Patent ID: 8464978
Filing Date: 2013-06-18
Classification: B64C

Abstract:
1. A rotorcraft, comprising: a first motor coupled to a first rotor, the first rotor being a right-hand rotor; a second motor coupled to a second rotor, the second rotor being a left-hand rotor; a hinged frame, a first motor mount configured to rigidly hold the first motor, and a second motor mount configured to rigidly hold the second motor, the hinged frame including at least one actuated hinge to vary at least one inter-rotor angle of the first and second rotors, the at least one actuated hinge configured such that the rotational axes of the first and second rotors are substantially collinear when the at least one actuated hinge is in a fully open position; and control circuitry coupled to the first motor, the second motor, and the at least one actuated hinge, wherein a center of mass of the first rotor is located at substantially the same position as a center of mass of the second rotor.