Pioneering a new class of propulsion for reusable launch vehicles

Our goal is to deliver a truly versatile propulsion system – a hybrid air-breathing rocket engine that can power an aircraft from a standing start to over five times the speed of sound for hypersonic flight in the atmosphere, and over 25 times the speed of sound for space access. With its wide range of operation and scalability, the Synergetic Air-Breathing Rocket Engine (SABRE) represents a defining moment in powered flight.



A new class of engine for propelling both high speed aircraft and spacecraft.

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We have developed world leading capabilities in advanced heat exchanger development, design and manufacture.

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To build the world’s most powerful cooling systems, we’ve invested in the most advanced manufacturing technology.

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The potential to revolutionise multiple industries

Reaction Engines’ patented heat exchanger technologies present the opportunity to create a step change in thermal management solutions across a range of industries including aerospace, automotive, energy and industrial processes.

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Reaction Engines to support research into UK spaceport feasibility

Reaction Engines launches feasibility study with Machrihanish Airbase Community Company as part of UK government funded research into UK Spaceport sites

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Reaction Engines participating in UK MOD - funded research programme to develop hypersonic propulsion systems

The Ministry of Defence intends to place a £10M contract to develop hypersonic propulsion systems for increased aircraft performance and capability.

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Reaction Engines announces European collaboration to investigate the impact of air-breathing propulsion systems on future space launch architectures

Reaction Engines is delighted to announce a collaboration with the French Space Agency, the Centre National d’Etudes Spatiales (CNES) and the UK Space Agency to work together on a joint study to investigate the impact of air-breathing propulsion systems on future space launch architectures.

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Reaction Engines identified in London Stock Exchange Group’s ‘1000 Companies to Inspire Britain’ 2019 report

The report is a celebration of the UK’s fastest-growing and most dynamic small and medium sized businesses (SMEs), with companies representing over 40 sectors and spanning every country and region across the UK.

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