Encyclopedia Astronautica

Credit: KBKhA
Kosberg Lox/Kerosene rocket engine. Design concept 2007. Launch thrust 902.5 kN. Engine proposed to replace RD-107 in Onega and Avrora versions of the Soyuz launch vehicle.

The engine consists of two chambers, a fixed inner chamber and a gimbaled outer chamber. Chamber pressure in the fixed chamber, 180 kg/m2; in the gimbaled chamber, 160 kg/m2.

Application: Onega or Avrora (improved Soyuz) first stages.


Chambers: 2. Thrust (sl): 902.500 kN (202,890 lbf). Thrust (sl): 92,000 kgf. Engine: 1,150 kg (2,530 lb). Chamber Pressure: 176.00 bar.

Status: Design concept 2007.
Thrust: 902.50 kN (202,890 lbf).
Specific impulse: 296 s.
Specific impulse sea level: 296 s.
First Launch: 1998-.

More... - Chronology...

Associated Countries
See also
Associated Manufacturers and Agencies
  • Kosberg Russian manufacturer of rocket engines. Kosberg Design Bureau, Russia. 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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