The invention provides a spermaceti fluid imitating resistance and noise reduction skin based on a flexible joint vibration reduction unit lattice structure. A lattice structure middle layer formed by arranging a plurality of flexible joint vibration reduction units according to a certain rule is arranged between an inner side flexible substrate and an outer side flexible skin; the outer wall of the inner side flexible substrate and the inner wall of the outer side flexible skin are provided with spherical hinge fixing holes, the spherical hinge fixing holes are arranged according to the lattice arrangement rule of the flexible joint vibration reduction units, and the flexible joint vibration reduction units are fixedly connected with the inner side flexible substrate and the outer side flexible skin through the spherical hinge fixing holes. The spermaceti fluid imitating resistance and noise reduction skin based on the flexible joint vibration reduction unit lattice structure is laid on the surface of an aircraft, when the motion speed of the aircraft changes, the pulse excitation amplitude and frequency of adjacent flow fields change, the skin can better influence and control the structure of the adjacent flow fields by passively adjusting the rigidity and damping characteristics of the skin, and therefore, when the flow field speed changes, the good resistance and noise reduction effect can still be guaranteed.

    本发明提供一种基于柔性关节减振单元点阵结构的仿鲸脂流体减阻降噪蒙皮,内侧柔性基底与所述外侧柔性表皮之间是由多个柔性关节减振单元按照一定规律排布组成的点阵结构中间层,内侧柔性基底外壁和外侧柔性表皮内壁上设有球铰固定孔,球铰固定孔依照所述柔性关节减振单元点阵排布规律设置,柔性关节减振单元通过球铰固定孔与所述内侧柔性基底及所述外侧柔性表皮固定连接。基于柔性关节减振单元点阵结构的仿鲸脂流体减阻降噪蒙皮敷设于航行器表面,当航行器运动速度变化时,相邻流场脉动激励幅值及频率产生变化,蒙皮通过被动调整自身刚度与阻尼特性,能够更好的影响控制相邻流场结构,从而在流场速度变化时,依然能够保证良好的减阻降噪效果。


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    Titel :

    Spermaceti fluid imitating resistance and noise reduction skin based on flexible joint vibration reduction unit lattice structure


    Weitere Titelangaben:

    基于柔性关节减振单元点阵结构的仿鲸脂流体减阻降噪蒙皮


    Beteiligte:
    DONG LIQIANG (Autor:in) / GUO CHANG (Autor:in) / WU QIONG (Autor:in) / ZHAO DAN (Autor:in) / LIU SHAOGANG (Autor:in)

    Erscheinungsdatum :

    2021-10-22


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge / B61D Einzelheiten oder Arten des Wagenaufbaus von Eisenbahnfahrzeugen , BODY DETAILS OR KINDS OF RAILWAY VEHICLES / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / B64C AEROPLANES , Flugzeuge / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES



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