Encyclopedia Astronautica

Credit: KBKhA
Kosberg lox/lh2 rocket engine. 39.2 kN. Space tugs or upper stage for Onega or Yastreb versions of Soyuz. Isp=476s. Single annular chamber with expansion-deflection nozzle, separate turbopumps. Design concept 1993. Hot-tests in 1998.

Application: Upper stages, such as a space tug or injection stage for the Onega upgraded version of the Soyuz launch vehicle.

Engine: 320 kg (700 lb). Chamber Pressure: 71.50 bar. Thrust to Weight Ratio: 12.49. Oxidizer to Fuel Ratio: 6.

AKA: RO-97; RD-0126.
Status: Design concept 1993-.
Unfuelled mass: 320 kg (700 lb).
Height: 2.60 m (8.50 ft).
Thrust: 39.20 kN (8,813 lbf).
Specific impulse: 476 s.
First Launch: 1993-.

More... - Chronology...

Associated Countries
See also
Associated Launch Vehicles
  • Onega Russian orbital launch vehicle. Launch vehicle proposed for the 'Kliper' manned spaceplane in 2004. The 'Onega' was a hitherto-unrevealed massive improvement of the reliable Soyuz. It would deliver double the payload to a space station orbit, and could be available by 2010 if funding was made available. More...

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

Associated Propellants
  • Lox/LH2 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. Liquid hydrogen was identified by all the leading rocket visionaries as the theoretically ideal rocket fuel. It had big drawbacks, however - it was highly cryogenic, and it had a very low density, making for large tanks. The United States mastered hydrogen technology for the highly classified Lockheed CL-400 Suntan reconnaissance aircraft in the mid-1950's. The technology was transferred to the Centaur rocket stage program, and by the mid-1960's the United States was flying the Centaur and Saturn upper stages using the fuel. It was adopted for the core of the space shuttle, and Centaur stages still fly today. More...

  • Semenov, Yuri P Editor, Raketno-kosmicheskaya korporatsiya 'Energia' imeni S P Koroleva, Moscow, Russia, 1996.
  • Russian Arms Catalogue, Vol 5 and 6, Military Parade, Moscow via Dietrich Haeseler.
  • KBKhA Web Site, Web Address when accessed: here.

Home - Browse - Contact
© / Conditions for Use