RD-275
RD-275 is the uprated Proton first-stage variant directly modified from RD-253, using nitrogen tetroxide/UDMH propellants and the inherited oxidizer-rich staged-combustion architecture. Proton-PM records production beginning in 1992 and states that RD-275 was 7.7% more powerful than RD-253; the exact model is historical and retired, preceding the later RD-276.
Identity
- Aliases
- 14D14
- Domains
- spaceflight
- Identity Level
- variant
- Kind
- liquid-rocket-engine
- Name
- RD-275
- Status
- retired
Details
- Description
- RD-275 is the uprated Proton first-stage variant directly modified from RD-253, using nitrogen tetroxide/UDMH propellants and the inherited oxidizer-rich staged-combustion architecture. Proton-PM records production beginning in 1992 and states that RD-275 was 7.7% more powerful than RD-253; the exact model is historical and retired, preceding the later RD-276.
- Developers
- Family
- Lineage
- Note
- Proton-PM records RD-275 as the next serial modification of RD-253, with thrust increased by 7.7 percent.
- Related Propulsion System
- Relationship
- direct-derivative-of
- Sources
- Accessed Date
- 2026-07-29
- Publisher
- Proton-PM
- Title
- History of Proton-PM
- Manufacturers
- Propellants
- nitrogen tetroxideUDMH
- Rocket Specs
- Cycle
- oxidizer-rich staged combustion
- Service Entry Date
- 1995
Links
- Official Url
- https://protonpm.ru/company/history/
Assets & Meta
- Creation Time
- July 29, 2026 at 11:57:55 UTC
- Updated Time
- August 23, 2026 at 18:48:53 UTC
Other
- Sources
- Accessed Date
- 2026-07-29
- Publisher
- Proton-PM
- Title
- History of Proton-PM
- Accessed Date
- 2026-07-29
- Publisher
- Proton-PM
- Title
- Proton-PM engines power the 430th Proton launch
- Accessed Date
- 2026-08-23
- Note
- Proton-PM records RD-275 production beginning in 1992, its Proton first-stage role, and its status as the uprated direct modification of RD-253.
- Publisher
- Proton-PM
- Title
- Proton-PM transferred a full-scale RD-275 model to Perm Aviation Technical School
- Accessed Date
- 2026-08-23
- Note
- NASA states that RD-253 successors retained the staged-combustion configuration, supporting the inherited oxidizer-rich cycle recorded for RD-275.
- Publisher
- NASA Technical Reports Server
- Title
- 10TH NATIONAL SPACE SYMPOSIUM