOF ENVIRONMENTALACCEPTANCETEST FAILURES ............................. 1-III APOLLO FLIGHT ANOMALIES ................... 3-I LUNARMODULEACCEPTANCEVIBRATIONTEST IN 1967............................... 23 3-II COMMANDANDSERVICEMODULEACCEPTANCEVIBRATION TESTIN 1967 ........................... 24 3-III CRITERIAFORLUNAR MODULEQUALIFICATIONAND ACCEPTANCETHERMAL TESTINGIN 1967 .......... 25 7-I MANDATORYGUIDANCE,NAVIGATION,ANDCONTROL SYSTEMS (a) Lunar modulesystems .................... 62 (b) Commandandservice modulesystems ........... 63 8-I APOLLOSPACECRAFTFLIGHT HISTORY............. 72 iv FIGURES Figure Page 1-1 Vibration test level for acceptance ................... 4 1-2 Thermal test level for acceptance ................... 4 1-3 Results of vibration acceptance tests for 11 447 tests of 166 different components ...................... 1-4 Results of thermal acceptance tests for 3685 tests of 127 different components ....................... 1-5 Apollo 10 fuel-cell temperature oscillations as they originally appeared in flight .......................... 1-6 Disturbance of Apollo 10 fuel-cell temperature as it was identified in the laboratory ..................... 7 1-7 Buildup of Apollo mission capability .................. 9 2-1 Mission Control Center, Houston, Texas ............... 17 2-2 Service propulsion engine propellant valve and injector ........ 18 2-3 Command module hatch ......................... 19 3-1 Revised Apollo acceptance vibration test guidelines ......... 23 3-2 Revised Apollo acceptance thermal test guidelines .......... 25 3-3 Results of acceptance vibration tests for 11 447 tests of 166 different components ...................... 26 3-4 Results of acceptance thermal tests for 3685 tests of 127 different components ...................... 26 3-5 Installation of the acceptance-tested crew equipment in the Apollo command module at the NASA Manned Spacecraft Center ..... 27 4-1 Astronaut trains underwater in simulated zero-g condition in water-immersion facility. Astronaut wears weights on shoulders, wrists, and ankles. Total ballast is about 180 pounds ....... 32 4-2 Lunar landing training vehicle trains crews for last 500 feet of altitude in critical moon landing phase ............... 33 V Figure Page 4-3 Lunar module mockup installed in KC-135 aircraft. Support structure takes loads imposed in 2-I/2g pullup, after which zero g is achieved for 20 to 30 seconds on a parabolic flight path .................................. 33 4-4 Familiarization run on the mobile partial-gravity simulator used for lunar walk indoctrination .................... 34 4-5 Apollo 12 landing and ascent model of Surveyor and Snowman craters as seen from 1800 feet ................... 36 4-6 Command module procedures simulator and lunar module procedures simulator ........................ 36 4-7 Translation and docking trainer simulates lunar module active docking over lasti00 feetof separation distance .......... 37 4-8 Dynamics crew procedures simulator ................. 37 4-9 Simulated command module crew stationfor thedynamics crew procedures simulator ........................ 37 4-10 Lunar module mission simulator with crew stationand Farrand opticalsystems for three windows ................. 38 4-11 Visual opticsand instructorstationfor command module mission simulator ............................... 38 4-12 Apollo 12 landing and ascent visual simulation system ........ 38 5-1 Electricalpower display when Apollo 12 was at an altitudeof6000 feet ......................... 42 5-2 Mission-development time line ..................... 43 5-3 Mission Operations Control Room divisions .............. 44 5-4 Partial sample of CSM systems schematic .............. 45 5-5 Sample offlightmission rules ..................... 47 5-6 Sample of FlightControl Operations Handbook ............. 49 5-7 Sample of FlightController Console Handbook ............. 50 5-8 Sample ofprogramed-instruction text ................. 51 5-9 Logic offlightcontrol decisions .................... 52 vi Figure Page 6-1 Mission evaluation roomwith team leaders' table in theforeground anddiscussion ofa systemproblem in thebackground....... 54 6-2 Long-range photographyof adapterfailure during the Apollo 6mission .......................... 56 7-1 Stepsthe ground-basedflight controllers take if certain guidanceand control values exceedpremission limits for the LM during LM descentto the lunar surface .................. 65 Iterative mission-planning process .................. 69 74 Apollo mission designinstrumentation ................ vii
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