Reusable vehicles are vital to make access to space more affordable, but conventional rocket engines have their limits. Oliver Nailard describes how UK firm Reaction Engines hopes to revolutionize space access with a new class of propulsion system, the Synergetic Air Breathing Rocket Engine (SABRE)

中文翻译：

---

消除天空与空间的界限

可重复使用的车辆对于使进入太空的成本更加低廉至关重要，但传统的火箭发动机有其局限性。Oliver Nailard 描述了英国公司 Reaction Engines 如何希望通过一种新型推进系统——协同空气呼吸火箭发动机 (SABRE) 来彻底改变太空通道