Encyclopedia Astronautica
RD-854



rd854.jpg
RD-854
Credit: via Dietrich Haeseler
Yuzhnoye N2O4/UDMH rocket engine. 75.5 kN. R-36orb (SS-X-10) orbital stage. Out of Production. Thrust vector control by 4 nozzles fed from gas generator. Isp=312s.

Application: R-36orb (SS-X-10) orbital stage.

Chambers: 1 + 4. Engine: 100 kg (220 lb). Chamber Pressure: 85.30 bar. Thrust to Weight Ratio: 76.99. Oxidizer to Fuel Ratio: 2.02.

Status: Out of Production.
Unfuelled mass: 100 kg (220 lb).
Height: 1.51 m (4.94 ft).
Diameter: 1.53 m (5.01 ft).
Thrust: 75.50 kN (16,973 lbf).
Specific impulse: 312 s.
Burn time: 70 s.
First Launch: 1962-67.

More... - Chronology...


Associated Countries
See also
Associated Launch Vehicles
  • R-36-O Ukrainian orbital missile. The R-36-O was the only orbiting military nuclear weapon ever deployed, although in order to remain legal under international treaties it was a 'fractional orbital' weapon. Although American infrared early warning satellites invalidated the 'surprise attack' component of the concept, 18 missiles were operational from 1969 to 1983. More...

Associated Manufacturers and Agencies
  • Yuzhnoye Ukrainian manufacturer of rockets, spacecraft, and rocket engines. Yangel Design Bureau, Dnepropetrovsk, Ukraine. More...

Associated Propellants
  • N2O4/UDMH Nitrogen tetroxide became the storable liquid propellant of choice from the late 1950's. Unsymmetrical Dimethylhydrazine ((CH3)2NNH2) became the storable liquid fuel of choice by the mid-1950's. Development of UDMH in the Soviet Union began in 1949. It is used in virtually all storable liquid rocket engines except for some orbital manoeuvring engines in the United States, where MMH has been preferred due to a slightly higher density and performance. More...

Bibliography
  • Shnyakin, V N, Shidkostnye Raketye Dvigateli - Opisanie i Osnovnye Tekhnicheskie Dannye, GKB Yuzhnoe "Yangel", Dnepropetrovsk 1996 via Dietrich Haeseler.

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