To provide a sound absorbing structure for absorbing sound in an adjustable frequency range to attenuate noise in an internal cabin of a transporter such as an aircraft.SOLUTION: The composite panel assembly 100 includes a sound absorbing meta-structure 102 sandwiched between a first elastic membrane 104 and a second elastic membrane 106. The meta-structure 102 includes a first honeycomb layer 116, a second honeycomb layer 118, and an intermediate space 120 therebetween. The first honeycomb layer has a partition wall defining a cavity resonator covered with a first elastic film 104 along a first side 108.The second honeycomb layer has a partition wall defining a cavity resonator covered with a second elastic film 106 along a second side 110.SELECTED DRAWING: Figure 1

    【課題】調節可能な周波数範囲における音を吸収して、航空機などの輸送体の内部キャビン内のノイズを減衰させる吸音構造体を提供する。【解決手段】複合材パネルアセンブリ100は、第1の弾性膜104と第2の弾性膜106との間にサンドウィッチされた吸音メタ構造102を含む。メタ構造102は、第1のハニカム層116、第2のハニカム層118及びそれらの間の中間空間120を含む。第1のハニカム層は、第1の側108に沿って第1の弾性膜104によってカバーされた空洞共振器を画定する間仕切り壁を有する。第2のハニカム層は、第2の側110に沿って第2の弾性膜106によってカバーされた空洞共振器を画定する間仕切り壁を有する。【選択図】図1


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    Title :

    COMPOSITE SOUND ABSORBING PANEL ASSEMBLY


    Additional title:

    複合材吸音パネルアセンブリ


    Contributors:

    Publication date :

    2019-06-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES / B64C AEROPLANES , Flugzeuge / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT



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