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    Dual frequency damper for an aircraft
    2.
    发明公开
    Dual frequency damper for an aircraft 有权
    Dämpfermit Doppelter Frequenzfürein Flugzeug

    公开(公告)号：EP2639154A1

    公开(公告)日：2013-09-18

    申请号：EP12165235.8

    申请日：2012-04-23

    申请人： Bell Helicopter Textron Inc.

    发明人： Bosworth, Jeffrey ,  Yuce, Mithat ,  Stamps, Frank B. ,  Smith, Michael R.

    IPC分类号： B64C27/00

    CPC分类号： B64C27/51

    摘要： A dual frequency damper (501) includes a liquid inertia vibration eliminator (LIVE) portion (503) and a fluid damper portion (505). LIVE portion (503) and fluid damper portion (505) operate in series and function so that dual frequency damper (501) is optimized in both stiffness and damping at multiple frequencies. LIVE portion (503) acts as a frequency dependent switch to selectively cause low frequency oscillatory forces to be treated primarily by the high spring rate and high damping rate characteristics of the fluid damper portion (505), and also to select high frequency oscillatory forces to be primarily treated by the low spring rate and low damping rate characteristics of the LIVE unit portion (503).

    摘要翻译： 双频阻尼器（501）包括液体惯性振动消除器（LIVE）部分（503）和流体阻尼器部分（505）。 活动部分（503）和流体阻尼器部分（505）串联操作并且起作用，使得双重频率阻尼器（501）在多个频率下的刚度和阻尼都被优化。 活动部分（503）用作频率相关开关，以选择性地引起低频振荡力主要由流体阻尼器部分（505）的高弹簧速率和高阻尼率特性来处理，并且还选择高频振荡力 主要由LIVE单元部分（503）的低弹簧速率和低阻尼率特性来处理。