Propellers affect more than speed and fuel economy. Here's how to choose the best propellers for multiple outboards. The post ...

Sharrow's extraordinary looped propellers were already some 30% more efficient than traditional designs – and now the company has put two of them together into a coaxial, contra-rotating prop that ...

Personal electric VTOL (vertical take off and landing) commuting may not be far off, thanks to accelerating improvements in battery technology. Joby Aviation has put forward an incredible two-seater ...

A British drone enthusiast known only by his YouTube user name, gasturbine101, has built a home-made flying (well, hovering) machine using 54 counter-rotational propellers. Each of the 54 propellers ...