Rim-driven thrusters turn the normal propeller-motor arrangement inside out; rather than mounting the motor at the center of the propeller, they use a large hollow motor, with the blades attached to ...

The jet-powered motorcycle isn't new, but this resourceful YouTuber put a new spin on it with a Harley-Davidson base and a ton of engineering.

Demand for small jet engines to power drones and missiles continues to grow as armed forces seek to build stockpiles of such weapons. United States Micro ...