Encyclopedia Astronautica
Sputnik 8K71PS-1


Lox/Kerosene propellant rocket stage. Loaded/empty mass 94,000/7,495 kg. Thrust 912.00 kN. Vacuum specific impulse 308 seconds.

Cost $ : 13.000 million.

Status: Retired 1957.
Gross mass: 94,000 kg (207,000 lb).
Unfuelled mass: 7,495 kg (16,523 lb).
Height: 28.00 m (91.00 ft).
Diameter: 2.99 m (9.80 ft).
Span: 2.99 m (9.80 ft).
Thrust: 912.00 kN (205,025 lbf).
Specific impulse: 308 s.
Specific impulse sea level: 241 s.
Burn time: 310 s.
Number: 2 .

More... - Chronology...


Associated Countries
Associated Engines
  • RD-108-8D75PS Glushko Lox/Kerosene rocket engine. 912 kN. Sputnik 8K71PS-1. Out of Production. Diameter is per chamber. Isp=308s. First flight 1957. More...

Associated Launch Vehicles
  • Sputnik 8K71PS Russian intercontinental ballistic orbital launch vehicle. Relatively unmodified R-7 ICBM test vehicles used to launch first two Sputniks. 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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