S1.5400

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S1.5400

Block L rocket stage
Block L Molniya 8K78M
Credit: © Mark Wade

Korolev LOx/Kerosene rocket engine family. Designed by Korolev; passed to Isayev for production. Began a series of engines leading through the 8D726 for GR-1 to the Block D for the N1 and Proton.

Subtopics

Molniya 8K78-3 LOx/Kerosene propellant rocket stage. Stage designed as fourth stage to take R-7 launched payloads into deep space. Adapted from the Luna / Vostok third stage, but with restart capability. The 700 kg BOZ ullage motors and stabilization platform jettisoned prior to main stage burn. Original version.

Blok SO-L LOx/Kerosene rocket stage. 66.70 kN (14,995 lbf) thrust. Mass 6,200 kg (13,669 lb).

Country: Russia. Propellants: Lox/Kerosene. Agency: Korolev bureau.

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