Method for assisting a pilot of a single-drive rotary wing aircraft during a phase of autorotation

摘要

The method involves measuring a monitoring parameter of a rotary wing aircraft (1) in flight during monitoring step in order to detect failure of a single engine (13). An electric machine (12) is controlled to deliver auxiliary power to a main rotor when engine failure is detected so as to assist a pilot of the aircraft in maneuvering the aircraft during autorotation flight following the failure. Instantaneous speed of rotation is measured during monitoring step in order to evaluate drop of power of the main rotor representative of the failure. An independent claim is also included for a rotary wing aircraft.