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The Hitchhiker Program (HH) was a NASA program established in 1984 and administered by the Goddard Space Flight Center (GSFC) and the Marshall Space Flight Center (MSFC). The program was designed to allow low-cost and quick reactive experiments to be placed on board the Space Shuttle. The program was discontinued after the failure of STS-107. ==Program history== NASA's ''Hitchhiker'' project began in early 1984. It was created to accommodate small attached payloads in the space shuttle payload bay. ''Hitchhikers'' were intended for customers whose space activity requires power, data or command services. The first ''Hitchhiker'' launched on STS-61-C on January 12, 1986. Called HHG-1, it was mounted to the side of the payload bay and carried three experiments. The second ''Hitchhiker'' launched on STS-39 on April 28, 1991. This payload was called Space Test Payload (STP)-1 and consisted of five experiments mounted onto a cross-bay carrier. Between 1992 and 1995, 12 ''Hitchhikers'' were manifested to fly on the space shuttle. The ''Hitchhiker'' system provided real-time communications between the payload and customers in the ''Hitchhiker'' control center at Goddard Space Flight Center, Greenbelt, Maryland. The system also provided crew control/display capability, if necessary. ''Hitchhikers'' were created to provide a quick reaction and low cost capability for flying small payloads in the shuttle payload bay. Along with NASA's Get Away Specials (GAS), ''Hitchhiker'' was developed and operated by the Goddard Space Flight Center Shuttle Small Payloads Project (SSPP). Unlike ''Hitchhikers'', GAS payloads were only mounted in canisters, did not connect to orbiter electrical services and did not require significant shuttle support. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Hitchhiker Program」の詳細全文を読む スポンサード リンク
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