This page no longer updated from 31 October 2001. Latest version can be found at KDU-426

Manufacturer Name: KDU-426. Government Designation: 11D426. Designer: Isayev. Developed in: 1968-74. Application: Soyuz-T orbital correction engine. Used on spacecraft: Soyuz T. Propellants: N2O4/UDMH Thrust(vac): 315 kgf. Thrust(vac): 3.09 kN. Isp: 292 sec. Burn time: 570 sec. Mass Engine: 270 kg. Diameter: 2.1 m. Length: 1.2 m. Chambers: 1. Chamber Pressure: 8.80 bar. Oxidizer to Fuel Ratio: 1.85. Country: Russia. Status: In Production. References: 314 , 329 , 344 . Comments: Pressure-fed engine. Used as long duration engine for correction orbits of satellites.
Back to Index
Last update 12 March 2001.
Definitions of Technical Terms.
Contact Mark Wade with any corrections or comments.
Conditions for use of drawings, pictures, or other materials from this site..
© Mark Wade, 2001 .