公开(公告)号：US10981647B2

公开(公告)日：2021-04-20

申请号：US15666654

申请日：2017-08-02

Applicant: Bell Helicopter Textron Inc.

Inventor： Robert Self ,  Nathan P. Green ,  John R. McCullough ,  Russell Cole ,  Paul Sherrill ,  Robert Wardlaw

IPC: B64C27/00 ,  F03D3/06 ,  B64C27/473 ,  B64C27/46 ,  B64C27/82 ,  B64C11/00

Abstract: The present invention includes a rotor-blade span-balancing system, including a span-balance pocket in a surface of a rotor blade; a cover operably configured to cover the span-balance pocket, wherein the cover is operably configured to be substantially flush with the surface of the rotor blade surface when covering the span-balance pocket, and wherein the cover includes a cover boss for reacting centrifugal force of the cover into the rotor blade; and one or more span-balance weights attached to the cover to span-balance the rotor blade.

公开(公告)号：US10732085B2

公开(公告)日：2020-08-04

申请号：US16124762

申请日：2018-09-07

Applicant: Bell Helicopter Textron Inc.

Inventor： Xiaoming Li ,  Bogdan R. Krasnowski ,  Robert A. Figueroa ,  Robert Wardlaw

IPC: G01N3/62 ,  G01N3/02 ,  G06F30/15 ,  G06F119/18

Abstract: A notch treatment method for flaw simulation including providing the specimen with the notch, the notch having a re-melt material layer; isolating the notch; and selectively etching the notch to provide an etched surface of the notch; wherein at least a portion of the re-melt material layer has been removed from the notch. In one aspect, there is provided a notch treatment method for flaw simulation including providing the specimen with the notch, the notch having a re-melt material layer, the specimen includes steel or an alloy thereof; isolating the notch; and selectively etching the notch with a first etching solution and a second etching solution to provide an etched surface on the notch; wherein at least a portion of the re-melt material layer has been removed from the notch.

公开(公告)号：US20190256205A1

公开(公告)日：2019-08-22

申请号：US15902402

申请日：2018-02-22

Applicant: Bell Helicopter Textron Inc.

Inventor： Andrew Maresh ,  Troy Cyril Schank ,  Chyausong Tzeng ,  John Richard McCullough ,  Robert Wardlaw

IPC: B64C27/48 ,  F16F1/38 ,  B64C3/32

Abstract: An inboard bearing attachment for carrying centrifugal force (“CF”) loads in a rotor blade assembly of a rotorcraft includes a CF fitting having a curved surface and a shear bearing retainer aligned with the curved surface. A mounting flange connected to either the CF fitting or the shear bearing retainer is used to mount the inboard bearing attachment to a yoke.

公开(公告)号：US20190039726A1

公开(公告)日：2019-02-07

申请号：US15666654

申请日：2017-08-02

Applicant: Bell Helicopter Textron Inc.

Inventor： Robert Self ,  Nathan P. Green ,  John R. McCullough ,  Russell Cole ,  Paul Sherrill ,  Robert Wardlaw

IPC: B64C27/00 ,  F03D3/06

Abstract: The present invention includes a rotor-blade span-balancing system, including a span-balance pocket in a surface of a rotor blade; a cover operably configured to cover the span-balance pocket, wherein the cover is operably configured to be substantially flush with the surface of the rotor blade surface when covering the span-balance pocket, and wherein the cover includes a cover boss for reacting centrifugal force of the cover into the rotor blade; and one or more span-balance weights attached to the cover to span-balance the rotor blade.

公开(公告)号：US10059064B2

公开(公告)日：2018-08-28

申请号：US15625598

申请日：2017-06-16

Applicant: Bell Helicopter Textron Inc.

Inventor： Robert Wardlaw ,  Werner Idler ,  John R. McCullough ,  Patrick Ryan Tisdale ,  Frank Bradley Stamps ,  James L. Braswell, Jr. ,  Ronald J. Measom ,  Paul K. Oldroyd

IPC: B29C70/30 ,  B29C70/20 ,  B32B37/02 ,  B32B37/16 ,  B32B37/18 ,  B32B5/12 ,  B32B5/26 ,  B64C11/02 ,  B64C11/04 ,  B64C11/12 ,  B64C27/33 ,  B64C27/48 ,  B29C70/38 ,  F01D5/02 ,  B32B38/18 ,  B32B5/22 ,  B64C27/32 ,  B29L31/08

CPC classification number: B29C70/30 ,  B29C70/202 ,  B29C70/38 ,  B29C70/382 ,  B29L2031/08 ,  B29L2031/082 ,  B32B5/12 ,  B32B5/22 ,  B32B5/26 ,  B32B37/02 ,  B32B37/16 ,  B32B37/18 ,  B32B38/1808 ,  B32B2603/00 ,  B64C11/02 ,  B64C11/04 ,  B64C11/12 ,  B64C27/32 ,  B64C27/33 ,  B64C27/48 ,  F01D5/02 ,  H05K999/99 ,  Y10T29/49316 ,  Y10T156/1062

Abstract: An apparatus comprising a soft in plane rotor yoke comprising two longitudinal side portions connected together via two outboard portions, wherein the outboard portions comprise a plurality of first layers formed of a first composite fabric material having a plurality of first fibers oriented in a first direction, and a plurality of second layers formed of a second composite fabric material having a plurality of second fibers oriented in a second direction. Included is an apparatus comprising a soft in plane rotor comprising two longitudinal side portions connected together via two outboard portions, wherein the outboard portions comprise a plurality of first layers formed of a first composite fabric material, and a plurality of second layers formed of a second composite fabric material, wherein the soft in plane rotor yoke does not comprise any narrow steered slit tape or filament windings.

公开(公告)号：US09714086B2

公开(公告)日：2017-07-25

申请号：US13801666

申请日：2013-03-13

Applicant: Bell Helicopter Textron Inc.

Inventor： Robert Wardlaw ,  Werner Idler ,  John R. McCullough ,  Patrick Ryan Tisdale ,  Frank Bradley Stamps ,  James L. Braswell, Jr. ,  Ronald J. Measom ,  Paul K. Oldroyd

IPC: B64C27/33 ,  B32B37/02 ,  F01D5/02

CPC classification number: B29C70/30 ,  B29C70/202 ,  B29C70/38 ,  B29C70/382 ,  B29L2031/08 ,  B29L2031/082 ,  B32B5/12 ,  B32B5/22 ,  B32B5/26 ,  B32B37/02 ,  B32B37/16 ,  B32B37/18 ,  B32B38/1808 ,  B32B2603/00 ,  B64C11/02 ,  B64C11/04 ,  B64C11/12 ,  B64C27/32 ,  B64C27/33 ,  B64C27/48 ,  F01D5/02 ,  H05K999/99 ,  Y10T29/49316 ,  Y10T156/1062

Abstract: An apparatus comprising a soft in plane rotor yoke comprising two longitudinal side portions connected together via two outboard portions, wherein the outboard portions comprise a plurality of first layers formed of a first composite fabric material having a plurality of first fibers oriented in a first direction, and a plurality of second layers formed of a second composite fabric material having a plurality of second fibers oriented in a second direction. Included is an apparatus comprising a soft in plane rotor comprising two longitudinal side portions connected together via two outboard portions, wherein the outboard portions comprise a plurality of first layers formed of a first composite fabric material, and a plurality of second layers formed of a second composite fabric material, wherein the soft in plane rotor yoke does not comprise any narrow steered slit tape or filament windings.