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    • 1. 发明授权
    • Aircraft rotor with discrete flap hinge
    • 具有离散翼片铰链的飞机转子
    • US09352830B2
    • 2016-05-31
    • US13455814
    • 2012-04-25
    • Frank B. StampsDavid A. PopelkaTom DonovanPatrick R. TisdaleRichard E. Rauber
    • Frank B. StampsDavid A. PopelkaTom DonovanPatrick R. TisdaleRichard E. Rauber
    • B64C27/39B64C27/48
    • B64C27/39B64C27/48
    • An aircraft rotor assembly has upper and lower hub plates adapted to be mounted to a central rotor mast for rotation therewith. A plurality of radial arms is connected to at least two flap bearings mounted between the hub plates and forming a discrete flap hinge, each flap hinge defining a flap axis and allowing rotation of the associated arm relative to the hub plates and about the corresponding flap axis. Each of a plurality of blade grips is rotatably connected to one of the arms for rotation about a pitch axis and adapted for mounting of a blade to each blade grip, such that each blade is capable of rotation with the grip about the pitch axis and capable of rotation together with the corresponding arm relative to the hub plates and about the corresponding flap axis.
    • 飞机转子组件具有适于安装到中心转子桅杆上的上和下毂板,以与其一起旋转。 多个径向臂连接到安装在轮毂板之间并形成离散的翼片铰链的至少两个翼片轴承,每个翼片铰链限定翼片轴线并允许相关联的臂相对于轮毂板和相应翼片轴线的旋转 。 多个叶片夹具中的每一个可旋转地连接到一个臂上,用于围绕俯仰轴线旋转,并适于将叶片安装到每个叶片手柄上,使得每个叶片能够围绕俯仰轴线旋转,并且能够 与相应的臂相对于轮毂板和围绕相应的翼片轴线旋转。
    • 9. 发明授权
    • Nodalized rotor
    • 节点转子
    • US4601639A
    • 1986-07-22
    • US590987
    • 1984-03-19
    • Jing G. YenDavid A. Popelka
    • Jing G. YenDavid A. Popelka
    • B64C27/51B64C27/33B64C27/473B64C27/46
    • B64C27/33B64C27/473
    • A nodalized rotor system is provided for a multi-bladed helicopter. Equally spaced radial arms each have an inboard flapping section to accommodate beam-wise blade flapping and an outboard flex section to accommodate pitch changes. A blade is coupled to the end of each arm with a cuff and pitch horn rigidly connected to the blade and pivotally connected to its arm in the region of the flapping section. The blade has a concentration of weight over the section of blade extending from about 32% to 42% of the hub-blade radius of running weight four times the running weight at 50% of the hub-blade radius. Said blade has a reduced mass at outboard 30% of the hub-blade radius, at a level of 80% of the running weight at 50% of the hub-blade radius.
    • 为多叶直升机提供了一个节点转子系统。 同样间隔的径向臂各具有内侧振荡部分,以适应束流式叶片拍动和外侧弯曲部分以适应间距变化。 刀片连接到每个臂的端部,其中袖带和节距角刚性地连接到刀片并且在拍动部分的区域中枢转地连接到其臂。 叶片的重量比在叶片截面上的重量的重量从轮毂叶片半径的50%处的行进重量的四倍的轮毂叶片半径的大约32%到42%的四倍。 所述叶片在轮毂叶片半径的30%处具有减小的质量,在轮毂叶片半径的50%处的运动重量的80%的水平。
    • 10. 发明授权
    • Dual series damper system
    • 双系列阻尼器系统
    • US09481455B2
    • 2016-11-01
    • US13703650
    • 2011-04-26
    • Mithat YuceDavid A. PopelkaFrank B. StampsMark A. Wiinikka
    • Mithat YuceDavid A. PopelkaFrank B. StampsMark A. Wiinikka
    • B64C27/51F16F13/06
    • B64C27/51F16F13/06
    • A dual series damper includes a fluid damper portion and a elastomeric damper portion. The fluid damper portion includes a first housing, a first connection member, and a piston coupled to the first connection member. The piston divides an interior of the first housing into a first fluid chamber and a second fluid chamber. The piston has a fluid passage in the piston, the fluid passage being configured to provide fluid communication between the first fluid chamber and the second fluid chamber. The elastomeric damper portion includes a second housing, a second connection member coupled to the second housing, and an elastomer between the first housing and the second housing. When a lead/lag force is introduced to the dual series damper, the fluid damper portion behaves rigidly so that the elastomeric damper portion dampens the lead/lag oscillation.
    • 双串联阻尼器包括流体阻尼器部分和弹性阻尼器部分。 流体阻尼器部分包括第一壳体,第一连接构件和联接到第一连接构件的活塞。 活塞将第一壳体的内部分成第一流体室和第二流体室。 活塞在活塞中具有流体通道,流体通道构造成在第一流体室和第二流体室之间提供流体连通。 弹性阻尼器部分包括第二壳体,联接到第二壳体的第二连接构件和在第一壳体和第二壳体之间的弹性体。 当引入/滞后力被引入双串联阻尼器时,流体阻尼器部分刚性地运动,使得弹性阻尼器部分阻尼引导/滞后振荡。