FIELD: aviation.
SUBSTANCE: invention relates to a profiled aerodynamic structure having profiled front edge (164) and a gear profile located along line (164a) of the front edge and containing a sequence of gears (30) and recesses (32), differ in that it has porous sound-absorbing zones (52) located in the direction of the bottom of recesses (32).
EFFECT: invention provides for weakening of locally intensive pressure fluctuations by using a porous surface in recesses of gears.
14 cl, 17 dwg
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