KTDU-425

Manufacturer Name: KTDU-425. Government Designation: 11D425. Designer: Isayev. Developed in: 1970-73. Application: Mars 2 and 3 maneuver engine. Propellants: N2O4/UDMH. Thrust(vac): 18.850 kN (4,238 lbf). Throttled thrust(vac): 7.050 kN (1,585 lbf). Isp: 312 sec. Burn time: 560 sec. Chambers: 1. Chamber Pressure: 133.20 bar. Oxidizer to Fuel Ratio: 1.90. Country: Russia. Status: Out of Production.

Pump-fed engine. Could be throttled to 7.05 kN / 9.5 MPa / 2850 m/s. . Chamber pressure 133,2 - 95 bar.

KTDU-425 used on Spacecraft

Used on: Mars M-71.

Bibliography and Further Reading

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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