公开(公告)号：US20210001980A1

公开(公告)日：2021-01-07

申请号：US16504057

申请日：2019-07-05

Applicant: Bell Textron Inc.

Inventor： Matthew Carl VanBuskirk ,  Michael Scott Seifert

IPC: B64C29/00 ,  B64C7/00 ,  F16F7/108 ,  F16F7/10

Abstract: A vibratory motion reduction system for a pylon assembly includes an inner member having an opening extending therein that receives a first end of the pylon assembly, an outer member moveably attached to the inner member, a tuning mass attached to the inner member and the outer member such that a vibratory motion of the pylon assembly accelerates the tuning mass, a spring member that couples to a second end of the pylon assembly, and the spring member and the tuning mass reduce the vibratory motion of the pylon assembly.

公开(公告)号：US11691723B2

公开(公告)日：2023-07-04

申请号：US17307845

申请日：2021-05-04

Applicant: Bell Textron Inc.

Inventor： Thomas C. Parham, Jr. ,  Frank Bradley Stamps ,  Jouyoung Jason Choi ,  Albert Gerard Brand ,  Michael Scott Seifert ,  Richard E. Rauber ,  John E. Brunken, Jr.

IPC: B64C29/00 ,  B64C11/32 ,  B64C11/00 ,  B64C11/02

CPC classification number: B64C29/0033 ,  B64C11/008 ,  B64C11/02 ,  B64C11/32

Abstract: A gimbaled rotor assembly for an aircraft. The gimbaled rotor assembly including a static mast; a spherical bearing comprising an inner component and an outer component pivotable relative to each other about a bearing focus, the inner component fixedly coupled to the static mast; a rotor hub rotatably coupled to the outer component, allowing for relative rotation of the rotor hub about a rotor axis and for pivoting together with the outer component about the bearing focus; and a primary hub spring coupling the outer component to the static mast and configured for opposing pivoting of the rotor hub about the bearing focus from a neutral position.

公开(公告)号：US20220355924A1

公开(公告)日：2022-11-10

申请号：US17307845

申请日：2021-05-04

Applicant: Bell Textron Inc.

Inventor： Thomas C. Parham, JR. ,  Frank Bradley Stamps ,  Jouyoung Jason Choi ,  Albert Gerard Brand ,  Michael Scott Seifert ,  Richard E. Rauber ,  John E. Brunken, JR.

IPC: B64C29/00 ,  B64C11/00 ,  B64C11/06 ,  B64C11/32

Abstract: A gimbaled rotor assembly for an aircraft. The gimbaled rotor assembly including a static mast; a spherical bearing comprising an inner component and an outer component pivotable relative to each other about a bearing focus, the inner component fixedly coupled to the static mast; a rotor hub rotatably coupled to the outer component, allowing for relative rotation of the rotor hub about a rotor axis and for pivoting together with the outer component about the bearing focus; and a primary hub spring coupling the outer component to the static mast and configured for opposing pivoting of the rotor hub about the bearing focus from a neutral position.