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 ...

A company that manufactures jet engine parts in Knoxville is adding more than 50 jobs to begin building full engines with 3D printers. Beehive Industries, an aerospace technology developer, has ...

The world of boats can be confusing, especially for those who spend most their time fawning over automobiles. In rare cases like this jet-powered sport boat from the 1990s that looks like a Porsche on ...