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 ...

Moreover, the engines are designed to run on liquid natural gas (LNG), which is 1/10th the price of traditional jet fuel, offers more energy per unit weight, and produces 30% less CO2 when burned. The ...

Cummins, a leading U.S. corporation that has since expanded operations into several other countries, has been around for more than a century, and is known for its robust diesel engines. However, while ...