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 ...

Thirty years ago, GE Aerospace transformed commercial aviation with a material swap that most passengers never noticed. When the GE90 engine debuted on a British Airways Boeing 777 in 1995, it carried ...