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 ...

Multicopters dispense with the need for one by differentially controlling four or more motors to provide roll, pitch ... which means the angle of attack of each rotor blade changes during each ...

The pitch control monitors and adjusts the angle of the wind turbine’s rotor blades, which can measure up to 65 meters long, and thus controls the rotational speed of the turbine. Although 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 ...