Liquid-fuelled rocket engine design has largely followed a simple ... familiar with since we started sitting around campfires. A diagram of the JAXA rotating detonation engine, showing the ...

Near-term successes could lead to hypersonic travel around the world, but in the long term, this could be a super-efficient way to traverse the solar system.

When the idea of an engine hacks theme was being kicked around at Hack a Day, the subject of rocket engines was one of the first to come up. There was a problem though; solid rocket motors are far ...