在太空探索中，很少有真正改变游戏规则的东西被开发出来。一个例子是“Skylon”可重复使用的单级入轨航天飞机。它由高超音速SABRE发动机提供动力，在低空时像喷气发动机一样运行，在高空时更像传统火箭。可悲的是，设计发动机的英国公司“反应引擎（Reac ...

The Sabre air-breathing rocket engine is designed to drive space planes to orbit and take airliners around the world in just a few hours. To work, it needs to manage very high temperature airflows ...

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 ...