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Nautilus-X (Non-Atmospheric Universal Transport Intended for Lengthy United States Exploration) is a multi-mission space exploration vehicle concept developed by engineers Mark Holderman and Edward Henderson of the Technology Applications Assessment Team of NASA. The concept was first proposed in January, 2011 for long duration (one to twenty-four months) exo-atmospheric space journeys for a six-person crew. In order to limit the effects of microgravity on human health, the spacecraft would be equipped with a centrifuge. The design was intended to be relatively inexpensive by manned spaceflight standards as it was projected to only cost US$3.7 billion. In addition, it was suggested that it might only need 64 months of work.〔〔 〕 == Objectives == The original goal of Nautilus-X was to be a stopover to long term missions for the Moon or Mars. To ease route planning of the whole mission, the station would be placed at the Lagrange point L1 or L2 of the Moon or Mars, depending on which location is to be visited. It would also have served in case of emergency station and hospital for current mission crews.〔 Other objectives included: * Self-sustained for long-duration missions with crews as large as 6 * Support manned landing missions * Satisfy requirements of NASA Authorization Act of 2010 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「Nautilus-X」の詳細全文を読む スポンサード リンク
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