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

Used on: Soyuz T.

Used on: Soyuz T PAO.

Bibliography and Further Reading

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. ISBN: 5060025624. Russian-language textbook on rocket theory; contains some information on Russian rocket engines. More at amazon.com...

Siddiqi, Asif A, Soviet Space Web Page, 1999 via Dietrich Haeseler. Asif Siddiqi presents material that could not be fit into his monumental 'Challenge to Apollo'. Accessed at: http://home.earthlink.net/~cliched/main_space.html.

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