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1. 发明授权

US6050778A Semi-articulated rotor system 有权
标题翻译：半铰接转子系统
公开(公告)号：US6050778A
公开(公告)日：2000-04-18
申请号：US160449
申请日：1998-09-24
申请人： Francis H. McArdle , Thomas W. Griffith, Sr. , George H. Thompson , John H. Peck , Helene G. McArdle
发明人： Francis H. McArdle , Thomas W. Griffith, Sr. , George H. Thompson , John H. Peck , Helene G. McArdle
IPC分类号： B64C27/32 , B64C27/35 , B64C27/45 , B64C27/51
CPC分类号： B64C27/35 , B64C27/32 , B64C27/45 , Y10T29/49321 , Y10T29/4987
摘要： A semi-articulated stiff-in-plane (SASTIP) rotor hub is provided. The hub includes a cylindrical composite shell (12). A plurality of flexure mount assemblies (16) are positioned around the periphery of the hub shell. Each flexure mount assembly includes both an upper and a lower flexure (64), (66). The outboard ends of the upper and lower flexures attach to an outboard bearing support (34). The inboard end of each flexure is maintained within first and second clamp plates (76), (78) that are mounted within hub flexure openings (38), (40). The flexure clamp plates (76), (78) additionally attach circumferentially to annular CF rings (24), (26), (28), (30) positioned within the hub shell. A blade shaft (14) extends through the outboard bearing (72) and connects to a spindle. The spindle is supported by a spherical bearing that is mounted within the hub shell (12) at a circular spindle hole. The structural characteristics of each of the flexures are tailored to achieve desired differential spring rates to control both flapping and lead-lag displacements of the respective blades, as well as natural frequencies of the rotor.
摘要翻译：提供了一种半铰接式刚性平面（SASTIP）转子毂。轮毂包括圆柱形复合壳（12）。多个弯曲安装组件（16）围绕轮毂壳的周边定位。每个弯曲安装组件都包括上部和下部挠曲件（64）（66）。上部和下部挠曲件的外侧端部附接到外侧轴承支撑件（34）。每个挠曲件的内侧端部保持在安装在轮毂弯曲开口（38），（40）内的第一和第二夹板（76）（78）内。弯曲夹板（76）（78）还附加地附接到定位在轮毂壳内的环形CF环（24），（26），（28），（30）。叶片轴（14）延伸穿过外侧轴承（72）并连接到主轴。主轴由球形轴承支撑，该球面轴承以圆心轴孔安装在轮毂壳体（12）内。每个挠性件的结构特征被定制以实现期望的差速弹簧刚度，以控制各个叶片的振荡和前后延迟位移以及转子的固有频率。

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