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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 Hydyne ： ウィキペディア英語版 Hydyne Hydyne is a mixture of 60% unsymmetrical dimethylhydrazine (UDMH) and 40% diethylenetriamine (DETA), developed in 1957 at Rocketdyne for use in liquid-fuel rockets.〔Morgan, George. It was created by Mary Sherman Morgan. (America's First Lady of Rocketry ), Caltech News, California Institute of Technology, Vol.42, No.1.〕〔〔 Hydyne was used as the fuel for the first stage of the Juno I rocket that launched Explorer 1, the first successful satellite launch conducted by the United States. == Improved performance == Mary Sherman Morgan, a chemical engineer at Rocketdyne's propulsion research thermodynamics unit and a leader in the development of Hydyne, first started work on the new compound early in 1956. The problem faced by Morgan and the company's chemical engineers was to replace the PGM-11 Redstone fuel (including 25% water and 75% ethyl alcohol) with a compound that would boost the rocket's performance enough to launch a small satellite into orbit. . The Jupiter-C and Juno I rockets used the same first-stage engines as the missile, but needed more thrust due to the increased size of the payload/warhead. With the use of the newly developed Hydyne, composed of a blend of 60% unsymmetrical dimethylhydrazine (UDMH) and 40% diethylenetriamine (DETA),〔NASA. (The Mercury-Redstone Project ), p. 2-2.〕 the Jupiter-C and Juno I engines gained a 12% increase thrust and higher specific impulse. The resulting fuel was not only more powerful fuel than alcohol, but also more toxic.〔NASA. (The Mercury-Redstone Project ), p. 3-2, 4-42.〕 The first Hydyne-powered Redstone R&D flight took place on November 29, 1956.〔(History of the Redstone Missile System ), p. 60〕 After the three Jupiter C and six Juno I launches〔''History of the Redstone Missile System'', p. 166〕 including the launch of America's first satellite, Explorer I), Hydyne was discontinued in favor of higher performing fuels. 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「Hydyne」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.