[Object] To provide a noise reduction apparatus, an aircraft, and a noise reduction method capable of increasing the amount of noise reduction.[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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    Title :

    NOISE REDUCING DEVICE, AIRCRAFT, AND NOISE REDUCTION METHOD


    Additional title:

    VORRICHTUNG ZUR GERÄUSCHVERMINDERUNG, FLUGZEUG UND VERFAHREN ZUR GERÄUSCHVERMINDERUNG
    DISPOSITIF DE RÉDUCTION DU BRUIT, AÉRONEF ET PROCÉDÉ DE RÉDUCTION DU BRUIT


    Contributors:

    Publication date :

    2021-04-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F15D FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS , Strömungsdynamik, d.h. Verfahren oder Vorrichtungen zum Beeinflussen der Strömung von Gasen oder Flüssigkeiten / B64C AEROPLANES , Flugzeuge



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