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 ...

Two years ago, in 2023, the Defense Advanced Research Projects Agency (DARPA) announced the birth of the Speed and Runway Independent Technologies (SPRINT) program. The goal of the effort was to ...

Everybody knows about Lego sets, but not everyone can afford them. Thankfully, there are other brands that also produce high-quality building sets. For instance, this Mould King model engine kit is ...

Boom is trying to build a Supersonic jet that could cross the Atlantic in 3.5 hours. Last December, it decided to make its own engine after engine manufacturers refused to help. Now its Symphony ...

The Boss 429 and 429 Super Cobra Jet were both vastly underrated for horsepower. But that similarity masked huge differences ...