Encyclopedia Astronautica
KRD-442


Isayev N2O4/UDMH rocket engine. 4.38 / 0.17 kN. Orbital propulsion for FGB-derived modules for Mir and ISS. In Production. Main and low-thrust mode. Operation of turbopump without chamber used to pump propellants into tanks from Progress tankers.

Application: Orbital propulsion engine for Kvant, Kvant-2, Kristall, Spektr, Priroda, FGB.

Engine: 52 kg (114 lb). Thrust to Weight Ratio: 8.59.

AKA: 11D442.
Status: In Production.
Unfuelled mass: 52 kg (114 lb).
Height: 0.73 m (2.39 ft).
Diameter: 0.46 m (1.50 ft).
Thrust: 4.38 kN (985 lbf).
First Launch: 1972-77.

More... - Chronology...


Associated Countries
Associated Spacecraft
  • Kvant Russian manned space station. One launch, 1987.03.31 (Kvant 1). The Kvant spacecraft represented the first use of a new kind of Soviet space station module, designated 37K. More...
  • Kvant-2 Russian manned space station. One launch, 1989.11.26, Kvant 2. Kvant-2 was a utility module launched to the Mir station. It provided an airlock, additional electric power, and additional gyrodynes for orienting the station. More...
  • Teknologia Russian materials science satellite. Study 1990. In 1990 KB Salyut proposed an unmanned derivative of the TKS to conduct zero-gravity materials production experiments. More...
  • Tellura Russian earth land resources satellite. Study 1990. In 1990 KB Salyut proposed an unmanned derivative of the TKS manned ferry to conduct earth resources experiments. More...
  • Skif-DM Russian materials science satellite. Cancelled 1992. In 1990 KB Salyut proposed using the back-up of the Polyus 'star wars' test bed as a huge zero-gravity materials production facility. More...
  • Spektr Russian manned space station. One launch, 1995.05.20. Spektr was a module of the Mir space station. It began life as a dedicated military research unit. More...
  • Priroda Russian manned space station. One launch, 1996.04.23. Priroda was the last Mir module launched. It was originally an all-Soviet remote sensing module for combined civilian and military surveillance of the earth. More...

See also
Associated Manufacturers and Agencies
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
  • Golubev, A A, KB KhimAvtomatiki - Straniy Istorii, Vol. 1, Voronezh 1995 via Dietrich Haeseler.
  • Haeseler, Dietrich, Visit to the museum of Chemical Machining Design Bureau, Kalinin 1994 via Dietrich Haeseler.
  • Russian Arms Catalogue, Vol 5 and 6, Military Parade, Moscow via Dietrich Haeseler.
  • Siddiqi, Asif A, Soviet Space Web Page, 1999 via Dietrich Haeseler. Web Address when accessed: here.

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