Method for directional control of a hybrid helicopter and hybrid helicopter provided with a directional control device suitable for implementing said method

摘要

The method involves modifying pitches of blades of propellers, respectively. A main lift rotor is arranged above a fuselage, and the propellers are arranged on both sides of the fuselage. An original order is generated for modifying yaw attitude of a hybrid helicopter by increasing the pitch of one of the blades and by decreasing the pitch of the other blade by a differential pitch. The original order is optimized as a function of a position of a thrust control to obtain an optimized yaw control order that is applied to the blades. An independent claim is also included for a hybrid helicopter comprising a main lift rotor arranged above a fuselage.