Helicopter? Close, but not quite, since the rotor blades are fixed-pitch. We’ll just go with “monocopter” for now and sort out the details later for this ducted-fan, thrust-vectored UAV.

This can be used for propulsion on a boat, by spinning a tall cylinder called a Flettner rotor. This takes advantage of Magnus effect to generate thrust. The boat uses a 3D-printed hull ...

The Norsepower Rotor Sail, positioned on the forecastle deck, harnesses wind power to create thrust through the Magnus effect. The wind propulsion system integrates artificial intelligence (AI ...