The RD-0233 (Russian: Ракетный Двигатель-0233, romanized: Raketnyy Dvigatel-0233, lit. 'Rocket Engine 0233', GRAU index: 15D95) and RD-0234 (GRAU index: 15D96) are liquid-fueled rocket engines which burn a hypergolic mixture of unsymmetrical dimethylhydrazine (UDMH) fuel with dinitrogen tetroxide (N2O4) oxidizer in an 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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This article is an automated import of the Wikipedia article "RD-0233", available at https://en.wikipedia.org/wiki/RD-0233 . Text is licensed under CC BY-SA 4.0.