Bob Maddox’s stage name, Crazy Rocketman, is a misnomer. Maddox doesn’t build rockets. He builds pulse-jet engines. There’s a difference. As for the crazy part—that may be true. Maddox is the world’s ...

In an effort to create a simpler, more affordable form of jet propulsion, University of Maryland spinoff Wave Engine Corporation has developed a digitally controlled modern-day pulsejet engine for ...

Since the 1960s engineers around the world have been fiddling with a novel type of jet called a rotating detonation engine (RDE), but it has never got beyond the experimental stage. That could be ...

A living motor made by combining different parts from bacteria is one of the smallest ever built, and could one day power tiny robots. Many types of bacteria are propelled by natural motors that power ...

Our SoundClip series continues with listener Larry Cottrill, who provides audio of a homemade pulse jet engine. It's very loud and very simple, and it can't be muffled. Therefore, it is impractical ...