Encyclopedia Astronautica

Rocket stage used on UR-700 launch vehicle.

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Associated Engines
  • RO-31 Kosberg nuclear/lh2 rocket engine. 392 kN. UR-700 Third Stage. Study 1967. Engine proposed for UR-700 third stage to achieve 250 tonne payload to low earth orbit. Probably closely related to RD-0411. More...

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