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Proton 11S861

Stage · Russia

Original archive entry. The text, images and links below are kept as they were written.

LOx/Kerosene propellant rocket stage. Also known as Block DM-2 (different from commercial Block DM2 (no hyphen!)), article number 11S861. Commercial version designated Block DM1 and is equipped with Saab payload adapter for insertion of AS 4000 bus spacecraft into geosynchronous orbit. With improved guidance system as compared to 11S86, originally designed for insertion of military spacecraft into geosynchronous orbit. Used from 1982 to present.

Cost $ : 4.000 million.

Country
Russia
Engines
RD-58M, 11D79
Propellants
Lox/Kerosene