. Bell telephone magazine . the ApolloProgram. It is an inch-thick summary 49 BELLCOMM listing every major piece of hardwareand what it is required to do. The sjjeci-fication is approved by the Apollo pro-gram director. Apollo Mission Sequence Plan. Thissystems engineering working document isa step-by-step account of the lunar mis-sion identifying what is happening ateach step during the entire mission period. Quarterly Weight and PerformanceReport. This summarizes the weight andperformance capability of the Apollo/Saturn space vehicles. Natural Environment and PhysicalStandards for the Apollo


. Bell telephone magazine . the ApolloProgram. It is an inch-thick summary 49 BELLCOMM listing every major piece of hardwareand what it is required to do. The sjjeci-fication is approved by the Apollo pro-gram director. Apollo Mission Sequence Plan. Thissystems engineering working document isa step-by-step account of the lunar mis-sion identifying what is happening ateach step during the entire mission period. Quarterly Weight and PerformanceReport. This summarizes the weight andperformance capability of the Apollo/Saturn space vehicles. Natural Environment and PhysicalStandards for the Apollo Program. Thiscontains the approved set of values forthe environmental conditions, both terres-trial and lunar, applicable to the Apollomission. It also establishes a set of astro-dynamic constants and geodetic and sel-enographic reference systems. The docu-ment is in effect an encyclopedia of defi-nitions and numbers which all workingon Apollo can use. Project Apollo Coordinate SystemsStandards. Here are recorded Remote terminal is used by Beilcomm peopleat NASA Headquarters to converse withdigital computer at Beilcomm Headquarters. vehicle, geodetic, guidance and naviga-tion coordinate system standards for theApollo Program. It is a very thin, butvery important manual which sets forthuniform standards for the many peopleworking on the project. TheTop of a Tree Quite obviously, the information inthese documents is not generated over-night. It is the product of years of efifortby the entire program structure, techni-cal studies by Beilcomm and other ele-ments of the Apollo Program Office, thethree field centers and their strong arrayof contractors. The majority of the in-formation originates in the last twogroups. The development of this in-formation is also an evolutionary processin which the ultimate goal is to achievecompleteness and accuracy. One recog-nizes, then, that in most cases thesedocuments are simply the top of a series,or tree. For example, the Apollo P


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