Constellations, Launch, New Space and more…
“Sabre engines”
Reaction Engines Secures New UK Government Funding for Space Access Programme

Science Minister Amanda Solloway at Reaction Engines. (Credit: Reaction Engines)

SWINDON, UK (UK Space Agency PR) — New government funding will help leading UK space technology company Reaction Engines bring low-carbon space propulsion one step closer.

The £3.9 million [US $5.4 million] grant from the UK Space Agency will support the development of Reaction Engines’ ground-breaking SABRE technology, enabling low-carbon air-breathing space access propulsion technology to be applied more widely in the space sector and beyond.

  • Parabolic Arc
  • July 13, 2021
Reaction Engines Full Validates SABRE Engine Precooler in Hypersonic Heat Conditions
Sabre engine precooler test. (Credit: Reaction Engines)

ABINGDON, England (Reaction Engines PR) — Reaction Engines has successfully tested its innovative precooler at airflow temperature conditions representing Mach 5, or five times the speed of sound, marking a significant milestone in the development of its SABRE™ engine and paving the way for a revolution in hypersonic flight and space access.

The precooler heat exchanger is a vital component of Reaction Engines’ revolutionary SABRE air-breathing rocket engine and is an enabling technology for other precooled propulsion systems and a range of commercial applications.

  • Parabolic Arc
  • October 22, 2019
Reaction Engines Celebrates 20 Years, Looks Forward to Success with Skylon



On 15th August 2009, this Oxfordshire aerospace company celebrated its 20th anniversary. Reaction Engines Ltd (REL) has been developing the SKYLON spaceplane, a progression from the HOTOL project, over the past 2 decades and believes that a single stage to orbit (SSTO) reusable launch vehicle (RLV) is the future of global Space travel.

The secret to SKYLON’s success is its innovative SABRE engine which possesses the dual capability to be in air-breathing mode up to 30km and Mach 5 before switching to rocket mode.


  • Parabolic Arc
  • August 26, 2009
More Tests Planned on Technology to Power Skylon Spaceplane

UK-based Reaction Engines will conduct additional tests on an advanced rocket nozzle design for use in its Skylon spaceplane, reports. The company is testing an expansion-deflection (ED) nozzle, which is designed to compensate for changing atmospheric pressure at different altitudes to deliver superior engine performance. Reaction Engines plans to use ED nozzles in its Sabre engine, which will power its horizontal take-off, horizontal landing Skylon orbital spaceplane.

  • Parabolic Arc
  • April 19, 2008