Encyclopedia Astronautica

N2O4/UDMH propellant rocket stage. Loaded/empty mass 122,300/6,400 kg. Thrust 2,651.70 kN. Vacuum specific impulse 301 seconds. Verniers 4 x RD-68M, 285 kN, maximum 42 degree gimbal angle.

Cost $ : 6.000 million.

Status: Retired 1975.
Gross mass: 122,300 kg (269,600 lb).
Unfuelled mass: 6,400 kg (14,100 lb).
Height: 18.90 m (62.00 ft).
Diameter: 3.00 m (9.80 ft).
Span: 3.00 m (9.80 ft).
Thrust: 2,651.70 kN (596,126 lbf).
Specific impulse: 301 s.
Specific impulse sea level: 269 s.
Burn time: 120 s.
Number: 157 .

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Associated Countries
Associated Engines
  • RD-251 Glushko N2O4/UDMH rocket engine. 2643 kN. R-36-0 stage 1, Tsyklon 2 stage 1. In production. Assembly of 3 RD-250-type units. Isp=301s. First flight 1965. More...

Associated Launch Vehicles
  • Tsiklon Ukrainian intercontinental ballistic missile. The R-36 ICBM was the largest ever built and the bogeyman of the Pentagon throughout the Cold War. Dubbed the 'city buster', the 308 silos built were constantly held up by the US Air Force as an awesome threat that justified a new round of American missile or anti-missile systems. On the other hand, the Americans were never motivated to build and deploy corresponding numbers of their equivalent, the liquid propellant Titan 2. Derivatives of the R-36 included the R-36-O orbital bombing system, the Tsiklon-2 and -3 medium orbital launch vehicles, and the replacement R-36M missiles. With the collapse of the Soviet Union, the design and manufacturing facility ended up in independent Ukraine. Accordingly the missile was finally retired in the 1990's, conveniently in accordance with arms reduction agreements with the Americans. More...
  • R-36 8K67 Ukrainian intercontinental ballistic missile. Initial ICBM version. More...
  • Tsiklon-2A Ukrainian orbital launch vehicle. Minimal modification of the R-36 ICBM used in replacement of Chelomei's cancelled UR-200 booster for initial launches of the IS ASAT and US naval radarsat. Development was authorized in late 1965 and first launch was made before the end of 1967. It flew only eight times before being replaced by the definitive Tsyklon-2 space launch vehicle. More...
  • R-36 8K67P Ukrainian intercontinental ballistic missile. The R-36P was a version of the R-36 which could deploy three separate (but not independently-targeted) warheads instead of one. The concept was to ensure a wider zone of destruction and overpressure then a single warhead detonation would create. 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...

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