SABRE
Historical Reaction Engines Limited SABRE combined-cycle engine concept. The UK Space Agency's 2022 evaluation describes air-breathing operation with atmospheric air and onboard liquid hydrogen to about Mach 5, transition to rocket mode using onboard liquid oxygen and hydrogen for exo-atmospheric flight and re-entry, and an unfinished DEMO-A test-readiness objective; company administration records support the late-2024 cessation of trading.
Identity
- Aliases
- Synergetic Air-Breathing Rocket Engine
- Domains
- aviationspaceflight
- Identity Level
- model
- Kind
- combined-cycle
- Name
- SABRE
- Status
- historical
Details
- Description
- Historical Reaction Engines Limited SABRE combined-cycle engine concept. The UK Space Agency's 2022 evaluation describes air-breathing operation with atmospheric air and onboard liquid hydrogen to about Mach 5, transition to rocket mode using onboard liquid oxygen and hydrogen for exo-atmospheric flight and re-entry, and an unfinished DEMO-A test-readiness objective; company administration records support the late-2024 cessation of trading.
- Developers
- Manufacturers
- Propellants
- atmospheric airliquid hydrogenliquid oxygen
Links
Assets & Meta
- Creation Time
- July 29, 2026 at 10:41:38 UTC
- Updated Time
- August 15, 2026 at 06:54:08 UTC
Other
- Sources
- Accessed Date
- 2026-07-29
- Publisher
- UK Companies House
- Title
- Reaction Engines Limited: statement of administrator's proposal
- Accessed Date
- 2026-07-29
- Publisher
- UK Companies House
- Title
- Reaction Engines Limited: administrators' progress report to 30 April 2025
- Accessed Date
- 2026-08-14
- Note
- The UK Space Agency's 2022 evaluation describes SABRE's air-breathing atmospheric-air/liquid-hydrogen mode to about Mach 5, transition to liquid-oxygen/liquid-hydrogen rocket mode, and incomplete DEMO-A test readiness; it is not treated as evidence of current development.
- Publisher
- UK Space Agency
- Title
- Synergetic Air-Breathing Rocket Engine Programme Evaluation Report 2022