FIELD: aviation; acoustics.
SUBSTANCE: invention relates to aircraft (AC) interior panel with properties of noise attenuation. Wall of AC fuselage comprises frame elements passing parallel to each other, and panel assembly. Assembly comprises first and second panels, having inner and outer surfaces. Second panel comprises rib elements formed in it, which extend inside and each of which forms outer rib cavity and comprises inner and outer surfaces. Inner surface of first panel section is located at distance from inner surface of first panel to form cavity. At that, first and second frame elements are inserted into first and second outer rib cavities and pass in length along them.
EFFECT: noise reduction is achieved.
8 cl, 6 dwg
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