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Engine Model: RO-31. Designer: Kosberg. Application: UR-700 Third Stage. Propellants: Nuclear/LH2. Thrust(vac): 392.000 kN (88,125 lbf). Chambers: 1. Country: Russia. Status: Study 1967.

Engine proposed for UR-700 third stage to achieve 250 tonne payload to low earth orbit. Probably closely related to RD-0411.

Bibliography:

  • Yeteyev, Ivan, Operezhaya vremya, Ocherki, Moscow, 1999..
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