The reason toroidal propellers may be quieter is because of their complex shape – it minimises the strength of the vortex (a spiralling movement of air, water, or another fluid) that naturally ...

The toroidal boat propeller pair installed. (Credit: rctestflight) As boring as propeller designs may seem to the average person, occasionally there’s a bit of a dust-up in the media about a ...

Discover why this innovative toroidal propeller is attracting attention. By altering propeller design, we may have unlocked a way to enhance efficiency and reduce noise in drones and various ...

Propellers are designed to take a fluid, generally air or water, and use a rotating motion to push that fluid through. They're evolutions, in a sense, from the Archimedes' screw, which was likely ...

The toroidal propeller, one of the Lab's @RD100Awards winners, has a unique, closed-form propeller design that makes it a significantly quieter alternative to common multirotor propellers on ...

These strangely-shaped twisted-toroid propellers look like a revolutionary (sorry) advance for the aviation and marine sectors. Radically quieter than traditional propellers in both air and water ...