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 US has lifted its export ban on American-made jet engine parts and technology to China, according to a person familiar with the matter. The US Department of Commerce has told GE Aerospace that it ...