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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Alpha Draco ： ウィキペディア英語版 Alpha Draco The Alpha Draco missile, also known as Weapons System 199D (WS-199D), was an experimental ballistic missile developed by McDonnell Aircraft in the late 1950s to investigate boost-glide reentry. Three test flights were conducted in 1959, of which two were successful. ==Design and development== As part of the WS-199 project to develop new strategic weapons for the United States Air Force's Strategic Air Command, McDonnell Aircraft developed the Alpha Draco missile between 1957 and 1959. The purpose of the rocket was to establish whether a strategic missile using the "boost-glide" principle of propulsion could be practically used.〔Parsch 2005〕 The idea had been proposed by Walter Dornberger, who had moved to McDonnell after working for a short time at Bell Aircraft. Dornberger had originally worked on the idea as part of efforts to extend the range of the V2 missile late in WWII. The Alpha Draco missile was a two-stage vehicle, the first stage comprising a Thiokol TX-20 solid-fuel rocket of the type used in the MGM-29 Sergeant theatre ballistic missile, and the second stage using a Thiokol TX-30 solid-fuel rocket. The payload vehicle was aerodynamically shaped, using the lifting body principle to provide aerodynamic lift;〔 following burnout of the first stage, the vehicle would coast for a short time before ignition of the second stage,〔 burnout of the second stage was followed by the vehicle entering the glide phase of flight, which would be terminated by a dive upon the target.〔Yengst 2010, pp.38-39.〕 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「Alpha Draco」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.