公开(公告)号：US10308356B2

公开(公告)日：2019-06-04

申请号：US15359594

申请日：2016-11-22

Applicant: Bell Helicopter Textron Inc.

Inventor： Dalton T Hampton ,  Thomas Clement Parham, Jr.

IPC: B64C27/32 ,  B64C27/35 ,  B64C27/43 ,  B64C27/78 ,  B64C27/82

Abstract: A rotor hub assembly for a rotorcraft includes a yoke forming a bearing bore. The yoke has a teetering axis extending through the bearing bore. The rotor hub assembly includes a flapping bearing disposed in the bearing bore. The flapping bearing is operable to regulate teetering of the yoke about the teetering axis. The rotor hub assembly includes an axial spring abutting the flapping, thereby reducing movement of the flapping bearing along the teetering axis.

公开(公告)号：US20180141650A1

公开(公告)日：2018-05-24

申请号：US15359594

申请日：2016-11-22

Applicant: Bell Helicopter Textron Inc.

Inventor： Dalton T Hampton ,  Thomas Clement Parham, JR.

IPC: B64C27/43 ,  B64C27/78

CPC classification number: B64C27/43 ,  B64C27/32 ,  B64C27/35 ,  B64C27/78 ,  B64C27/82

Abstract: A rotor hub assembly for a rotorcraft includes a yoke forming a bearing bore. The yoke has a teetering axis extending through the bearing bore. The rotor hub assembly includes a flapping bearing disposed in the bearing bore. The flapping bearing is operable to regulate teetering of the yoke about the teetering axis. The rotor hub assembly includes an axial spring abutting the flapping, thereby reducing movement of the flapping bearing along the teetering axis.