Coaxial transmission/center hub subassembly for a rotor assembly having
ducted, coaxial counter-rotating rotors
    11.
    发明授权
    Coaxial transmission/center hub subassembly for a rotor assembly having ducted, coaxial counter-rotating rotors 失效
    用于转子组件的同轴传动/中心毂子组件,其具有导管的,同轴的反向转动的转子

    公开(公告)号:US5351913A

    公开(公告)日:1994-10-04

    申请号:US903065

    申请日:1992-06-22

    Abstract: One embodiment of a coaxial transmission/center hub subassembly for a rotor assembly having ducted, coaxial counter-rotating rotors includes a single stage transmission, a transmission housing, and a center hub support structure that are structurally and functionally interactive. The transmission housing includes upper and lower standpipe housings secured in combination with a middle housing. The single stage transmission includes an input pinion gear rotatably mounted in combination with the middle housing, and upper and lower spiral bevel gears rotatably coupled in combination with the input pinion gear to provide counter-rotation thereof. The spiral bevel gears include integral rotor shafts, respectively, rotatably mounted in the standpipe housings. The hub support structure is configured for securement of the middle housing internally in combination therewith, with respective surfaces thereof in abutting engagement so that dynamic loads of the rotors and thermal loads are directly coupled into the hub support structure via the middle housing while bending moments of the rotors are canceled in the middle housing. The hub support structure has radially extending arms for mounting the coaxial transmission/center hub subassembly in fixed coaxial relation to an airframe structure and for coupling the dynamic and thermal loads to the airframe structure. External surfaces of the standpipe housings function as sliding surfaces for linear motion of swashplate subassemblies to minimize the separation between the rotors so that the airframe structure has a compact aerodynamic and structural envelope. The transmission housing is internally configured to provide a splash lubrication subsystem.

    Abstract translation: 具有导管的同轴反转转子的转子组件的同轴传动/中心毂子组件的一个实施例包括在结构和功能上相互作用的单级传动装置,变速器壳体和中心轮毂支撑结构。 变速器壳体包括与中间壳体组合固定的上下立管壳体。 单级变速器包括与中间壳体可旋转地安装的输入小齿轮,以及与输入小齿轮可旋转地联接以提供反向转动的上下螺旋锥齿轮。 螺旋锥齿轮分别包括可旋转地安装在立管壳体中的整体转子轴。 轮毂支撑结构构造成用于将中间壳体与内部固定在一起,其相应的表面相互接合,使得转子和热负载的动态载荷通过中间壳体直接联接到轮毂支撑结构中,同时弯曲力矩 转子在中间房屋被取消。 轮毂支撑结构具有径向延伸臂,用于将同轴传动/中心轮毂子组件安装成与机身结构固定的同轴关系,并将动态和热负载耦合到机体结构。 立管外壳的外表面用作滑动表面,用于旋转斜盘组件的直线运动,以最小化转子之间的间隔,使机身结构具有紧凑的空气动力学和结构范围。 变速器壳体内部配置为提供飞溅润滑子系统。

    Rotor blade construction for circulation control aircraft
    14.
    发明授权
    Rotor blade construction for circulation control aircraft 失效
    用于循环控制飞机的转子叶片结构

    公开(公告)号:US4770607A

    公开(公告)日:1988-09-13

    申请号:US43058

    申请日:1987-04-27

    Abstract: A circulation control aircraft rotor blade of advanced composite material having a spanwise Coanda surface 16 and a plurality of spanwise extending flexible panels 18 cooperating with the Coanda surface to define slots for the discharge of compressed air from a duct 14 within the blade with each panel having flexure means 34 associated with attaching means 24 and limiting means 38 for establishing a slot opening preload and a slot maximum opening and with limiting means 38 providing structural equilibrium and reduced bending moments in the inboard corners of the air duct.

    Abstract translation: 具有先导复合材料的循环控制飞机转子叶片,其具有翼展方向柯恩达表面16和多个翼展方向延伸的柔性板18,其与柯恩达表面协作以限定用于从叶片内的管道14排出压缩空气的狭槽,每个板具有 与安装装置24相关联的挠曲装置34和用于建立开槽预加载槽和槽最大开口的限制装置38,以及限制装置38,其提供空气管道的内侧角落中的结构平衡和减小的弯矩。

    Snubber assembly for a rotor assembly having ducted, coaxial
counter-rotating rotors
    15.
    发明授权
    Snubber assembly for a rotor assembly having ducted, coaxial counter-rotating rotors 失效
    用于转子组件的缓冲组件,其具有导管的同轴反转转子

    公开(公告)号:US5340279A

    公开(公告)日:1994-08-23

    申请号:US903063

    申请日:1992-06-22

    Abstract: A snubber assembly for a rotor assembly having ducted, coaxial counter-rotating rotors that is design optimized to facilitate utilization of a self-aligning bearing and for installation inboard of the corresponding flexbeam-to-rotor hub attachment joint, thereby enhancing accessibility and reducing maintenance costs. The rotor hub of the rotor assembly is design optimized for securing the snubber assembly in combination therewith and includes a plurality of arms, each arm forming an outboard clevis for attaching the rotor assembly flexbeam to the rotor hub. Inboard of the clevis, each rotor hub arm includes an outboard internal bulkhead having a bolt hole therethrough and an inboard internal bulkhead having a bolt hole therethrough. The inboard and outboard internal bulkheads in combination define a bearing cavity and an internal cavity for securing the snubber assembly in combination with the rotor hub. The snubber assembly includes a spherical self-aligning bearing, a bearing bolt, a locking nut, a snubber bracket secured in combination with the spherical bearing, and securing bolts. The spherical bearing, snubber bracket combination is rotatably mounted within the bearing cavity utilizing the bearing bolt. The bearing bolt is secured in combination with the rotor hub utilizing the locking nut, which is threaded onto the bearing bolt in the internal cavity to jam against the inboard internal bulkhead. The securing bolts are utilized to secure the snubber bracket in combination with the corresponding integrated torque tube/spar member of the rotor assembly.

    Abstract translation: 一种用于转子组件的缓冲组件,其具有导管同轴的反向旋转转子,其设计优化以便于利用自对准轴承并安装在对应的挠性梁至转子轮毂附接接头的内侧,从而增强可接近性并减少维护 费用 转子组件的转子轮毂被设计为优化用于将缓冲器组件与其组合固定并且包括多个臂,每个臂形成用于将转子组件挠性束附接到转子毂的外侧U形夹。 在U形夹的内侧,每个转子轮毂臂包括具有穿过其中的螺栓孔的外侧内部隔板和具有穿过其中的螺栓孔的内侧内部隔板。 内侧和外侧的内部舱壁组合地限定了轴承腔和用于将缓冲器组件与转子毂组合固定的内部空腔。 缓冲组件包括球形自调心轴承,轴承螺栓,锁紧螺母,与球面轴承组合固定的缓冲支架和固定螺栓。 球轴承,缓冲支架组合使用轴承螺栓可旋转地安装在轴承腔内。 轴承螺栓利用锁定螺母与转子毂组合固定,该锁定螺母被拧到内部空腔中的轴承螺栓上以卡在内侧内部舱壁上。 紧固螺栓用于将缓冲支架与转子组件的相应的集成扭矩管/翼梁构件组合固定。

    Composite flexbeam joint
    16.
    发明授权
    Composite flexbeam joint 失效
    复合弹性接头

    公开(公告)号:US4466774A

    公开(公告)日:1984-08-21

    申请号:US413029

    申请日:1982-08-30

    CPC classification number: B64C27/33 B64C27/32

    Abstract: A helicopter rotor system using composite flexbeams for connecting a rotor blade to the rotor hub, each flexbeam being of C-section and having a web section made up of 0.degree. and .+-.45.degree. plies and top and bottom flanges made up of low angle plies in the direction of their length with their ends being connected by an arc of plies so that the top and bottom flange plies are continuous with an attachment fitting encased at the ends of the flexbeams.

    Abstract translation: 一种直升机转子系统,使用复合柔性梁将转子叶片连接到转子轮毂上,每个柔性梁为C形截面,并具有由0°和+/- 45°层组成的腹板部分,顶部和底部凸缘由低 角度在它们的长度方向上,其端部通过一层叠层连接,使得顶部和底部凸缘层与包围在柔性梁的端部的附接配件连续。

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