This page no longer updated from 31 October 2001. Latest version can be found at www.astronautix.com

astronautix.com 8D43 + 11D43


Government Designation: 8D43 + 11D43. Designer: Kosberg. Application: UR-500 stage 1 original concept. Used on stages: UR-500 Monoblok Stage 1M, UR-500 Polyblock Stage 1P. Used on launch vehicles: Monoblock UR-500, Polyblock UR-500. Propellants: N2O4/UDMH Thrust(vac): 229,200 kgf. Thrust(vac): 2,247.45 kN. Isp: 310 sec. Isp (sea level): 280 sec. Burn time: 115 sec. Chambers: 1. Country: Russia. Status: Hardware. References: 273 . Comments: Originally the first stage of the Proton was designed for 4 x fixed 11D43 and 4 x gimballed Kosberg 8D43 (see separate entries for each engine for details of those engines). This configuration was replaced by 6 x 11D48 from Glushko.
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 .