[Solving Means] The noise reduction apparatus 1 includes a porous plate 2 disposed to face a fluid flow, the porous plate 2 including a bend region 5 bent toward an upstream side of the fluid flow. The bend region 5 is provided at the end portion 6 of the porous plate 2, and has a concave R-shape on an upstream side of the fluid flow. Although the direction of the fluid flow is typically deflected toward the outside from the center of the porous plate 2 due to the porous plate 2, the deflected fluid easily passes through the porous plate 2 since the porous plate has the bend region 5. Thus, the shear layer of the fluid flow is weakened, the noise induced by the vortex is reduced, and it is possible to increase the reduction amount of noise.


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    Titel :

    NOISE REDUCTION APPARATUS, AIRCRAFT, AND NOISE REDUCTION METHOD


    Beteiligte:
    HIRAI TOHRU (Autor:in) / MURAYAMA MITSUHIRO (Autor:in) / YAMAMOTO KAZUOMI (Autor:in) / ITO YASUSHI (Autor:in) / TANAKA KENTARO (Autor:in) / TAKAISHI TAKEHISA (Autor:in) / YOKOKAWA YUZURU (Autor:in)

    Erscheinungsdatum :

    11.02.2021


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B64C AEROPLANES , Flugzeuge



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