翻訳と辞書
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・ Boeing strike of 1948
・ Boeing T-43
・ Boeing T50
・ Boeing T60
・ Boeing TB
・ Boeing Technical Fellowship
・ Boeing UK
・ Boeing Uninterruptible Autopilot
・ Boeing VC-25
・ Boeing Vertol CH-46 Sea Knight
・ Boeing Vertol XCH-62
・ Boeing Vertol YUH-61
・ Boeing WC-135 Constant Phoenix
・ Boeing X-20 Dyna-Soar
・ Boeing X-32
Boeing X-37
・ Boeing X-40
・ Boeing X-45
・ Boeing X-46
・ Boeing X-48
・ Boeing X-50 Dragonfly
・ Boeing X-51
・ Boeing X-53 Active Aeroelastic Wing
・ Boeing XAT-15
・ Boeing XB-15
・ Boeing XB-38 Flying Fortress
・ Boeing XB-39 Superfortress
・ Boeing XB-55
・ Boeing XB-56
・ Boeing XB-59


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Boeing X-37 : ウィキペディア英語版
Boeing X-37

The Boeing X-37, also known as the Orbital Test Vehicle (OTV), is a reusable unmanned spacecraft. It is boosted into space by a launch vehicle, then re-enters Earth's atmosphere and lands as a spaceplane. The X-37 is operated by the United States Air Force for orbital spaceflight missions intended to demonstrate reusable space technologies.〔 It is a 120%-scaled derivative of the earlier Boeing X-40.
The X-37 began as a NASA project in 1999, before being transferred to the U.S. Department of Defense in 2004. It conducted its first flight as a drop test on 7 April 2006, at Edwards Air Force Base, California. The spaceplane's first orbital mission, USA-212, was launched on 22 April 2010 using an Atlas V rocket. Its successful return to Earth on 3 December 2010 was the first test of the vehicle's heat shield and hypersonic aerodynamic handling. A second X-37 was launched on 5 March 2011, with the mission designation USA-226; it returned to Earth on 16 June 2012. A third X-37 mission, USA-240, launched on 11 December 2012 and landed at Vandenberg AFB on 17 October 2014. The fourth X-37 mission, USA-261, launched on 20 May 2015 and is in progress.
==Development==


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