Method of detecting a leak past a dynamic seal in aircraft landing gear
    1.
    发明授权
    Method of detecting a leak past a dynamic seal in aircraft landing gear 有权
    检测飞机起落架动态密封泄漏的方法

    公开(公告)号:US09561872B2

    公开(公告)日:2017-02-07

    申请号:US14789314

    申请日:2015-07-01

    Inventor: Graeme Steel

    Abstract: A leak detection method for detecting a leak past a dynamic seal in aircraft landing gear (100) comprising: a strut (10); a rod (20) slidably mounted in the strut; and a bearing (70) fitted to an end (11) of the strut to guide the rod (20). The bearing includes a bushing (50) having a seal (62) arranged to rub against the rod (20) to provide sealing between the strut and the rod, defines a fluid chamber (2), and a stop nut (40) for preventing the bushing from moving relative to the strut. The method includes a step of installing a test nut (3) without a wiper seal in the place of the stop nut (40), the step of putting the hydraulic fluid in the landing gear under pressure, and the step of verifying the existence of a leak of hydraulic fluid on the outside surface (22) of the rod (20).

    Abstract translation: 一种用于检测在飞机起落架(100)中通过动态密封件的泄漏的泄漏检测方法,包括:支柱(10); 可滑动地安装在支柱中的杆(20) 以及装配到支柱的端部(11)以引导杆(20)的轴承(70)。 所述轴承包括具有密封件(62)的套管(50),所述密封件(62)布置成抵靠所述杆(20)摩擦,以在所述支柱和所述杆之间提供密封,限定流体室(2)和止动螺母(40) 衬套相对于支柱移动。 该方法包括安装没有刮水器密封件的测试螺母(3)代替止动螺母(40)的步骤,将起落架中的液压流体施加压力的步骤,以及验证是否存在 液压流体在杆(20)的外表面(22)上的泄漏。

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