| 主权项 |
1. A rotor assembly comprising:
a rotor hub rotatable about a central axis including a plurality of rotor hub arms integrally formed with and extending radially outwardly from the rotor hub, the plurality of rotor hub arms including:
a plurality of rotor hub upper arms; anda plurality of rotor hub lower arms, the rotor hub lower arms offset from the rotor hub upper arms along the central axis and defining an arm opening therebetween; blade yokes, each blade yoke comprising:
yoke arms located at opposing lateral sides of a corresponding one of the rotor hub arms to which the rotor hub arm is operably connected, each of the yoke arms includes a cantilevered end; anda bearing outer race secured to the cantilevered end of corresponding one of the yoke arms through a mechanical fastener and extending through the arm opening, the blade yoke in a noncontact arrangement with the rotor hub, wherein the mechanical fastener extends along an axis substantially parallel to the central axis; blade retention bearings, each blade retention bearing being a single-element bearing disposed at a corresponding one of the rotor hub arms and which is supportive of a corresponding one of the blade yokes and including:
a bearing inner race extending between and secured to one of the rotor hub upper arms and the corresponding rotor hub lower arm radially outboard of the bearing outer race; anda bearing element disposed between the bearing outer race and the bearing inner race; rotor blades, each rotor blade being secured to a corresponding one of the blade yokes; wherein an entirety of each blade retention bearing is located radially inboard of an outer diameter of their respective rotor hub arms. |
