The invention discloses a low-flow-resistance metal wire mesh composite panel aviation linear acoustic liner, which comprises a composite panel, a honeycomb and a bottom plate, and is characterized in that the composite panel is formed by compounding a fine screen mesh, a thick screen mesh and a perforated film; wherein the fine screen mesh provides viscous acoustic resistance and dissipates acoustic energy; the thick silk screen ensures the structural strength of the composite panel and plays a supporting role; the perforated film on the outer surface of the acoustic liner can reduce surface roughness and flow resistance; according to the composite panel, incident sound energy is dissipated into heat energy, the viscous acoustic resistance of the composite panel can be improved, the swept flow acoustic impedance and the sensitivity of the swept flow acoustic impedance along with the change of the swept flow are reduced, the swept flow effect is better inhibited, and the excellent aviation high-speed swept flow linear characteristic is formed. Therefore, according to the low-flow-resistance wire mesh composite panel aviation linear acoustic liner, better noise reduction in a wider flow speed range can be achieved, and meanwhile the flow resistance and the oil consumption rate are reduced.

    本发明公开了一种低流阻金属丝网复合面板航空线性声衬,包括复合面板、蜂窝与底板,复合面板由细密丝网、粗丝网、穿孔薄膜复合而成;其中,所述细密丝网,提供黏性声阻并耗散声能;所述粗丝网,保证所述复合面板结构强度,起支撑作用;穿孔薄膜在声衬外表面可降低表面粗糙度,降低流动阻力;所述复合面板,不仅将入射声能耗散为热能,还可提高其粘性声阻,并降低掠流声阻抗及其随掠流变化的敏感性,更好地抑制掠流效应,形成优异的航空高速掠流线性特性。因此,本申请的低流阻金属丝网复合面板航空线性声衬能实现更宽流速范围的更优降噪,同时降低流动阻力和耗油率。


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    Title :

    Low-flow-resistance wire mesh composite panel aviation linear acoustic liner


    Additional title:

    一种低流阻金属丝网复合面板航空线性声衬


    Contributors:
    QIU XIANGHAI (author) / LIAO JUNFENG (author) / DU LIN (author) / SUN XIAOFENG (author)

    Publication date :

    2024-12-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / F02C Gasturbinenanlagen , GAS-TURBINE PLANTS



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