COMBINED CORRUGATED PANEL Russian patent published in 2023 - IPC F02C7/24 E04B1/86 B21D13/00 

FIELD: aircraft and engine building.

SUBSTANCE: invention relates to aircraft and engine building and can be used in the manufacture of panels with corrugated core. The panel contains perforated and solid skins connected with perforated corrugated filler. A perforated corrugated lining with protrusions with a height equal to half the height of the corrugation is installed on the corrugated filler.

EFFECT: resulting combined corrugated panel provides more than a 2-fold increase in noise attenuation efficiency.

1 cl, 1 dwg, 1 ex