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|family = R-7/Soyuz/2 |comparable = Long March 2C PSLV |status = Active |sites = Baikonur Sites 1/5 & 31/6 Plesetsk Site 43 Vostochny |launches = 1 |success = 1 |first = 28 December 2013 }} The Soyuz-2-1v ((ロシア語:Союз 2.1в), ''Union 2.1v''), GRAU index 14A15, known earlier in development as the Soyuz-1 ((ロシア語:Союз 1), ''Union 1''), is a Russian expendable carrier rocket. It was derived from the Soyuz-2.1b, and is a member of the R-7 family of rockets. It is built by TsSKB Progress, at Samara in the Russian Federation. Launches are conducted from existing facilities at the Plesetsk Cosmodrome in Northwest Russia, with pads also available at the Baikonur Cosmodrome in Kazakhstan,〔(【引用サイトリンク】title="Soyuz-1" middle class launch vehicle )〕 and new facilities at the Vostochny Cosmodrome in Eastern Russia. ==Vehicle== The Soyuz-2-1v represents a major departure from earlier Soyuz rockets. Unlike the Soyuz-2-1b upon which it is based, it omits the four boosters used on all other R-7 vehicles. The first stage of the Soyuz-2-1v is a heavily modified derivative of the Soyuz-2 first stage, with a single-chamber NK-33 engine replacing the four-chamber RD-117 used on previous rockets along with structural modifications to the stage and lower tanking. Since the NK-33 is fixed, the RD-0110R engine is used to supply thrust vector control. It also supplies an extra 〔 of thrust and heats the pressurization gasses. The NK-33 engine, originally built for the N1 programme, offers increased performance over the RD-117; however, only a limited number of engines are available. Once the supply is exhausted, the NK-33 will be replaced by the RD-193. In April 2013, it was announced that the RD-193 engine had completed testing. The RD-193 is a lighter and shorter engine based on the Angara's RD-191, which is itself a derivative of the Zenit's RD-170. The second stage of the Soyuz-2-1v is the same as the third stage of the Soyuz-2-1b; powered by an RD-0124 engine. For most missions a Volga upper stage will be used to manoeuvre the payload from an initial parking orbit to its final destination. The Volga is derived from the propulsion system of the Yantar reconnaissance satellite, and was developed as a lighter and cheaper alternative to the Fregat. The Soyuz-2-1v was designed as a light-class carrier rocket, and has a payload capacity of to a circular low Earth orbit with an inclination of 56.8° from Baikonur, and to a 200 kilometre orbit at 62.8° from Plesetsk.〔 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「Soyuz-2-1v」の詳細全文を読む スポンサード リンク
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