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 "Cosmos-2M" Space Booster.
(Industry designation 63CM/11K63, Western designation SL-7).
The booster is a modification of "Cosmos-2" space booster. Developed by General Design Bureau #586 for increasing payload. Manufacture was at the same place as Space Booster "Cosmos-2".
Base distinction of these two boosters is - increased size of propellant tanks for second stage. First Test launch of the booster was conducted October 19th, 1965. All together until 1977 year there were 123 launches, including 8 accidents.
Specification.
Launch weight.....................................................55,000 kg
Thrust.................................................................64,800 kg
Length.......................................................................32 m
Diameter.................................................................1.65 m
Payload weight
Low Earth Orbit........................................................450 kg
Propellant
First stage..............................................................CH+NO
Second stage.....................................................UDMH+O2
Stage 1....................................................... engine RD-214
Stage 2....................................................... engine RD-119
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