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R-7 rocket : ウィキペディア英語版
R-7 Semyorka

The R-7 () was a Soviet missile developed during the Cold War, and the world's first intercontinental ballistic missile. The R-7 made 28 launches between 1957 and 1961, but was never deployed operationally. A derivative, the R-7A, was deployed from 1959 to 1968. To the West it was known by the NATO reporting name SS-6 Sapwood and within the Soviet Union by the GRAU index 8K71. In modified form, it launched Sputnik 1, the first artificial satellite, into orbit, and became the basis for the R7 family which includes Sputnik, Luna, Molniya, Vostok, and Voskhod space launchers, as well as later Soyuz variants.
The widely used nickname for the R-7 launcher, "semyorka", means "the 7" in Russian.
==Description==
The R-7 was long, in diameter and weighed ; it had two stages, powered by rocket engines using liquid oxygen (LOX) and kerosene and capable of delivering its payload up to , with an accuracy (CEP) of around . A single thermonuclear warhead was carried with a nominal yield of 3 megatons of TNT. The initial launch was boosted by four strap-on liquid rocket boosters making up the first stage, with a central 'sustainer' motor powering through both the first and the second stage. Each strap-on booster included two vernier thrusters and the core stage included four.〔(【引用サイトリンク】title=Rocket R-7 )〕 The guidance system was inertial with radio control of the vernier thrusters.

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「R-7 Semyorka」の詳細全文を読む



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