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Tier One was a Scaled Composites' 1990s–2004 program of suborbital human spaceflight using the reusable spacecraft SpaceShipOne and its launcher White Knight. The craft was designed by Burt Rutan, and the project was funded 20 million US Dollars by Paul Allen. In 2004 it made the first privately funded human spaceflight and won the 10 million US Dollars Ansari X Prize for the first non-governmental reusable manned spacecraft. The objective of the project was to develop technology for low-cost routine access to space. SpaceShipOne was not itself intended to carry paying passengers, but was envisioned that there would be commercial spinoffs, initially in space tourism. The company Mojave Aerospace Ventures was formed to manage commercial exploitation of the technology. A deal with Virgin Galactic could see routine space tourism in the late 2010s using a spacecraft based on Tier One technology. ==Design== The design concept of Tier One was to air launch a three-person piloted spacecraft which climbs to slightly above altitude using a hybrid rocket motor and then glides to the ground and lands horizontally. Scaled Composites lists the following components of the program: *launch aircraft (White Knight) *three-seater human-rated spacecraft (SpaceShipOne) *hybrid rocket propulsion system *mobile propulsion test facility *flight simulator *inertial-nav flight director *mobile mission control center *spacecraft systems *pilot training program *flight test program 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「Scaled Composites Tier One」の詳細全文を読む スポンサード リンク
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