Block L

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Block L

R-7 upper stage, originally developed for the Luna and Vostok payloads. Derivatives later used for the GR-1 ICBM and the escape stage for the Molniya launch vehicle.

Subtopics

Luna 8K72-2 LOx/Kerosene propellant rocket stage. .

Vostok 8K72-2 LOx/Kerosene propellant rocket stage. .

N-11GR - V LOx/Kerosene propellant rocket stage. Orbital MIRV stage. Six of these stages clustered around Block B; each stage would have had a 1500 kg nuclear warhead.

Vostok 8K72K-2 LOx/Kerosene propellant rocket stage. .

GR-1 Stage 3 LOx/Kerosene propellant rocket stage. Masses estimated based on total vehicle mass of 117 metric tons. This stage was a close cousin of that developed for the Molniya launch vehicle.

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.

Vostok 8A92-2 LOx/Kerosene propellant rocket stage. .

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

Molniya M-3 LOx/Kerosene propellant rocket stage. .

Molniya 8K78M-3 LOx/Kerosene propellant rocket stage. Standardized improved version for Molniya-type communications satellite payloads.

Vostok 8A92M-2 LOx/Kerosene propellant rocket stage. .

Soyuz M-3 LOx/Kerosene propellant rocket stage. Empty mass estimated. Multiple restart engine.

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