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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 HGM-25A Titan I ： ウィキペディア英語版 HGM-25A Titan I The Martin Marietta SM-68A/HGM-25A Titan I was the United States' first multistage rocket Intercontinental ballistic missile (ICBM), in use from 1959 until 1965. Incorporating the latest design technology when designed and manufactured, the Titan I provided an additional nuclear deterrent to complement the U.S. Air Force's SM-65 Atlas missile. It was the first in a series of Titan rockets, but was unique among them in that it used liquid oxygen and RP-1 as propellants, while the later Titan ICBM versions all used storeable fuels instead. Though the SM-68A was operational for only three years, it was an important step in building the Air Force's strategic nuclear forces. ==Origins== The program began in January 1955 and took shape in parallel with the Atlas (SM-65/HGM-16) intercontinental ballistic missile (ICBM). The Air Force's goal in launching the Titan program was twofold: one, to serve as a backup should Atlas fail; and two, to develop a large, two-stage missile with a longer range and bigger payload that also could serve as a booster for space flights. The Titan I was initially designated SM-68; it was later redesignated HGM-25A. 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「HGM-25A Titan I」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.