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 ...

For 50 years, Danish company Gori Propeller has been one of the foremost names in folding marine propellers used on sailboat auxiliary motor drives. These propellers fold into a streamlined form when ...

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