Proton 11S861-01

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Proton 11S861-01

Part of Block D

LOx/Kerosene propellant rocket stage. Also known as Block DM-2M, article number 11S861-01. Commercial versions are Block DM3, with Saab payload dispenser, for insertion of Hughes HS 601 bus spacecraft into geosynchronous orbit; and Block DM4, for insertion of FS-1300 bus spacecraft into geosynchronous orbit. With guidance unit, originally designed for insertion of military spacecraft into geosynchronous orbit. Capable of boosting heavier payloads than 11S861 through use of higher-performance 'Sintin' synthetic kerosene fuel.

AKA: Block DM;D-1-e. Status: Active. Thrust: 83.45 kN (18,760 lbf). Gross mass: 18,650 kg (41,110 lb). Unfuelled mass: 2,650 kg (5,840 lb). Specific impulse: 361 s. Burn time: 680 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-58S, 11D79. Launch Vehicles: Proton-K/DM-2M, Proton-K/DM-2M DM4. Propellants: Lox/Kerosene.

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