CORRUGATED PANEL WITH HOMOGENEOUS FILLER Russian patent published in 2021 - IPC B32B3/30 

FIELD: aviation.

SUBSTANCE: invention can be used in aircraft engineering, shipbuilding and in machine building. Corrugated panel includes perforated skin 1, filler 3 made of alternating top and bottom perforated and corrugated strips, and solid lining. In the space between the corrugated strips in the middle of the panel at the top and bottom of the filler on the half of its height insert 4 installed from homogeneous materials.

EFFECT: technical result is reduction of noise level in 1.5–2 times, providing noise reduction in a wide range of frequencies.

1 cl, 1 ex, 2 dwg