Patent ID: 11859534
Assignee: SAFRAN AIRCRAFT ENGINES
Field: Transport (Mechanical engineering)
Classification: CPC F  B  Y | IPC B  F

Claim 0:
1. A profiled air flow structure comprising:
a body having an upstream leading edge and/or a downstream trailing edge;
porous acoustically absorbent regions; and
along the upstream leading edge and/or the downstream trailing edge, a serrated profile line showing a succession of teeth and depressions,
wherein the porous acoustically absorbent regions locally form bottoms for the depressions where the porous acoustically absorbent regions occupy a part of the body to define, together with the body, the serrated profile line at the upstream leading edge and/or the downstream trailing edge, wherein each porous acoustically absorbent region has a geometric center located downstream of the bottom of the depressions in the upstream leading edge or upstream of the bottom of the depressions in the downstream trailing edge.