// PROPULSION SYSTEMS AND ENGINE TECHNOLOGY TERM
SABRE Engine
The SABRE engine, or Synergetic Air-Breathing Rocket Engine, is a unique hybrid jet and rocket engine designed to power an aircraft from takeoff to orbit without needing to drop stages. It works by breathing air like a jet at lower altitudes and then switching to rocket mode in space.
TECHNICAL DEFINITION
The SABRE (Synergetic Air-Breathing Rocket Engine) is an advanced hybrid propulsion system developed by Reaction Engines Limited, integrating both air-breathing jet and closed-cycle rocket engine functionalities, distinguished by its innovative pre-cooler technology that rapidly cools incoming air for high-speed flight and efficient use of liquid hydrogen fuel to enable single-stage-to-orbit capabilities for vehicles like the proposed Skylon spaceplane.
BACKGROUND
SABRE was a concept under development by Reaction Engines Limited for a hypersonic precooled hybrid air-breathing rocket engine. The engine was designed to achieve single-stage-to-orbit capability, propelling the proposed Skylon spaceplane to low Earth orbit. SABRE was an evolution of Alan Bond's series of LACE-like designs that started in the early/mid-1980s for the HOTOL project. Reaction Engines went into bankruptcy in 2024 before completing the project.
READ MORE ON WIKIPEDIASYNONYMS & ALIASES
- Synergetic Air-Breathing Rocket Engine
- Reaction Engines SABRE
- Skylon Engine
- Hypersonic Engine
- Combined Cycle Engine
USAGE NOTE
The SABRE engine is primarily discussed in the context of advanced space access, reusable launch vehicles, and hypersonic flight applications.
DEVELOPERS
Organizations developing technology related to SABRE Engine.
The primary developer of the SABRE (Synergetic Air-Breathing Rocket Engine) technology, which combines jet and rocket engine capabilities for hypersonic flight and space access.
A global power systems company that has collaborated with Reaction Engines on the development of the SABRE engine's core technologies, particularly in advanced propulsion systems.
A leading defense, aerospace, and security company that made a significant investment in Reaction Engines and has a strategic partnership to support the development and commercialization of the SABRE engine.
Has provided substantial funding and technical support to Reaction Engines for the development and testing of key SABRE engine components, particularly for its pre-cooler technology.
The UK government agency responsible for the nation's civil space program, which provides significant funding and strategic support to Reaction Engines for the SABRE engine project.
A global aerospace company that has invested in Reaction Engines and serves as a strategic partner, exploring the potential applications of SABRE technology for future high-speed flight and space launch systems.