Methods and apparatus for reducing vibrations induced to compressor airfoils
    1.
    发明授权
    Methods and apparatus for reducing vibrations induced to compressor airfoils 有权
    减少压缩机翼型振动的方法和装置

    公开(公告)号:US06905309B2

    公开(公告)日:2005-06-14

    申请号:US10650288

    申请日:2003-08-28

    摘要: A method enables a rotor blade for a gas turbine engine to be fabricated. The method comprises forming an airfoil including a first side wall and a second side wall that each extend in radial span between an airfoil root and an airfoil tip, and wherein the first and second side walls are connected at a leading edge and at a trailing edge, and forming a winglet that extends outwardly from at least one of the airfoil first side wall and the airfoil second side wall, such that a radius extends between the winglet and at least one of the airfoil first side wall and the second side wall.

    摘要翻译: 一种方法能够制造用于燃气涡轮发动机的转子叶片。 该方法包括形成包括第一侧壁和第二侧壁的翼型件,每个翼型件在翼型件根部和翼型件顶端之间沿径向跨度延伸,并且其中第一和第二侧壁在前缘和后缘连接 并且形成从所述翼型件第一侧壁和所述翼型件第二侧壁中的至少一个向外延伸的小翼,使得所述翼片与所述翼片和所述翼型件第一侧壁和所述第二侧壁中的至少一个之间延伸。

    GAS TURBINE ENGINE AIRFOIL TIP RECESSES
    5.
    发明申请
    GAS TURBINE ENGINE AIRFOIL TIP RECESSES 审中-公开
    气体涡轮发动机气翼提示

    公开(公告)号:US20130089421A1

    公开(公告)日:2013-04-11

    申请号:US13253328

    申请日:2011-10-05

    IPC分类号: F01D11/08

    CPC分类号: F01D5/20 F05D2240/125

    摘要: A gas turbine engine airfoil extending from an airfoil base to an airfoil tip at a free end of the airfoil and from a leading edge to a trailing edge of the airfoil has at least one recess extending into and circumferentially completely through the airfoil tip and located inwardly of the leading and trailing edges. The recess is located in an area of the airfoil tip subject to high tip vibratory stress and or rubs and may be a circular scallop having a scallop radius and a maximum depth of a few mills in a range of about 0.005-0.01 inches as measured from a nominal tip edge without the recess. The airfoil may be on a radial blade, a stator vane, or an impeller blade. An annular tip seal may surround a plurality of such airfoil tips with an airfoil tip clearance therebetween.

    摘要翻译: 从机翼基座延伸到翼型件的自由端并且从翼型的前缘到后缘的燃气涡轮发动机翼型件具有至少一个延伸到其中并沿圆周完全穿过翼型件末端的凹部,并位于内侧 的前缘和后缘。 该凹部位于翼尖尖端的区域中,受到高尖端振动应力的摩擦,并且可以是圆形扇贝,扇形半径和最大深度为几毫米,范围为约0.005-0.01英寸,从 无凹槽的公称顶端边缘。 翼型件可以在径向叶片,定子叶片或叶轮叶片上。 环形尖端密封件可以围绕多个这样的翼型件尖端,其间具有翼面顶端间隙。