In the world of aerospace engineering and maritime technology, propeller design plays a pivotal role in the efficiency, performance, and safety of various types of vehicles, from aircraft to ships.

Hydro turbines convert water pressure into mechanical energy. When used with an electrical generator, the movement of the turbine’s runners or propellers turns a shaft to produce electricity. There ...

Rather then driving a propeller, the Tesla turbine instead turns a Lily impeller, which pulls the boat through the water rather than pushing it along. The impeller uses a nature-inspired design ...

Lego propellers are tested in water to find out which design delivers the most thrust. From worst to best, multiple propellers are compared for performance, with some surprising results.