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公开(公告)号：US10759530B2
公开(公告)日：2020-09-01
申请号：US16172326
申请日：2018-10-26
Applicant: BELL HELICOPTER TEXTRON INC.
Inventor： David E. Heverly, II , Frank B. Stamps , Michael Smith
IPC: B64C27/635 , B64C27/51
Abstract: A rotor system includes a hub assembly, a first, second, and third rotor blade rotatably attached to the hub assembly, a first, second, and third damper pivotally attached to the hub assembly and pivotally attached to the first, second, and third rotor blade, respectively, and a control system operably associated with the first, second, and third damper. A method to control vibratory forces exerted on the hub assembly via the first and second rotor blade includes separately controlling a dynamic spring rate of each of the first and second dampers with the control system.
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公开(公告)号：US20190061931A1
公开(公告)日：2019-02-28
申请号：US16172326
申请日：2018-10-26
Applicant: BELL HELICOPTER TEXTRON INC.
Inventor： David E. Heverly, II , Frank B. Stamps , Michael Smith
IPC: B64C27/635 , B64C27/51
CPC classification number: B64C27/635 , B64C27/51
Abstract: A rotor system includes a hub assembly, a first, second, and third rotor blade rotatably attached to the hub assembly, a first, second, and third damper pivotally attached to the hub assembly and pivotally attached to the first, second, and third rotor blade, respectively, and a control system operably associated with the first, second, and third damper. A method to control vibratory forces exerted on the hub assembly via the first and second rotor blade includes separately controlling a dynamic spring rate of each of the first and second dampers with the control system.
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公开(公告)号：US20180111679A1
公开(公告)日：2018-04-26
申请号：US15298693
申请日：2016-10-20
Applicant: Bell Helicopter Textron Inc.
Inventor： David E. Heverly, II
CPC classification number: B64C27/001 , B64C2027/002 , B64C2027/004 , F04C2/102 , F04C14/14 , F04C15/064
Abstract: An oscillating pump system includes a pump operable to circulate a fluid. The pump has a first port stage including an inlet port and an outlet port and a second port stage including a first oscillating port and a second oscillating port. An oscillator disk is disposed between the first port stage and the second port stage. The oscillator disk is rotatable relative to the inlet port, the outlet port, the first oscillating port and the second oscillating port. During rotation, the oscillator disk alternatingly routes the fluid to the inlet port from the first and second oscillating ports and alternatingly routes the fluid from the outlet port to the first and second oscillating ports, thereby generating oscillating fluid flow.
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公开(公告)号：US09745055B2
公开(公告)日：2017-08-29
申请号：US14666574
申请日：2015-03-24
Applicant: Bell Helicopter Textron Inc.
Inventor： David E. Heverly, II , Taeoh Lee , Michael R. Smith , James E. Wright
CPC classification number: B64C27/001 , B64C2027/002 , B64C2027/004 , F16F7/1034 , F16F9/10 , F16F9/504 , F16F2222/08 , F16F2238/04
Abstract: A method of isolating vibrations between vibrating bodies includes determining a pressure differential between a first fluid chamber and a second fluid chamber of a liquid inertia vibration eliminator (LIVE) unit, and selectively injecting fluid into or withdrawing fluid from the LIVE unit based on the pressure differential. A system for isolating vibrations between bodies includes a vibration isolator including fluid, a fluid regulator valve in fluid communication with the vibration isolator to selectively flow fluid through the vibration isolator, a pressurized fluid source in fluid communication with the fluid regulator to supply fluid to the fluid regulator, a controller in signal communication with the fluid regulator to control fluid flow between the fluid regulation valve and the vibration isolator, and at least one sensor in signal communication with the controller.
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公开(公告)号：US20160280363A1
公开(公告)日：2016-09-29
申请号：US14666574
申请日：2015-03-24
Applicant: Bell Helicopter Textron Inc.
Inventor： David E. Heverly, II , Taeoh Lee , Michael R. Smith , James E. Wright
CPC classification number: B64C27/001 , B64C2027/002 , B64C2027/004 , F16F7/1034 , F16F9/10 , F16F9/504 , F16F2222/08 , F16F2238/04
Abstract: A method of isolating vibrations between vibrating bodies includes determining a pressure differential between a first fluid chamber and a second fluid chamber of a liquid inertia vibration eliminator (LIVE) unit, and selectively injecting fluid into or withdrawing fluid from the LIVE unit based on the pressure differential. A system for isolating vibrations between bodies includes a vibration isolator including fluid, a fluid regulator valve in fluid communication with the vibration isolator to selectively flow fluid through the vibration isolator, a pressurized fluid source in fluid communication with the fluid regulator to supply fluid to the fluid regulator, a controller in signal communication with the fluid regulator to control fluid flow between the fluid regulation valve and the vibration isolator, and at least one sensor in signal communication with the controller.
Abstract translation: 隔离振动体之间的振动的方法包括确定液体惯性减振器（LIVE）单元的第一流体室和第二流体室之间的压力差，并且基于压力选择性地将流体从LIVE单元注入流体或从LIVE单元抽出流体 微分。 用于隔离主体之间的振动的系统包括：包括流体的隔振器，与隔振器流体连通的流体调节阀，以选择性地流动通过隔振器的流体;与流体调节器流体连通的加压流体源，以向 流体调节器，与流体调节器信号通信的控制器，以控制流体调节阀和隔振器之间的流体流动，以及与控制器信号通信的至少一个传感器。
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Patent Agency Ranking
公开(公告)号：US20190322361A1
公开(公告)日：2019-10-24
申请号：US15960931
申请日：2018-04-24
Applicant: Bell Helicopter Textron Inc.
Inventor： David E. Heverly, II
Abstract: A method and system to isolate vibrations, including a first pair of fluid chambers disposed to isolate first vibrations between a first body and a second body, wherein the first vibrations are parallel to a first axis, wherein the first body is a propeller hub, a rotor hub, a pylon attachment, or an engine, and wherein the second body is a propeller shaft, a rotor mast, or a body attachment; a second pair of fluid chambers disposed to isolate second vibrations between the first and second bodies, wherein the second vibrations are parallel to a second axis perpendicular to the first axis; first and second inertia tracks disposed to place the first and second pairs of chambers in fluid communication, respectively; and a plurality of elastic energy storage devices coupled to the first body and the second body and disposed to isolate vibrations between the first and second bodies.
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公开(公告)号：US20190154106A1
公开(公告)日：2019-05-23
申请号：US15820129
申请日：2017-11-21
Applicant: Bell Helicopter Textron Inc.
Inventor： David E. Heverly, II
IPC: F16F15/023 , B64C29/00 , B06B1/18
Abstract: In one embodiment, a centrifugal force generating device comprises a first hydraulic rotor, a second hydraulic rotor, and one or more hydraulic control valves. The first hydraulic rotor comprises a first mass and is configured to rotationally drive the first mass around a first axis of rotation using a first flow of hydraulic fluid through the first hydraulic rotor. The second hydraulic rotor comprises a second mass and is configured to rotationally drive the second mass around a second axis of rotation using a second flow of hydraulic fluid through the second hydraulic rotor. The one or more hydraulic control valves are configured to control the first flow of hydraulic fluid through the first hydraulic rotor and the second flow of hydraulic fluid through the second hydraulic rotor.
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公开(公告)号：US10012217B2
公开(公告)日：2018-07-03
申请号：US14717516
申请日：2015-05-20
Applicant: Bell Helicopter Textron Inc.
Inventor： David E. Heverly, II , Taeoh Lee
CPC classification number: F04B1/00 , B64C2027/004 , F04B11/00 , F04B11/005 , F04B53/001 , F16F9/00 , F16F9/46 , F16F13/16
Abstract: A vibration isolation system includes a vibration isolator configured to flow a fluid. A fluid pumping system is connected to the vibration isolator. The fluid pumping system includes a fluid flow pathway configured to flow the fluid to the vibration isolator. The fluid pumping system includes a piston assembly positioned in the fluid flow pathway. The piston assembly includes a first piston and a second piston configured to displace the fluid in opposite directions through the fluid flow pathway. The vibration isolation system includes a fluid flow augmentation system, which includes an eccentric member positioned between the first piston and the second piston. The fluid flow augmentation system is configured to control a flow of the fluid to the vibration isolator through the fluid flow pathway by controlling a displacement of the first piston and the second piston through at least a partial rotation of the eccentric member.
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9.发明申请公开(公告)号：US20150203196A1
公开(公告)日：2015-07-23
申请号：US14600180
申请日：2015-01-20
Applicant: Bell Helicopter Textron Inc.
Inventor： David E. Heverly, II , Jeremy DeWaters , Frank B. Stamps
IPC: B64C27/00
CPC classification number: B64C27/001 , B64C29/0033 , B64C2027/003
Abstract: A vibration control system for a rotor hub provides vibration attenuation in an aircraft by reducing the magnitude of rotor induced vibratory. The system can include a force generating device attached to a rotor hub which rotates along with the rotor at the rotational speed of the rotor. Vibratory shear force is generated by rotating unbalanced weights each about an axis non-concentric with the rotor hub axis at high speed to create large centrifugal forces. The rotational speed of the weights can be a multiple of the rotor rotational speed to create shear forces for canceling rotor induced vibrations. The amplitude of the generated shear force is controlled by indexing the positions of the unbalanced weights relative to each other, while the phase of the shear force is adjusted by equally phasing each weight relative to the rotor.
Abstract translation: 用于转子毂的振动控制系统通过减小转子感应振动的大小来提供飞行器中的振动衰减。 该系统可以包括附接到转子毂的力产生装置，该转子毂在转子的旋转速度下与转子一起旋转。 振动剪切力通过围绕与转子轮毂轴线不同轴的轴线以高速度旋转不平衡的重量而产生，以产生大的离心力。 重量的转速可以是转子转速的倍数，以产生用于抵消转子诱发的振动的剪切力。 所产生的剪切力的振幅通过使不平衡重量相对于彼此的位置分度来控制，而剪切力的相位通过相对于转子的每个重量相等地相位调整。
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公开(公告)号：US10899437B2
公开(公告)日：2021-01-26
申请号：US15960931
申请日：2018-04-24
Applicant: Bell Helicopter Textron Inc.
Inventor： David E. Heverly, II
Abstract: A method and system to isolate vibrations, including a first pair of fluid chambers disposed to isolate first vibrations between a first body and a second body, wherein the first vibrations are parallel to a first axis, wherein the first body is a propeller hub, a rotor hub, a pylon attachment, or an engine, and wherein the second body is a propeller shaft, a rotor mast, or a body attachment; a second pair of fluid chambers disposed to isolate second vibrations between the first and second bodies, wherein the second vibrations are parallel to a second axis perpendicular to the first axis; first and second inertia tracks disposed to place the first and second pairs of chambers in fluid communication, respectively; and a plurality of elastic energy storage devices coupled to the first body and the second body and disposed to isolate vibrations between the first and second bodies.
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