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Proton 17S40
Part of Block D Family
LOx/Kerosene propellant rocket stage. Also known as Block DM-5. Commercial version is Block DM2, with Iridium dispenser, designed for insertion of multiple LM 700 (Iridium) spacecraft into medium earth orbit. With guidance unit, modification of 11S861 stage for heavier payloads and with different payload adapter.

AKA: Block DM;D-1-e. Status: Active. Thrust: 85.02 kN (19,113 lbf). Gross mass: 14,600 kg (32,100 lb). Unfuelled mass: 3,300 kg (7,200 lb). Specific impulse: 352 s. Burn time: 450 s. Height: 7.10 m (23.20 ft). Diameter: 3.70 m (12.10 ft). Span: 3.70 m (12.10 ft).

Cost $ : 4.000 million.



Family: Space Tugs. Country: Russia. Engines: RD-58M, 11D79. Launch Vehicles: Proton-K/17S40 DM2. Propellants: Lox/Kerosene.

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