KDU-426 home
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Engine Model: KDU-426. Manufacturer Name: KDU-426. Government Designation: 11D426. Designer: Isayev. Developed in: 1968-74. Application: Soyuz-T orbital correction engine. Propellants: N2O4/UDMH. Thrust(vac): 3.089 kN (694 lbf). Isp: 292 sec. Burn time: 570 sec. Mass Engine: 270 kg (590 lb). Diameter: 2.10 m (6.80 ft). Length: 1.24 m (4.05 ft). Chambers: 1. Chamber Pressure: 8.80 bar. Oxidizer to Fuel Ratio: 1.85. Thrust to Weight Ratio: 1.16. Country: Russia. Status: In Production.

Pressure-fed engine. Used as long duration engine for correction orbits of satellites.

KDU-426 used on Spacecraft
Bibliography:

  • Haeseler, Dietrich, Visit to the museum of Chemical Machining Design Bureau, Kalinin 1994 via Dietrich Haeseler.
  • Kudryavtsev, V M, et.al., Osnovy Teorii i Rascheta, Moscow, Vysshaya Shkola, 1993 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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