A group of NASA experts aren't shooting for the stars with a breakthrough jet engine core design now in development. Instead, the hybrid machine could reduce fuel use by up to 10% for Earth-based ...

The engine is being developed by British scientists and engineers. It is a hybrid between a conventional jet engine, and a rocket system powered by liquid oxygen. The system will be reusable ...

Reaction claims its hybrid jet-rocket engine could one day enable a new era of hypersonic flight – where any destination around the world is never more than a few hours away – leading some to ...