Helicopters are set apart from other aircraft in a very big way: the rotors. There's the main rotor and the tail rotor. Ever ...

The pitch of a wind-turbine blade describes the angle of the blade chord to the plane of rotation. It is analogous to the way the pitch of a leadscrew determines how far its load moves with each ...

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 ...

The video, which can be viewed on Greenheck’s website, demonstrates how to adjust vane axial fan blade pitch angles to increase or decrease airflow for optimal fan performance. Greenheck says its ...

By actively managing the blade angle, operators can optimize the rotational energy from the wind, no matter the wind speed. Housed within the wind turbine pitch actuator, a hydraulic pitch ...

By pitching the blade back and forth at different angles, speeds, and amplitudes, they generated series of 'pitch profiles'. Then, they used a computer to run a genetic algorithm, which performed ...