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RD-0233

RD-0233 (РД-0233)
Country of origin USSR
First flight 1973-04-09
Designer OKB-154
Associated L/V UR-100N, Rokot and Strela
Status Out of Production
Liquid-fuel engine
Propellant N2O4 / UDMH
Cycle Oxidizer Rich Staged Combustion
Configuration
Chamber 1
Performance
Thrust 520 kilonewtons (120,000 lbf)
Chamber pressure 20.5 megapascals (2,970 psi)
Isp (vac.) 310 s (3.0 km/s)
Isp (SL) 285 s (2.79 km/s)
Burn time 121 seconds
Used in
UR-100N core stage

The RD-0233 (GRAU Index 15D95) and RD-0234 (GRAU Index 15D96) are liquid rocket engines, burning N2O4 and UDMH in the oxidizer rich staged combustion cycle. The only difference between the RD-0233 and the RD-0234 is that the latter has a heat exchanger to heat the pressuring gasses for the tanks. Three RD-0233 and one RD-0234 are used on the first stage of the UR-100UTTKh ICBM. While the engine is out of production, the ICBM as well as Rokot and Strela remain operational as of 2015.


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