RD-0233

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.[3][1][2] 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.[4] Three RD-0233 and one RD-0234 are used on the first stage of the UR-100UTTKh ICBM.[5] While the engine is out of production, the ICBM as well as Rokot and Strela remain operational as of 2015.[5]

RD-0233 (РД-0233)

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

See also

• UR-100N - ICBM for which this engine was originally developed for.
• Rokot - launch vehicle that is a repurposed UR-100N.
• Strela - launch vehicle that is a repurposed UR-100N.
• Rocket engine using liquid fuel

References

1. "RD-0233, RD-0234, RD-0235, RD-0236, RD-0237. Intercontinental ballistic missiles RS-18". KBKhA. Retrieved 2015-06-19.
2. "RD-0233". Encyclopedia Astronautica. Archived from the original on 2015-08-24. Retrieved 2015-06-19.
3. "Rockot Launch Vehicle". Khrunichev State Research and Production Space Center. Retrieved 2015-06-19.
4. "RD-0234". Encyclopedia Astronautica. Archived from the original on 2015-08-24. Retrieved 2015-06-19.
5. Zak, Anatoly. "UR-100N Family". RussianSpaceWeb.com. Retrieved 2015-06-19.

External links

• KbKhA official information on the engine.
• Encyclopedia Astronautica information on the propulsion module.