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Engine Model: YaRD OKB-670. Designer: Bondaryuk. Developed in: 1958-. Application: nuclear launcher. Propellants: Nuclear/Ammonia+Alcohol. Thrust(vac): 1,667.000 kN (374,756 lbf). Isp: 470 sec. Isp (sea level): 430 sec. Burn time: 500 sec. Chambers: 1. Country: Russia. Status: Development ended 1960.

Korolev began work on 3 nuclear launchers on 30 June 1958. Competing engine design was by Glushko. Used nuclear reactor in cylindrical housings, operating at 3000 deg K. Propellant was heated in the reactor and exhausted through four expansion nozzles.

YaRD OKB-670 used on Rocket Stages
Bibliography:

  • Semenov, Yuri P Editor, Raketno-kosmicheskaya korporatsiya 'Energia' imeni S P Koroleva, Moscow, Russia, 1996.
  • Semenov, Yu. P., S P Korolev Space Corporation Energia, RKK Energia, 1994.
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