Sandwich panel for sound absorption
    1.
    发明申请
    Sandwich panel for sound absorption 审中-公开
    三明治板吸音

    公开(公告)号:US20090173572A1

    公开(公告)日:2009-07-09

    申请号:US12316579

    申请日:2008-12-12

    IPC分类号: E04B1/82

    CPC分类号: G10K11/172

    摘要: An aircraft cabin panel for sound absorption, with a core layer that comprises a plurality of cells that extend in an open manner across the thickness of the core layer and that are separated from each other by cell walls, and with a first cover layer that faces away from the sound field, as well as a second cover layer that faces towards the sound field and that comprises a plurality of perforation holes. The second cover layer is multi-layered and apart from a layer with the perforation also comprises a second layer that acts as a flow resistance device. The second layer is arranged on the outside, and visually closes off the perforation, and the outer layer comprises an air-permeable woven fabric.

    摘要翻译: 一种用于吸声的飞机机舱面板,其核心层包括多个细胞,其以开放的方式跨过芯层的厚度延伸并且通过细胞壁彼此分离,并且具有面向第一覆盖层 远离声场,以及面向声场的第二覆盖层,并且包括多个穿孔。 第二覆盖层是多层的,并且与具有穿孔的层分开还包括充当流阻装置的第二层。 第二层布置在外部,并且目视上封闭穿孔,并且外层包括透气织物。