Encyclopedia Astronautica
UR-700 / RO-31

UR-700 Profile
UR-700 Launch Profile. At lift-off, nine engines - six on the six outer stage 1 modules, and three on the three core modules - fired. During the stage 1 burn, the three engines of the core modules were fed by propellants in forward tanks of the outer six modules. Therefore the Stage 2 core burn started with full tanks in the core modules. Stage 3, a modification of the Proton first stage, placed the 151 tonne LK-700 spacecraft into a 200 km earth parking orbit.
Credit: © Mark Wade
Russian heavy-lift orbital launch vehicle. UR-700 with high energy upper stage consisting of 7 x RO-31 Nuclear A engines using LH2+Methane propellants with a total thrust of 280 tonnes. Usable third stage propellant 196 tonnes, payload increased to 230 to 250 tonnes

LEO Payload: 270,000 kg (590,000 lb) to a 200 km orbit at 51.00 degrees.

Status: Design 1968.
Gross mass: 4,823,000 kg (10,632,000 lb).
Payload: 270,000 kg (590,000 lb).
Height: 76.00 m (249.00 ft).
Diameter: 17.60 m (57.70 ft).
Thrust: 56,500.00 kN (12,701,700 lbf).
Apogee: 200 km (120 mi).

More... - Chronology...

Associated Countries
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...

See also
  • UR-700 The UR-700 was the member of Vladimir Chelomei's Universal Rocket family designed in the 1960's to allow direct manned flight by the LK-700 spacecraft to the surface of the moon. Later versions, some of completely different configuration, were studied for manned Mars expeditions. More...

Associated Manufacturers and Agencies
  • Chelomei Russian manufacturer of rockets, spacecraft, and rocket engines. Chelomei Design Bureau, Reutov, Russia. More...

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