公开(公告)号：US20220126993A1

公开(公告)日：2022-04-28

申请号：US17082659

申请日：2020-10-28

Applicant: Bell Textron Inc.

Inventor： Andrew Paul Haldeman ,  Paul Wayne Woolbright ,  Bryan Baskin

IPC: B64C27/605 ,  B64C27/82

Abstract: A rotor assembly includes a pitch spider, rotor blade assemblies, and pitch horn joints. The pitch spider has a body and pitch spider legs extending from the body. Each blade rotor assembly includes a rotor blade, a pitch adapter joined to the rotor blade and connecting the rotor blade to the rotor hub, and a pitch horn. Each pitch horn joint joins one of the rotor blade assemblies to a corresponding pitch spider leg. Each pitch horn joint includes a pitch horn joint bolt extending from the pitch horn of the rotor blade assembly to the pitch spider leg along a pitch horn joint axis, the pitch horn joint bolt fixed to the pitch horn; a spherical bearing having an inner ring and an outer ring; and a slider sleeve coupled to the spherical bearing, the slider sleeve enabling the pitch horn to translate along the pitch horn joint axis.

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：US11447242B2

公开(公告)日：2022-09-20

申请号：US17082659

申请日：2020-10-28

Applicant: Bell Textron Inc.

Inventor： Andrew Paul Haldeman ,  Paul Wayne Woolbright ,  Bryan Baskin

IPC: B64C27/605 ,  B64C27/82

Abstract: A rotor assembly includes a pitch spider, rotor blade assemblies, and pitch horn joints. The pitch spider has a body and pitch spider legs extending from the body. Each blade rotor assembly includes a rotor blade, a pitch adapter joined to the rotor blade and connecting the rotor blade to the rotor hub, and a pitch horn. Each pitch horn joint joins one of the rotor blade assemblies to a corresponding pitch spider leg. Each pitch horn joint includes a pitch horn joint bolt extending from the pitch horn of the rotor blade assembly to the pitch spider leg along a pitch horn joint axis, the pitch horn joint bolt fixed to the pitch horn; a spherical bearing having an inner ring and an outer ring; and a slider sleeve coupled to the spherical bearing, the slider sleeve enabling the pitch horn to translate along the pitch horn joint axis.

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.