Russian manned spacecraft module. Study 1988. Descent stage similar in appearance to Apollo LM and LEK stages, but of differing dimensions. Descent from lunar orbit to lunar surface, launch platform for ascent stage..
AKA: Posadochnaya stuplen.
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Gross mass: 20,500 kg (45,100 lb).
Unfuelled mass: 6,000 kg (13,200 lb).
Height: 3.40 m (11.10 ft).
Diameter: 4.60 m (15.00 ft).
LK Energia Russian manned lunar lander. Study 1988. Lunar lander for Energia-launched lunar expedition. The LOK and LK lander would be inserted into lunar orbit by separate Energia launches. More...
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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