公开(公告)号：US11440651B1

公开(公告)日：2022-09-13

申请号：US17188785

申请日：2021-03-01

Applicant: Bell Textron Inc.

Inventor： Andrew Paul Haldeman ,  Paul Wayne Woolbright ,  Timothy McClellan Mosig ,  George Matthew Thompson

IPC: B64C27/35 ,  B64C27/48 ,  B64C27/82

Abstract: A spherical bearing centrifugal force retention link includes an inboard spherical bearing to attach to a rotor hub and an outboard spherical bearing to attach to a rotor blade. In use, the inboard spherical bearing and the outboard spherical bearing react centrifugal force radially and a torsional moment of the centrifugal force link is substantially constant throughout the rotor blade pitch range.

公开(公告)号：US20220126991A1

公开(公告)日：2022-04-28

申请号：US17082601

申请日：2020-10-28

Applicant: Bell Textron Inc.

Inventor： Aaron Alexander Acee ,  Andrew Paul Haldeman ,  Paul Wayne Woolbright ,  Timothy McClellan Mosig

IPC: B64C27/35 ,  B64C27/48

Abstract: A rotor system includes a drive hub, a set of rotor blades extending radially from the drive hub, and a set of tension-torsion straps connecting the rotor blades to the drive hub. The drive hub has a rotor mast opening extending along a mast axis. The rotor system is configured to rotate about the mast axis. The drive hub further has a set of mounting slots for mounting the tension-torsion straps. The mounting slots are arranged along a circle around the drive hub, each mounting slot extending through the drive hub along a respective mounting axis. The mounting axis of each of the mounting slots is biased relative to the mast axis. The tension-torsion straps are mounted to the drive hub at their corresponding mounting slots.

公开(公告)号：US11518506B2

公开(公告)日：2022-12-06

申请号：US17198007

申请日：2021-03-10

Applicant: Bell Textron Inc.

Inventor： Andrew Paul Haldeman ,  Michael Seifert ,  Timothy McClellan Mosig ,  Aaron Acee ,  Diana R. Tinlin ,  Andrew Thomas Carter ,  Glenn Thornton Lancaster

IPC: F04D29/36 ,  B64C27/59 ,  F01D7/00 ,  F01D5/30 ,  F01D5/02 ,  B64C11/06 ,  F04D29/32

Abstract: A blade pitch adjustment mechanism includes a pitch cylinder having a first face and pitch slots extending longitudinally from the first face, a blade sleeve having a second face and a blade slot extending longitudinally from the second face, the blade sleeve is configured to be rotationally positioned in the pitch cylinder with the second face located with the first face, wherein the blade slot and the pitch slots are cooperative to form keyway, corresponding to a discrete blade pitch, when the blade slot is aligned with a pitch slot.