Dynamic-variable-pitch is based on a flexible cam made of flex-steel and other unique components that mate to a propeller or rotor system. The cam vectors thrust and counters dissymmetry of lift.

But variable-pitch propellers have a lot of complicated machinery in the hub, which makes them more expensive. Fixed-pitch propellers are cheaper, but they are always a compromise.

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 ...

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 ...

Europe’s EASA has signed off on a modified version of Tecnam’s best-selling P2002 Sierra with a variable pitch propeller. The P2002JF provides an increase in cruise speed of 5 to 7 knots and ...

A 3D-printed hybrid drone can quickly transition between air and water thanks to variable pitch propellers. Watch a video of the drone in action.

The original Avro 504K with Turnbull's variable-pitch propeller that was successfully tested in June of 1927. It is part of the collection at the Canada Aviation and Space Museum.

The propeller component of this assembly was manufactured by Ole Flottorp in Chicago, Illinois for James B. Lund and R.D. Dwight, also of Chicago, who designed and constructed a mammoth tandem ...