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Block L

Stage

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

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.