Patent ID: 8998127
Filing Date: 2015-04-07
Classification: B64C

Abstract:
1. A method for reducing the ground roll of a rotorcraft landing in autorotation, the method comprising: selecting a rotorcraft comprising at least one engine and a rotor; executing, by the rotorcraft, a flight comprising a first portion, second portion, and third portion, the first portion immediately preceding the second portion, the second portion immediately preceding the third portion; flying, during the first portion, the rotorcraft with the rotor exclusively in autorotation; flying, during the second portion, the rotorcraft with rotation of the rotor being powered at least partially by the at least one engine; flying, during the third portion, the rotorcraft with the rotor exclusively in autorotation; terminating simultaneously the flight and the third portion with a touchdown of the rotorcraft; and increasing, during the second portion, the rotational speed of the rotor.