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 ...

Later came variable-pitch propellers, where the angle of attack of the blades could be increased collectively to take a bigger “bite” of the air for more thrust. This enabled thrust variation ...

A blade on the vessel’s controllable pitch propeller system did not meet manufacturer design specifications, the investigation found.The Matson containership Maunalei was travelling to Portland ...

By attaching a wing to each of the arms, it becomes a large variable pitch propeller powered by tip thrusters. To measure the efficiency of the craft, a small lidar sensor was added to allow ...

Each of the six variable pitch propeller assemblies were equipped with five blades and actuated by a single variable pitch actuator driving a mechanical pitch change mechanism. Joby conducted a ...

This, in turn, generates additional drag, slowing the prop down. This is called a variable-pitch propeller, universal in modern turboprop powerplants. In short, you start with an extremely high ...

But this supersonic propeller design produced such intense ... drive shafts spinning beside the pilot, and variable pitch blades optimized for transonic airflow, the Thunderscreech pushed engineer ...

The variable-pitch propellers will take a minimum of 76 days to fabricate and install at a cost of roughly $120,000. “Our next step will be to sail the Niagara to shipyard (in Cleveland ...