RD-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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