Patent ID: 7137591
Filing Date: 2006-11-21
Classification: B64C

Abstract:
1. A rotorcraft comprising: a fuselage having a wing for providing lift during forward flight; a propulsion source for propelling the aircraft forward during forward flight; a rotor for providing lift during take-off and landings and for auto-rotating in a substantially unloaded condition during forward flight; a tilting mast including a driveshaft extending upward from the fuselage and a tilting mast frame to tilt the tilting mast relative to the fuselage, the rotor being carried by the tilting mast; and a cylic control assembly that selectively tilts the rotor relative to the tilting mast, the cyclic control assembly being selectively controllable so that a rotor force vector can pass through a center of gravity of the rotorcraft at all angles of tilt of the tilting mast.