Encyclopedia Astronautica
Vostok 8A92M-0


Lox/Kerosene propellant rocket stage. Loaded/empty mass 43,300/3,700 kg. Thrust 995.30 kN. Vacuum specific impulse 313 seconds.

Cost $ : 5.000 million.

Status: Retired 1991.
Gross mass: 43,300 kg (95,400 lb).
Unfuelled mass: 3,700 kg (8,100 lb).
Height: 19.00 m (62.00 ft).
Diameter: 2.68 m (8.79 ft).
Span: 2.68 m (8.79 ft).
Thrust: 995.30 kN (223,752 lbf).
Specific impulse: 313 s.
Specific impulse sea level: 256 s.
Burn time: 120 s.
Number: 380 .

More... - Chronology...


Associated Countries
Associated Engines
  • RD-107-8D74K Glushko Lox/Kerosene rocket engine. 996 kN. Developed in 1957-1960. Used in strap-ons for Molniya 8K78, R-7A 8K74, Voskhod 11A57, Vostok 8A92, Vostok 8A92M. Isp=313s. Fuel T-1 or RG-1 kerosene. First flight 1959. More...

Associated Launch Vehicles
  • Vostok 8A92M Russian orbital launch vehicle. Second generation space systems required injection of lighter but higher-altitude Meteor and other satellite payloads into sun-synchronous orbits. The 8A92M version was developed for this purpose. First use was the Meteor launch on 29 June 1977. More...

Associated Propellants
  • Lox/Kerosene Liquid oxygen was the earliest, cheapest, safest, and eventually the preferred oxidiser for large space launchers. Its main drawback is that it is moderately cryogenic, and therefore not suitable for military uses where storage of the fuelled missile and quick launch are required. In January 1953 Rocketdyne commenced the REAP program to develop a number of improvements to the engines being developed for the Navaho and Atlas missiles. Among these was development of a special grade of kerosene suitable for rocket engines. Prior to that any number of rocket propellants derived from petroleum had been used. Goddard had begun with gasoline, and there were experimental engines powered by kerosene, diesel oil, paint thinner, or jet fuel kerosene JP-4 or JP-5. The wide variance in physical properties among fuels of the same class led to the identification of narrow-range petroleum fractions, embodied in 1954 in the standard US kerosene rocket fuel RP-1, covered by Military Specification MIL-R-25576. In Russia, similar specifications were developed for kerosene under the specifications T-1 and RG-1. The Russians also developed a compound of unknown formulation in the 1980's known as 'Sintin', or synthetic kerosene. More...

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