RD-56 home
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Engine Model: RD-56. Manufacturer Name: RD-56. Government Designation: 11D56. Other Designations: KVD-1, D-56. Designer: Isayev. Developed in: 1960-77. Application: N1 block R. Propellants: Lox/LH2. Thrust(vac): 69.600 kN (15,647 lbf). Isp: 462 sec. Burn time: 800 sec. Mass Engine: 282 kg (621 lb). Diameter: 1.56 m (5.11 ft). Length: 2.14 m (7.02 ft). Chambers: 1. Chamber Pressure: 55.90 bar. Area Ratio: 198.70. Oxidizer to Fuel Ratio: 6.00. Thrust to Weight Ratio: 25.17. Country: Russia. Status: Development ended 1971.

Oxygen-hydrogen engine for cryogenic upper stage. Developed but never flown. Design sold to India in 1990's for GSLV.

Engine Model: RD-56M. Manufacturer Name: RD-56M. Government Designation: 11D56M. Other Designations: KVD-1M. Designer: Isayev. Developed in: 1994-. Application: Proton and Angara upper stage KVRB, 12KRB upper stage for GSLV (India). Propellants: Lox/LH2. Thrust(vac): 73.580 kN (16,541 lbf). Isp: 461 sec. Chambers: 1. Country: Russia. Status: In development. First Flight: 2001. Last Flight: 2006. Flown: 4.00.

Engine for KVRB cryogenic kick stage. Was to be completed by the end of 1995 (Competing against motor by CADB). Currently no decision taken. Also used in 12KRB cryogenic upper stage for the Indian GSLV launcher.

Engine Model: RD-56M LNG. Manufacturer Name: RD-56M LNG. Other Designations: KVD-1M LNG. Designer: Isayev. Developed in: 1996-. Application: Vozdushnyy Start stage 2. Propellants: Lox/LNG. Thrust(vac): 73.500 kN (16,523 lbf). Chambers: 1. Country: Russia. Status: Developed 1996-.

Variant of RD-56M using liquid natural gas in place of hydrogen. First engine tests performed in 1998.

RD-56 used on Rocket Stages
  • Used on stage: KVRB. on launch vehicle: GSLV.
  • Used on stage: KVRB. on launch vehicle: N1.
  • Used on stage: N1-Sr. on launch vehicle: N1.
Bibliography:

  • Semenov, Yu. P., S P Korolev Space Corporation Energia, RKK Energia, 1994.
  • Kudryavtseva, V M, ed., Zhidkostnikh Raketnikh Dvigatley, Visshaya Shkola, Moscow, 1993.
  • Novosti Kosmonavtiki, "Osobennosti konstruktsii dvigatelya KVD-1", 1994, Issue 6, page 38.
  • Agapov, V, Novosti Kosmonavtiki, "Zapuski kosmicheskikh apparatov 'Zenit-2'", 1996, Issue 10, page 65.
  • Haeseler, Dietrich, Visit to the museum of Chemical Machining Design Bureau, Kalinin 1994 via Dietrich Haeseler.
  • Polovnikov S P; Karpov, A S, Vestnik Aviatsii i Kosmonavtiki, "Projekt 'Vozdushnyy Start'", Moscow, 1-2/98 via Dietrich Haeseler.
  • Russian Arms Catalogue, Vol 5 and 6, Military Parade, Moscow via Dietrich Haeseler.
  • Siddiqi, Asif A, Soviet Space Web Page, 1999 via Dietrich Haeseler. Web Address when accessed: http://home.earthlink.net/~cliched/main_space.html.
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