Encyclopedia Astronautica
Perimetr Stage 1


N2O4/UDMH rocket stage. 1236.00 kN (277,864 lbf) thrust. Mass 59,000 kg (130,073 lb).

Status: Retired 1988.
Gross mass: 59,000 kg (130,000 lb).
Unfuelled mass: 5,000 kg (11,000 lb).
Height: 14.90 m (48.80 ft).
Diameter: 2.25 m (7.38 ft).
Thrust: 1,236.00 kN (277,863 lbf).
Number: 11 .

More... - Chronology...


Associated Countries
Associated Engines
  • RD-268 Glushko N2O4/UDMH rocket engine. 1236 kN. MR-UR-100 / RS-16 (SS-17) stage 1. Out of Production. First flight 1976. Modification of RD-263 engine. Isp=319s. First flight 1990. More...

Associated Launch Vehicles
  • Perimetr 15A11 Ukrainian strategic communications missile. Perimetr was developed for launch of a highly secret communications payload. This would be be put in orbit or on a long high-altitude trajectory to provide back-up command and control of the strategic forces in the event of nuclear war. 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...

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