Patent ID: 9650135
Date: 2017-05-16
CPC Classifications: B64C,B64D,G05D

Claim:
1. A rotorcraft, comprising: a fuselage defining a vertical dimension with respect to the fuselage, the fuselage being characterized by a right-side-up orientation and an upside-down orientation with respect to gravity; one or more rotors generally oriented for vertical thrust with respect to the fuselage; one or more motors connected to the one or more rotors; and a control system controlling the speed and direction with which the one or more motors drives the one or more rotors in rotor rotation; wherein the one or more motors drive the one or more rotors in either of two directions of rotor rotation; and wherein the control system controls the one or more motors to reverse the direction of rotor rotation with respect to the motors when the fuselage has switched between the right-side-up orientation and the upside-down orientation.