In a previous post about three innovative propulsion systems I very briefly covered Reaction Engines and their SABRE engine.
Progress continues, a press release from RIAT highlights another milestone;
The SABRE engine is capable of operating as a jet engine and a rocket engine, powering aircraft at up to five times the speed of sound within the atmosphere or directly into Earth orbit at twenty-five times the speed of sound. Its ground-breaking technology – an air pre-cooler – is designed to cool continuously the incoming airstream from over 1,000⁰C to minus 150⁰C in less than 1/100th of a second (six times faster than the blink of an eye), effectively doubling the current technical limits of jet engine speeds.
The tests, undertaken at Reaction Engines’ facility in Oxfordshire, integrated the ground-breaking flight-weight pre-cooler technology with a jet engine and a novel helium cooling loop, demonstrating the crucial new technologies in the SABRE engine. This success marks another major advance towards the creation of vehicles like SKYLON – a revolutionary reusable space vehicle that will be powered by SABRE engines, designed primarily to transport satellites and other cargo into space.
Read more here