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The RD-0216 and RD-0217 are liquid rocket engines, burning N2O4 and UDMH in the oxidizer rich staged combustion cycle.〔〔 The only difference between the RD-0216 and the RD-0217 is that the latter has a heat exchanger to heat the pressuring gasses for the tanks.〔 Three RD-0216 and one RD-0217 were used on the first stage of the UR-100 ICBM.〔 The engines were manufactured until 1974 and stayed in operational use until 1991. More than 1100 engines were produced.〔 For the UR-100N project, while first stage propulsion was based on the more powerful RD-0233 engine. The second stage used a variation of the RD-0217 called the RD-0235 (GRAU Index 15D113).〔 It used a vacuum optimized nozzle extension, and thus had an extra 10s of isp and 〔 of more thrust. It has a fixed nozzle and relies on the RD-0236 vernier engine for thrust vectoring. While the engine has been out of production for a while, the UR-100NU and the Rokot and Strela use it as of 2015.〔 ==See also== *UR-100 *UR-100N *Rokot *Strela *Rocket engine using liquid fuel 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「RD-0216」の詳細全文を読む スポンサード リンク
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