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Reaction Engines

US

Reaction Engines, a UK-based aerospace company founded in 1989, focused on developing advanced propulsion systems and thermal management technology, most notably the Synergetic Air-Breathing Rocket Engine (SABRE). SABRE aimed to enable reusable spaceplanes like Skylon by combining jet engine fuel efficiency with rocket power, allowing for air-breathing flight up to Mach 5 before switching to rocket mode for orbital speeds. Though the company entered administration in 2024, it had established partnerships with organizations like the UK Space Agency, ESA, Rolls-Royce, Boeing, and the US Air Force to advance hypersonic technology and explore applications for its innovative precooler technology. Key associated keywords include hypersonic propulsion, air-breathing rocket engine, SABRE, Skylon, and thermal management.

commercial
United States
www.reactionengines.co.uk/
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All verified mentions of this organization in source documents.

Reaction Engines entered administration in October 2024.

GovernanceLegalValue 3.2Jul 13, 2026Review: HOTOL and Skylon

Reaction Engines received £6 million in funding in 2009.

FinancialValue 4.0Jul 13, 2026Review: HOTOL and Skylon

Reaction Engines received £60 million from the UK government in 2013.

FinancialRelationshipsValue 4.0Jul 13, 2026Review: HOTOL and Skylon

Alan Bond, John Scott Scott, and Richard Varvill founded Reaction Engines Ltd. in 1989.

GovernanceValue 2.5Jul 13, 2026Review: HOTOL and Skylon

BAE Systems took a 20% stake in Reaction Engines for £20.6 million in 2015.

RelationshipsFinancialValue 4.7Jul 13, 2026Review: HOTOL and Skylon

Reaction Engines raised £40 million in early 2023 in a round led by the UAE’s Tawazun Council.

FinancialRelationshipsValue 4.3Jul 13, 2026Review: HOTOL and Skylon

Reaction Engines secured an $11,000,000 grant from the European Space Agency in 2016.

FinancialRelationshipsGeneralValue 4.5Nov 10, 2024Spaceplane developer Reaction Engines goes bankrupt

Reaction Engines Ltd. entered administration under United Kingdom law on 2024-10-31.

LegalGeneralValue 3.5Nov 10, 2024Spaceplane developer Reaction Engines goes bankrupt

Reaction Engines established an American subsidiary, Reaction Engines Inc., which set up a facility at the Colorado Air and Space Port for testing elements of SABRE technology such as its precooler.

CapabilityPlanGeneralValue 4.0Nov 10, 2024Spaceplane developer Reaction Engines goes bankrupt

Reaction Engines proposed using SABRE on Skylon, a single-stage spaceplane designed to carry 17,000 kg to low Earth orbit.

CapabilityPlanValue 4.0Nov 10, 2024Spaceplane developer Reaction Engines goes bankrupt

Reaction Engines tested a SABRE precooler at airflow temperature conditions as high as Mach 5.

CapabilityValue 4.0Nov 21, 2019Advanced technology, investment clearing way for spaceliners

Reaction Engines is building a facility at Front Range Airport to test SABRE hypersonic engine technology.

CapabilityGrowthValue 4.0Aug 21, 2018Colorado airport receives FAA spaceport license
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