The invention provides an undercarriage folding and unfolding noise reduction structure. The undercarriage folding and unfolding noise reduction structure comprises an undercarriage, an undercarriage cabin used for containing the undercarriage and a sawtooth structure arranged at the front edge of an opening of the undercarriage cabin. Wherein the number of the sawtooth structures is multiple, the sawtooth structures are square, the sawtooth structures are distributed at the front edge of an opening of the undercarriage cabin at equal intervals, and when the undercarriage is located on the outer side of the undercarriage cabin, the sawtooth structures improve forming of a shear layer at the front edge of the opening of the undercarriage cabin and damage flowing of the shear layer; and therefore, the noise generated when the undercarriage is retracted and released is reduced.

    本申请提供了一种起落架收放降噪结构,该起落架收放降噪结构包括:起落架、用于容纳所述起落架的起落架舱和设置在所述起落架舱开口前缘的锯齿结构;其中,所述锯齿结构为多个且为方形,多个所述锯齿结构等间距的分布在所述起落架舱开口前缘,当所述起落架位于所述起落架舱外侧时,所述锯齿结构改善所述起落架舱开口前缘剪切层的形成,破坏剪切层流动,从而降低起落架收放时的噪声。


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    Title :

    Undercarriage folding and unfolding noise reduction structure


    Additional title:

    一种起落架收放降噪结构


    Contributors:
    LEI WUTAO (author) / WANG ZHEN (author) / ZHANG YANJUN (author) / LI JIE (author) / REN XIAOFENG (author) / JANG CHANG-KU (author) / LI MIN (author)

    Publication date :

    2024-02-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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