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262 条记录 (耗时 0.02 秒)

    Active propeller system
    1.
    发明授权
    Active propeller system 有权

    公开(公告)号：US12006027B2

    公开(公告)日：2024-06-11

    申请号：US18172370

    申请日：2023-02-22

    申请人： ideaForge Technology Pvt. Ltd.

    发明人： Amey Damjee

    IPC分类号： B64C27/51 ,  B64C27/00 ,  B64U30/20 ,  B64U30/297

    CPC分类号： B64C27/51 ,  B64C27/001 ,  B64U30/20 ,  B64U30/297 ,  B64C2027/003

    摘要： An improved propeller system is disclosed, including at least one resilient component configured with a mounting arrangement of a propeller of the propeller system. The resilient component is made of a resilient material that allows the propeller to tilt about a tethering axis under conditions of differential lift force on blades of the propeller under an advancing condition and a retreating condition. The resilient component includes a pair of cutouts for locating inserts made of a rigid material and positioned with a longitudinal axis of the inserts oriented in radial direction. The orientation of the inserts results in a radially oriented line contact between the propeller and the inserts to ensure that tilting of the propeller is about longitudinal axis of the inserts, defining the tethering axis of the propeller system.

    Self-balancing propeller assembly
    2.
    发明授权
    Self-balancing propeller assembly 有权

    公开(公告)号：US11834166B2

    公开(公告)日：2023-12-05

    申请号：US16758135

    申请日：2018-10-25

    申请人： IDEAFORGE TECHNOLOGY PVT. LTD.

    发明人： Ankit Mehta

    IPC分类号： B64C27/51 ,  F01D5/16 ,  F16F15/36 ,  G01M1/32

    CPC分类号： B64C27/51 ,  F01D5/16 ,  F16F15/36 ,  G01M1/32 ,  F05D2240/30 ,  F05D2260/96

    摘要： A device for self-balancing a rotating part, such as a propeller, along a given axis is disclosed. The propeller 102 coupled to, a drive shaft with freedom for linear movement along longitudinal axis L-L; at least one pair of levers 614/616, comprising a first lever 614-1/616-1 and a second lever 614-2/616-2, that are pivotally mounted on mounting plate 606 at two diametrically opposite points 618; and at least one pair of weights 622 fixed at external ends of the levers 614/616. inner ends of levers 614/616 are operatively coupled to the propeller 102 such that when propeller 102 undergoes a linear movement in any direction along the longitudinal, axis L-L due to unbalance, inner ends of levers are, moved to cause the weights 622 to move to provide a balancing force to neutralize the unbalance in the propeller. An embodiment with only one pair of levers is also disclosed.

    Rotor blade lead-lag hydraulic damper with centrifugal force compensating damping characteristics
    3.
    发明授权
    Rotor blade lead-lag hydraulic damper with centrifugal force compensating damping characteristics 有权

    公开(公告)号：US11697492B2

    公开(公告)日：2023-07-11

    申请号：US17225763

    申请日：2021-04-08

    申请人： Roller Bearing Company of America, Inc.

    发明人： Mark Alger ,  Randall Kohuth ,  Dean Campbell

    IPC分类号： B64C27/51

    CPC分类号： B64C27/51

    摘要： A piston assembly for a lead-lag damper for a blade mounted on a rotor of a helicopter includes a piston-rod that has an inside surface and a piston-head that extends radially outward therefrom. The piston-rod has two ports extending therethrough on opposing sides of the piston-head. A sleeve is positioned in the piston-rod and has two annular passages that communicate with the respective ports. A valve spool is disposed in and slidingly engages the sleeve. The valve spool has a channel which is in variable fluid communication with two passages. The piston assembly includes a biasing member that biases the valve spool axially away from it. The channel has an axial width configured to variably regulate fluid flow between the two ports to control dampening of the piston-rod in response to centrifugal forces applied to the valve spool.

    BLADE DAMPER WITH A MAGNETIC CONTAMINANTS TRAP
    5.
    发明申请
    BLADE DAMPER WITH A MAGNETIC CONTAMINANTS TRAP 审中-公开

    公开(公告)号：US20180229836A1

    公开(公告)日：2018-08-16

    申请号：US15516442

    申请日：2015-08-03

    申请人： Sikorsky Aircraft Corporation

    发明人： Adrial Kirchen ,  James Orbon

    IPC分类号： B64C27/51 ,  B64C27/635 ,  B03C1/30

    CPC分类号： B64C27/51 ,  B03C1/30 ,  B64C27/635

    摘要： A blade damper with a magnetic contaminants trap includes, a housing defining a cavity, a piston in operable communication with the housing dividing the cavity into at least a first chamber and a second chamber, a passageway in operable communication with the cavity configured to allow fluid within the cavity to move between the first chamber and the second chamber through the passageway, and at least one magnet in operable communication with fluid in at least one of the cavity and the passageway, such that magnetic contaminants are prevented from freely moving about within the fluid after having been attracted toward the at least one magnet by a magnetic field of the at least one magnet.