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    • 5. 发明授权
    • Acoustic processing structure particularly adapted to the air inlet of an aircraft nacelle
    • 声学处理结构特别适用于飞机机舱的进气口
    • US08413922B2
    • 2013-04-09
    • US12809742
    • 2008-12-16
    • Alain PorteJacques LalaneFabrice GantieJacques Barillot-Creuzet
    • Alain PorteJacques LalaneFabrice GantieJacques Barillot-Creuzet
    • B64D33/02B64D15/04
    • B64D33/02B64D15/04B64D2033/0206B64D2033/0233
    • An acoustic treatment structure related to a leading edge onto which an aerodynamic stream flows, in particular at an air intake of an aircraft nacelle, includes—from the outside to the inside—at least one acoustically resistive substructure (30), at least one alveolar substructure including strips (32) of cells, arranged in a direction that is essentially perpendicular to the direction of flow of the aerodynamic stream, and at least one reflective layer (34). Each strip (32) includes a first part that insulates the strips from one another, called a support, with a U-shaped cross-section in the longitudinal direction, whose open surface that is opposite to the bottom of the U shape is flattened against the acoustically resistive substructure (30), and at least a second part, called partitioning, making it possible to partition the space that is delimited by the support and the acoustically resistive substructure (30) into cells.
    • 与空气动力流流动的前缘相关联的声学处理结构,特别是在飞机机舱的空气入口处,包括 - 从外部至内部至少一个声阻子结构(30),至少一个肺泡 子结构,包括沿基本上垂直于空气动力流的流动方向布置的细胞条带(32),以及至少一个反射层(34)。 每个条带(32)包括第一部分,其将条带彼此绝缘,称为支撑件,其在纵向方向上具有U形横截面,其与U形底部相对的开口表面被平坦化 声阻抗子结构(30)和至少第二部分(称为分割),使得可以将由支撑体和声阻子结构(30)限定的空间分隔成单元。