The invention discloses a double-layer honeycomb noise reduction structure and relates to the technology of plane noise reduction structural design. The double-layer honeycomb noise reduction structure is used for noise reduction of plane cabins. An upper honeycomb core is arranged between an upper panel and a middle panel; a lower honeycomb core is arranged between the middle panel and a lower panel. Micro pores are evenly formed in the upper panel. The lower panel is installed towards the outer side of a plane body structure, and the upper panel is installed towards the inner side of the plane body structure. The double-layer honeycomb noise reduction structure is simple and convenient to manufacture, other sound absorption materials do not need to be added, the sound isolation and sound absorption functions are both achieved, and the overall noise reduction performance is excellent; the structural weight is light, the structural rigidity is good, good noise reduction performance can be obtained with low weight cost, and the double-layer honeycomb noise reduction structure is high in stability, safe and reliable.
Double-layer honeycomb noise reduction structure
2015-12-23
Patent
Elektronische Ressource
Englisch
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