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公开(公告)号：US10773798B2
公开(公告)日：2020-09-15
申请号：US15720626
申请日：2017-09-29
Applicant: Bell Helicopter Textron Inc.
Inventor： Andrew Paul Haldeman , Dalton T. Hampton , Bryan Marshall , Frank Bradley Stamps
Abstract: An aircraft rotor assembly has a yoke and a plurality of rotor blade assemblies coupled thereto. Each of the rotor blade assemblies include a rotor blade, a bearing, and a blade grip coupling the rotor blade to the bearing. Each of the rotor blades is rotatable about a lead-lag axis, flap axis, and a pitch change axis, wherein all the axes intersect within the bearing. Adjacent pairs of rotor blade assemblies are coupled together via a damper assembly that is coupled to the pitch change axis of each of the rotor blade assemblies.
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公开(公告)号：US20190329878A1
公开(公告)日：2019-10-31
申请号：US15967220
申请日：2018-04-30
Applicant: Bell Helicopter Textron Inc.
Inventor： Andrew Paul Haldeman , Zachary Edwin Dailey , Charles Owen Black , Dalton T. Hampton , Aaron Alexander Acee
Abstract: A transmission tilt control device includes a transmission rotatably coupled to an airframe of a helicopter, a rotor mast coupled to the transmission, and an actuator coupled between the transmission and the airframe. The actuator being configured to rotate the transmission fore and aft about a tilt axis that is perpendicular to an axis of rotation of the rotor mast.
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公开(公告)号：US20190112041A1
公开(公告)日：2019-04-18
申请号：US15787093
申请日：2017-10-18
Applicant: Bell Helicopter Textron Inc.
Inventor： Andrew Paul Haldeman , Dalton T. Hampton , Frank Bradley Stamps , John Lloyd , Gilberto Morales
Abstract: A rotor assembly has a composite driveshaft extending between a transmission and a yoke for providing torque from the transmission to the yoke to cause rotation of the yoke and a plurality of rotor blade assemblies attached thereto. The rotor hub also has a composite static mast coupled to the yoke and a frame. The static mast being configured to carry the lift and thrust forces from the yoke to the frame.
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公开(公告)号：US11027465B2
公开(公告)日：2021-06-08
申请号：US16141127
申请日：2018-09-25
Applicant: Bell Helicopter Textron Inc.
Inventor： James A. Cordell , Suvankar Mishra , Andrew Paul Haldeman , Jesse J. Wrabel , Dalton T. Hampton
Abstract: A method is provided in one example embodiment and may include positioning at least one nozzle within a hollow portion of a rotor blade at a distance associated with a span of the rotor blade and providing, via the at least one nozzle, a liquid foam mixture in the hollow portion, wherein the liquid foam expands and becomes a solid foam material that fills the hollow portion of the rotor blade. Another method is provided in another example embodiment and may include providing a plurality of openings for a rotor blade that are positioned proximate to a hollow portion of the rotor blade and providing a liquid foam mixture in the hollow portion of the rotor blade through at least one opening of the rotor blade, wherein the liquid foam mixture expands and becomes a solid foam material that fills the hollow portion of the rotor blade.
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Patent Agency Ranking
公开(公告)号：US10940944B2
公开(公告)日：2021-03-09
申请号：US15967220
申请日：2018-04-30
Applicant: Bell Helicopter Textron Inc.
Inventor： Andrew Paul Haldeman , Zachary Edwin Dailey , Charles Owen Black , Dalton T. Hampton , Aaron Alexander Acee
Abstract: A transmission tilt control device includes a transmission rotatably coupled to an airframe of a helicopter, a rotor mast coupled to the transmission, and an actuator coupled between the transmission and the airframe. The actuator being configured to rotate the transmission fore and aft about a tilt axis that is perpendicular to an axis of rotation of the rotor mast.
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公开(公告)号：US10752349B2
公开(公告)日：2020-08-25
申请号：US16173064
申请日：2018-10-29
Applicant: Bell Helicopter Textron Inc.
Abstract: An exemplary rotorcraft includes a power train with an engine coupled to a gearbox, a main rotor blade having a mast coupled to the power train, a control input linkage in communication between a pilot input device and the main rotor blade configured to communicate a control input force from the pilot input device to the main rotor blade, and a counterweight system in connection with the control input linkage and the power train to apply a centrifugal force to the control input linkage.
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公开(公告)号：US10752346B2
公开(公告)日：2020-08-25
申请号：US15787093
申请日：2017-10-18
Applicant: Bell Helicopter Textron Inc.
Inventor： Andrew Paul Haldeman , Dalton T. Hampton , Frank Bradley Stamps , John Lloyd , Gilberto Morales
Abstract: A rotor assembly has a composite driveshaft extending between a transmission and a yoke for providing torque from the transmission to the yoke to cause rotation of the yoke and a plurality of rotor blade assemblies attached thereto. The rotor hub also has a composite static mast coupled to the yoke and a frame. The static mast being configured to carry the lift and thrust forces from the yoke to the frame.
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公开(公告)号：US10550907B2
公开(公告)日：2020-02-04
申请号：US15240797
申请日：2016-08-18
Applicant: Bell Helicopter Textron, Inc.
Abstract: A liquid inertia vibration elimination (LIVE) system having an upper end cap, a lower end cap, a spindle located between the upper end cap and the lower end cap, and an external tube connected between the upper end cap and the lower end cap.
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公开(公告)号：US20180051765A1
公开(公告)日：2018-02-22
申请号：US15240797
申请日：2016-08-18
Applicant: Bell Helicopter Textron, Inc.
Abstract: A liquid inertia vibration elimination (LIVE) system having an upper end cap, a lower end cap, a spindle located between the upper end cap and the lower end cap, and an external tube connected between the upper end cap and the lower end cap.
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