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|status = Active |sites = Baikonur 175/1 (inactive) Plesetsk 133/3 |first= 20 November 1990 26 December 1994 (orbital) |last= |launches = 27 |success = 25 |fail = 2 |stagedata = }} The Rokot ((ロシア語:Рокот) meaning ''Rumble''), also transliterated Rockot, is a Russian space launch vehicle that can launch a payload of 1,950 kilograms into a 200 kilometre high Earth orbit with 63° inclination. It is a derivative of the UR-100N (SS-19 Stiletto) intercontinental ballistic missile (ICBM), supplied and operated by Eurockot Launch Services. The first launches started in the 1990s from Baikonur Cosmodrome out of a silo. Later commercial launches commenced from Plesetsk Cosmodrome using a launch ramp specially rebuilt from one for the Kosmos-3M rocket. The cost of the launcher itself was about 15 million in 1999;〔(【引用サイトリンク】title=Rokot )〕 Eurockot last contract with ESA for launching Swarm in September 2013 is worth of million ($36 million). ==Specifications== Rokot's total mass is 107 tonnes, its length 29 metres and its maximum diameter 2.5 metres. The liquid-fueled rocket comprises three stages. The lower two are based on the Soviet UR-100N ICBM; the first stage uses an RD-244 engine, while the second stage uses an RD-235. The third stage is a Briz-KM ((ロシア語:Бриз-КМ) meaning ''Breeze-KM''), which has a mass of about 6 tonnes when fuelled, and is capable of flying for 7 hours and reigniting its engine six times during flight, allowing different satellites to be placed into different orbits. All stages use UDMH (unsymmetrical Dimethylhydrazine) as fuel and dinitrogen tetroxide as oxidiser. The Strela is a similar rocket, also based on the SS-19.〔 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「rokot」の詳細全文を読む スポンサード リンク
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