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    • 1. 发明申请
    • FLEX BEAM CLAMP FOR ROTOR ASSEMBLY
    • 用于转子总成的FLEX光束夹
    • WO2015200757A1
    • 2015-12-30
    • PCT/US2015/037895
    • 2015-06-26
    • SIKORSKY AIRCRAFT CORPORATION
    • NUSSENBLATT, Eric LucienHUNTER, David H.THOMAS, Justin
    • B64C27/473
    • B64C27/33B64C27/10B64C27/14B64C27/48
    • A rotor assembly for a rotary wing aircraft includes a rotor hub having a central axis, the rotor hub rotatable about the central axis. A plurality of flexible structural members extend radially outwardly from the rotor hub, each flexible structural member substantially U-shaped and having a first arm extending from the hub, a second arm extending from the hub, and an end portion connecting the first arm to the second arm at a radially outboard end of the flexible structural member. A clamp member is positioned between the first arm and the second arm of each structural member and secured thereto to tie deflection of the first arm to deflection of the second arm. A rotor blade is secured to each flexible structural member of the plurality of flexible structural members via the clamp member.
    • 用于旋转飞行器飞行器的转子组件包括具有中心轴线的转子轮毂,该转子轮毂可围绕中心轴线旋转。 多个柔性结构构件从转子毂径向向外延伸,每个柔性结构构件基本上为U形,并具有从毂延伸的第一臂,从轮毂延伸的第二臂和将第一臂连接到 第二臂在柔性结构构件的径向外侧端部。 夹紧构件定位在每个结构构件的第一臂和第二臂之间并固定到其上以使第一臂的偏转与第二臂的偏转相一致。 转子叶片通过夹紧件固定到多个柔性结构件的每个柔性结构件上。
    • 2. 发明申请
    • STRESS REDUCING HOLES
    • 应力减少
    • WO2017048683A1
    • 2017-03-23
    • PCT/US2016/051459
    • 2016-09-13
    • SIKORSKY AIRCRAFT CORPORATION
    • KOPANSKI, KrzystofTHOMAS, Justin
    • B63H1/26B64C27/473F01D5/14
    • B64C27/473
    • A blade includes a blade body having a surface and a hole extending through the surface of the blade body. The hole defines a hole axis and a plane perpendicular to the hole axis. The hole has an elongated hole perimeter within the plane. The hole perimeter includes a plurality of non-linear perimeter sections to minimize stress concentration around the elongated hole perimeter while maximizing the usable opening area. A rotor system includes a rotor hub and a blade as recited above. The blade extends radially outward from the rotor hub. The blade defines a root end proximate to the rotor hub, a tip end opposite the root end.
    • 叶片包括具有延伸穿过叶片本体表面的表面和孔的叶片体。 孔定义孔轴线和垂直于孔轴线的平面。 该孔在平面内具有细长的孔周长。 孔周边包括多个非线性周边部分,以最大化可用开口面积来最小化围绕细长孔周边的应力集中。 转子系统包括如上所述的转子毂和叶片。 叶片从转子毂径向向外延伸。 叶片限定靠近转子毂的根部端,与根端相对的尖端。