Danish company Gori Propeller has been one of the foremost names in folding marine propellers used on sailboat auxiliary ...

Swiss marine giant ABB has spent more than a decade developing a radically different Voith-Schneider take on a marine ...

which will immediately begin reducing the blade pitch on the prop. This reduces power demand and creates a decelerating effect on the aircraft, causing air to flow through the propeller and feed ...

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 ...