Encyclopedia Astronautica

Kosberg N2O4/UDMH rocket engine. R-36M / RS-20A (SS-18 mod-1) stage 2. Out of Production. Main engine. Staged combustion cycle. Used on Ikar launch vehicle. First flight 1974.

Application: R-36M / RS-20A (SS-18 mod-1) stage 2.

Status: Out of Production.
First Launch: 1967-75.

More... - Chronology...

Associated Countries
See also
Associated Launch Vehicles
  • R-36M Ukrainian intercontinental ballistic missile. The R-36M replaced the R-36 in 288 existing silos and was additionally installed in 20 new super-hardened silos. More...
  • Ikar Ukrainian intercontinental ballistic missile. Ikar was Yuzhnoye's design for a heavy ICBM, a next-generation replacement for the R-36M2. Design was begun at the beginning of the 1990's under Stanislav Us. It may have used all-solid propellants, and nested rocket stages. Work was quickly dropped after the dissolution of the Soviet Union. More...

Associated Manufacturers and Agencies
  • Kosberg Russian manufacturer of rocket engines. Kosberg Design Bureau, Russia. 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...

  • Haeseler, Dietrich, "Personal communication", 1998 December..
  • Polovnikov S P; Karpov, A S, "Projekt 'Vozdushnyy Start'", Vestnik Aviatsii i Kosmonavtiki, Moscow, 1-2/98 via Dietrich Haeseler.

Associated Stages
  • R-36M-2 N2O4/UDMH rocket stage. 760.00 kN (170,855 lbf) thrust. Mass 49,000 kg (108,027 lb). More...

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