Reaction Engines, the British hypersonic aviation pioneer, could collapse within hours unless it can persuade investors to ...

To work, it needs to manage very high temperature airflows, and the team at Reaction Engines Ltd has developed a heat-exchanger for the purpose. This key element has just demonstrated an ...

Sabre would work like a jet engine in the lower atmosphere and like a rocket motor in the high atmosphere Reaction Engines Limited (REL), the UK company developing a revolutionary aerospace engine ...