Barring the smallest manned airplanes, most aircraft that are pulled around by a prop have variable pitch propellers. The reason for this is simple efficiency. Internal combustion engines are most ...

Forbes contributors publish independent expert analyses and insights. Writing about vertical flight aircraft & advanced aviation technology. The EHang 184 electric VTOL aircraft has two ...

Now that we have definitely arrived in the 21st Century, you'd think that the military with their substantial budgets would have only the latest and most fancy technology flying in the sky. They do, ...

What does it take for a quadcopter to carry a 10-kg (22-lb) payload and fly for three hours straight? It takes petrol power – and a clever variable pitch rotor system that makes this gas-powered drone ...

The audio version of this article is generated by AI-based technology. Mispronunciations can occur. We are working with our partners to continually review and improve the results. W. Rupert Turnbull ...