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公开(公告)号：US11281236B2
公开(公告)日：2022-03-22
申请号：US16257651
申请日：2019-01-25
Applicant: Bell Helicopter Textron Inc.
Inventor： Yann Lavallee , Eric Albert Sinusas , Robert Patrick Wardlaw
Abstract: A yaw control system for a rotorcraft featuring a floor mounted pair of pedals configured to measure an up and down motion of a pair of pedals and utilize that up and down motion as a yaw moment control input. The pair of pedals can rock laterally, fore and aft, or vertically. The pair of pedals can be mechanically interconnected to other pairs of pedals or electrically interconnected to duplicate motion across pairs of pedals.
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公开(公告)号：US20190016457A1
公开(公告)日：2019-01-17
申请号：US15990624
申请日：2018-05-26
Applicant: Bell Helicopter Textron Inc.
Inventor： Robert Patrick Wardlaw , John Richard McCullough , Amarjit Olenchery Kizhakkepat , Tyler Wayne Baldwin
CPC classification number: B64C29/0033 , B64C11/06 , B64C27/35 , F16C17/10 , F16C33/06 , F16C2326/43
Abstract: A proprotor system for a tiltrotor aircraft having helicopter and airplane flight modes includes a yoke having a plurality of blade arms each having an inboard pocket with an outboard surface. Each of a plurality of bearing assemblies is disposed at least partially within one of the inboard pockets with each bearing assembly including a shear bearing and a centrifugal force bearing having an integral shoe with an outboard surface. Each of a plurality of inboard beams is disposed at least partially between one of the centrifugal force bearings and one of the shear bearings. Each of a plurality of proprotor blades is coupled to one of the inboard beams. The integral shoes are coupled to the yoke such that there is a spaced apart relationship between the outboard surfaces of the integral shoes and the outboard surfaces of the pockets to prevent centrifugal force load transfer therebetween.
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公开(公告)号：US10569867B2
公开(公告)日：2020-02-25
申请号：US16100499
申请日：2018-08-10
Applicant: Bell Helicopter Textron Inc.
Inventor： Andrew Maresh , Frank Bradley Stamps , Patrick Ryan Tisdale , Robert Patrick Wardlaw , Andrew Haldeman , Drew Alan Sutton
Abstract: A hub system comprises at least one yoke, at least one shear bearing, and at least one mast adapter. The at least one mast adapter is configured to support the at least one yoke and the at least one shear bearing, and the at least one yoke has a flapping hinge that is non-coincident with a flapping hinge of the at least one shear bearing. Another hub system comprises a stacked yoke and a mast adapter. The mast adapter is configured to transfer rotation from a rotor mast to the hub system to rotate the hub system about a central axis of rotation. The mast adapter is further configured to support the stacked yoke such that each yoke in the stacked yoke is configured to accommodate at least some amount of rotation about an axis that is perpendicular to or about perpendicular to the central axis of rotation.
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公开(公告)号：US20180172568A1
公开(公告)日：2018-06-21
申请号：US15379808
申请日：2016-12-15
Applicant: Bell Helicopter Textron Inc.
Inventor： Bogdan Roman Krasnowski , Xiaoming Li , Chyau Tzeng , Robert Patrick Wardlaw , Robert Arnold Brack
CPC classification number: G01N3/20 , G01N3/02 , G01N3/04 , G01N3/24 , G01N33/00 , G01N2033/0003 , G01N2203/0003 , G01N2203/0005 , G01N2203/001 , G01N2203/0023 , G01N2203/0062 , G01N2203/0252 , G01N2203/0266 , G01N2203/0282
Abstract: A method for determining a shear property of a sample includes supporting a sample at three or more separate support locations about a periphery of a first surface of the sample in a testing fixture, the sample including a second surface separated from the first surface by a thickness, wherein the sample is axisymmetric about an axis that is orthogonal to the first surface. The method includes applying a load on the second surface of the sample with a load applicator in a direction substantially parallel with the axis, measuring, with a controller, shear testing data of the sample in response to applying the load, and determining, with the controller, a shear property of the sample from the measured shear testing data.
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公开(公告)号：US10408723B2
公开(公告)日：2019-09-10
申请号：US15379808
申请日：2016-12-15
Applicant: Bell Helicopter Textron Inc.
Inventor： Bogdan Roman Krasnowski , Xiaoming Li , Chyau Tzeng , Robert Patrick Wardlaw , Robert Arnold Brack
Abstract: A method for determining a shear property of a sample includes supporting a sample at three or more separate support locations about a periphery of a first surface of the sample in a testing fixture, the sample including a second surface separated from the first surface by a thickness, wherein the sample is axisymmetric about an axis that is orthogonal to the first surface. The method includes applying a load on the second surface of the sample with a load applicator in a direction substantially parallel with the axis, measuring, with a controller, shear testing data of the sample in response to applying the load, and determining, with the controller, a shear property of the sample from the measured shear testing data.
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Patent Agency Ranking
公开(公告)号：US20190016458A1
公开(公告)日：2019-01-17
申请号：US15990625
申请日：2018-05-26
Applicant: Bell Helicopter Textron Inc.
Inventor： Amarjit Olenchery Kizhakkepat , Robert Patrick Wardlaw , John Richard McCullough , Frank Bradley Stamps , Tyler Wayne Baldwin
Abstract: A proprotor system for a tiltrotor aircraft having helicopter and airplane flight modes includes a yoke having a plurality of blade arms each having an inboard pocket. Each of a plurality of bearing assemblies is disposed at least partially within one of the inboard pockets with each bearing assembly including a bearing cage, a shear bearing and a centrifugal force bearing. Each of a plurality of inboard beams is disposed at least partially between one of the centrifugal force bearings and one of the shear bearings. Each of a plurality of proprotor blades is coupled to one of the inboard beams. Hub bolts couple each of the bearing cages to the yoke such that the hub bolts provide centrifugal force load paths between the bearing assemblies and the yoke inboard of the inboard pockets.
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公开(公告)号：US20180346109A1
公开(公告)日：2018-12-06
申请号：US16100499
申请日：2018-08-10
Applicant: Bell Helicopter Textron Inc.
Inventor： Andrew Maresh , Frank Bradley Stamps , Patrick Ryan Tisdale , Robert Patrick Wardlaw , Andrew Haldeman , Drew Alan Sutton
Abstract: A hub system comprises at least one yoke, at least one shear bearing, and at least one mast adapter. The at least one mast adapter is configured to support the at least one yoke and the at least one shear bearing, and the at least one yoke has a flapping hinge that is non-coincident with a flapping hinge of the at least one shear bearing. Another hub system comprises a stacked yoke and a mast adapter. The mast adapter is configured to transfer rotation from a rotor mast to the hub system to rotate the hub system about a central axis of rotation. The mast adapter is further configured to support the stacked yoke such that each yoke in the stacked yoke is configured to accommodate at least some amount of rotation about an axis that is perpendicular to or about perpendicular to the central axis of rotation.
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公开(公告)号：US20200241566A1
公开(公告)日：2020-07-30
申请号：US16257651
申请日：2019-01-25
Applicant: Bell Helicopter Textron Inc.
Inventor： Yann Lavallee , Eric Albert Sinusas , Robert Patrick Wardlaw
Abstract: A yaw control system for a rotorcraft featuring a floor mounted pair of pedals configured to measure an up and down motion of a pair of pedals and utilize that up and down motion as a yaw moment control input. The pair of pedals can rock laterally, fore and aft, or vertically. The pair of pedals can be mechanically interconnected to other pairs of pedals or electrically interconnected to duplicate motion across pairs of pedals.
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公开(公告)号：US10479497B2
公开(公告)日：2019-11-19
申请号：US15990624
申请日：2018-05-26
Applicant: Bell Helicopter Textron Inc.
Inventor： Robert Patrick Wardlaw , John Richard McCullough , Amarjit Olenchery Kizhakkepat , Tyler Wayne Baldwin
Abstract: A proprotor system for a tiltrotor aircraft having helicopter and airplane flight modes includes a yoke having a plurality of blade arms each having an inboard pocket with an outboard surface. Each of a plurality of bearing assemblies is disposed at least partially within one of the inboard pockets with each bearing assembly including a shear bearing and a centrifugal force bearing having an integral shoe with an outboard surface. Each of a plurality of inboard beams is disposed at least partially between one of the centrifugal force bearings and one of the shear bearings. Each of a plurality of proprotor blades is coupled to one of the inboard beams. The integral shoes are coupled to the yoke such that there is a spaced apart relationship between the outboard surfaces of the integral shoes and the outboard surfaces of the pockets to prevent centrifugal force load transfer therebetween.
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公开(公告)号：US10086934B2
公开(公告)日：2018-10-02
申请号：US15362424
申请日：2016-11-28
Applicant: Bell Helicopter Textron Inc.
Inventor： Andrew Maresh , Frank Bradley Stamps , Patrick Ryan Tisdale , Robert Patrick Wardlaw , Andrew Haldeman , Drew Alan Sutton
Abstract: A hub system comprises at least one yoke, at least one shear bearing, and at least one mast adapter. The at least one mast adapter is configured to support the at least one yoke and the at least one shear bearing, and the at least one yoke has a flapping hinge that is non-coincident with a flapping hinge of the at least one shear bearing. Another hub system comprises a stacked yoke and a mast adapter. The mast adapter is configured to transfer rotation from a rotor mast to the hub system to rotate the hub system about a central axis of rotation. The mast adapter is further configured to support the stacked yoke such that each yoke in the stacked yoke is configured to accommodate at least some amount of rotation about an axis that is perpendicular to or about perpendicular to the central axis of rotation.
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