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 ...

The aviation world is buzzing with excitement over a breakthrough technology that could change how we fly. Enter wave engines—jet engines that don’t rely on spinning blades or turbines. Instead, they ...