Patent ID: 9573675
Date: 2017-02-21
CPC Classifications: B64C,G05D

Claim:
1. A method for engaging hovering flight for a rotary wing aircraft, the aircraft following a track T sol relative to the ground with a forward speed Va, a longitudinal direction X extending from the rear of the aircraft to the front of the aircraft, an elevation direction Z extending upwards perpendicularly to the longitudinal direction X, and a transverse direction Y extending from left to right perpendicularly to the longitudinal and elevation directions X and Z, the aircraft comprising: at least one rotary wing having a plurality of main blades of collective pitch and cyclic pitch that are variable about respective pitch axes, the aircraft being capable of performing movements in rotation about the directions X, Y, Z and of performing movements in translation along the directions X, Y, Z; an autopilot that generates control signals in predefined modes of operations and in application of flight setpoints, the control signals being capable of causing the aircraft to perform the movements in rotation and/or in translation relative to the directions X, Y, Z; and flight controls having at least one control member provided jointly with a plurality of movement axes A, B, C, D; the method comprising the following steps: applying a first mode of operation of the control members and of the autopilot when a longitudinal speed U applying a second mode of operation for the control members and the autopilot when the longitudinal speed U