Aperiodic struts for enhanced blade responses
    2.
    发明授权
    Aperiodic struts for enhanced blade responses 失效
    非周期支柱用于增强叶片响应

    公开(公告)号:US06789998B2

    公开(公告)日:2004-09-14

    申请号:US10236791

    申请日:2002-09-06

    IPC分类号: F01D2504

    摘要: A system and method for reducing blade strain on the fan blades of an air cycle machine is proposed. The method involves a strut arrangement that is positioned in a cylindrical air passage upstream from the fan assembly. The strut arrangement includes at least three struts, wherein the at least three struts are separated by unequal degrees of separation along the circumference of the air passage. The strut arrangement effectively reduces the strain on the blades of the fan assembly.

    摘要翻译: 提出了一种用于减少空气循环机风扇叶片上的叶片应变的系统和方法。 该方法涉及一种支柱装置,其布置在风扇组件上游的圆柱形空气通道中。 支柱布置包括至少三个支柱,其中至少三个支柱沿着空气通道的圆周由不相等的分离度分开。 支柱布置有效地减小了风扇组件的叶片上的应变。

    Axial flow turbo-machine fan blade having shifted tip center of gravity
axis
    3.
    发明授权
    Axial flow turbo-machine fan blade having shifted tip center of gravity axis 失效
    轴流涡轮机风扇叶片具有偏移的尖端重心轴线

    公开(公告)号:US6059532A

    公开(公告)日:2000-05-09

    申请号:US82412

    申请日:1998-05-20

    IPC分类号: F04D29/32 B63H1/28

    CPC分类号: F04D29/324

    摘要: A high aspect ratio, low solidity fan blade of an axial flow air cycle machine has a local tip center of gravity axis that has been shifted ahead of an elastic axis. The center of gravity axis can be shifted by clipping the tip of the blade at the trailing edge, by undercutting a rear portion of the pressure surface, or by sweeping forward leading and trailing edges of the blade by about five degrees (without clipping or undercutting the blade).

    摘要翻译: 轴向流动空气循环机的高纵横比,低固体风扇叶片具有已经在弹性轴线之前移动的局部尖端重心轴线。 通过削减压力表面的后部,或通过将刀片的前后边缘向前扫掠大约五度(不夹持或下切),可以通过在叶片的后缘处削尖叶片的尖端来移动重心轴线 刀片)。