Helicopter equipped with a plurality of lifting elements for controlling the angle of attack of its blades

摘要

The helicopter has a main rotor (1) comprising two blades (10, 20), each provided with fixation units (11, 21) e.g. screw, at a hub (2) of the rotor. Lifting elements (12, 22) are provided with hinges (16, 26), where each element is mechanically connected to one of the blades by mechanical connections (14, 24) with cornices (15, 25) for varying a pitch of the blade. Each element is rotatively integrated to the blades at which the elements are mechanically connected around longitudinal axes (13, 23) for varying the pitch of the blades. An independent claim is also included for a method for varying a pitch of a blade of a rotor of a helicopter.