Encyclopedia Astronautica
LOK Energia PAO


Russian manned spacecraft module. Study 1988. The LOK provided a pressurized volume for three crew. Within the cabin was a descent module of the same configuration as Soyuz, but almost 50% larger. Equipment-engine section - Lunar orbit maneuver, trans-orbit propulsion, pressurized crew quarters..

This would separate just prior to reentry in the earth's atmosphere. Forward was a universal docking system.

AKA: Priborno-agregatniy otsek.
Gross mass: 23,200 kg (51,100 lb).
Unfuelled mass: 6,100 kg (13,400 lb).
Height: 3.50 m (11.40 ft).
Diameter: 4.10 m (13.40 ft).

More... - Chronology...


Associated Countries
Associated Spacecraft
  • LOK Energia Russian manned lunar orbiter. Study 1988. Lunar orbiter for Energia-launched lunar expedition. The LOK and LK lander would be inserted into lunar orbit by separate Energia launches. More...

See also
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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