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1966, "Program OV2 - Orbital Requirements Document for Spacecraft OV2-5" (Aerospace Corp., 81pp., ca

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1966,  Program OV2 - Orbital Requirements Document for Spacecraft OV2-5  (Aerospace Corp., 81pp., ca
1966, "Program OV2 - Orbital Requirements Document for Spacecraft OV2-5" (Aerospace Corp., 81pp., card) "This ORD defines the requirements for orbital support of the OV2-5 spacecraft of Program OV2-5. It is published to provide supporting agencies with a basis to plan and implement necessary equipment and resources to meet specified program requirements...". The purpose of OV2-5 spacecraft is to obtain space environmental data in an earth equatorial belt at approximately 5.6 earth radii (synchonous orbit altitude) concerning cosmic ray and trapped particle fluxes and changes in these fluxes arising from solar and geomagnetic disturbance ...". Well illustrated and technically proficient. Ex: the Milton Weiss Estate collection.