The simple jet engine is a thing of the past. The latest designs are highly efficient and powerful, but they pay for their superiority in complication. Until recently, jet engines had only one ...

It's one thing to 3D-print a jet engine, but it's another to fuel it up and push the start button. That's the step that GE Aviation took when it recently fired up a simple jet engine made entirely ...

According to Reaction Engines, there's now enough money and technological expertise in place to create a ground-based SABRE demonstrator engine by 2020. A simplified diagram of the SABRE cycle.