Patent ID: 8857581
Filing Date: 2014-10-14
Classification: B64C,F16F

Abstract:
1. A rotor hub, comprising: a central member rotatably coupled to a rotor mast; a blade grip movably coupled to the central member; and an adjustable damper operably associated with the blade grip; a blade strap configured to movably attach the blade grip to the central member, the blade strap forms an opening that receives the adjustable damper; a bearing disposed within the opening of the blade strap and attached to the adjustable damper; wherein the force exerted by the rotor blade passes through the bearing and damped with the adjustable damper; wherein the blade grip exerts a force on the central member during flight; and wherein the adjustable damper is adjusted between a first spring rate and a second spring rate to dampen the force exerted on the central member.