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. Status: Study 1988. 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).