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Martin Marietta Spacemaster
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Martin Marietta Spacemaster : ウィキペディア英語版
Martin Marietta Spacemaster

The Martin Marietta Spacemaster was a proposed configuration for what became the Space Shuttle, which featured an X-24-derived orbiter, and an unusual “catamaran style” booster stage. During launch and ascent, the orbiter would be located in a recess in the booster. The booster's 14 engines would be located in clusters of seven, at the bottom of both halves of the booster. Unlike the final design for the Space Shuttle, the Spacemaster would lack an external tank, and the boosters would be joined, by means of connecting struts which would also serve as the mounting for the orbiter.
The concept was evaluated in 1967, but was rejected. Martin Marietta went on to produce the Space Shuttle external tank (ET) for the final STS Space Shuttle design (by Lockheed Martin after a merger with Lockheed).
==See also==

*List of space launch system designs

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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