RD-250
Sign in to savethumb|right| The RD-250 (, GRAU index: 8D518) is the base version of a dual-nozzle family of liquid-fuel rocket engines, burning a hypergolic mixture of unsymmetrical dimethylhydrazine (UDMH) fuel with dinitrogen tetroxide () oxidizer in a gas-generator open cycle. The RD-250 was developed by OKB-456 for Yangel's PA Yuzhmash ICBM, the R-36 (8K67). Its variations were also used on the Tsyklon-2 and Tsyklon-3 launch vehicles. It was supposed to be used on the Tsyklon-4, but since the cancellation of the project it should be considered as out of production.
Key facts
- Rocket engine.name
- RD-250 (РД-250)
- Rocket engine.image
- Rd-250.svg
- Rocket engine.country_of_origin
- USSR
- Rocket engine.first_date
- December 16th, 1965
- Rocket engine.designer
- OKB-456
- Rocket engine.manufacturer
- PA Yuzhmash
- Rocket engine.associated
- R-36, Tsyklon-2 and Tsyklon-3
- Rocket engine.status
- Out of Production
- Rocket engine.type
- liquid
- Rocket engine.oxidiser
- N2O4
- Rocket engine.fuel
- UDMH
- Rocket engine.mixture_ratio
- 2.6
- Rocket engine.cycle
- Gas-generator
- Rocket engine.combustion_chamber
- 2
- Rocket engine.used_in
- R-36, Tsyklon-2 and Tsyklon-3 first stage
via Wikipedia infobox
Article
7 sectionsContents
- Versions
- Modules
- Comparison
- Possible technological transfer to North Korea
- See also
- References
- External links
thumb|right| The RD-250 (, GRAU index: 8D518) is the base version of a dual-nozzle family of liquid-fuel rocket engines, burning a hypergolic mixture of unsymmetrical dimethylhydrazine (UDMH) fuel with dinitrogen tetroxide () oxidizer in a gas-generator open cycle. The RD-250 was developed by OKB-456 for Yangel's PA Yuzhmash ICBM, the R-36 (8K67). Its variations were also used on the Tsyklon-2 and Tsyklon-3 launch vehicles. It was supposed to be used on the Tsyklon-4, but since the cancellation of the project it should be considered as out of production.
==Versions== The engine has seen different versions made: RD-250 (GRAU index: 8D518): Base engine of the family. Used on the R-36. A bundle of three RD-250 form the RD-251 cluster. RD-250P (GRAU index: 8D518P): Improved version of the RD-250. Used on the R-36P. A bundle of three RD-250P form the RD-251P cluster. RD-250M (GRAU index: 8D518M): Improved version of the RD-250P. Used on the R-36-O. A bundle of three RD-250M form the RD-251M cluster. RD-250PM (GRAU index: 8D518PM): Improved version of the RD-250M. Used on the Tsyklon-3. A bundle of three RD-250PM form the RD-261 cluster. RD-252 (GRAU index: 8D724): Vacuum optimized version of the RD-250. Used on the R-36 and Tsyklon-2 second stages. RD-262 (GRAU index: 11D26): Improved version of the RD-252. Used on the Tsyklon-3 second stages.