US 11,859,534 B2
Profiled structure and associated turbomachine
Fernando Gea Aguilera, Moissy-Cramayel (FR); Mathieu Simon Paul Gruber, Moissy-Cramayel (FR); and Georges Jean Xavier Riou, Moissy-Cramayel (FR)
Assigned to Safran Aircraft Engines, Paris (FR)
Appl. No. 16/969,738
Filed by Safran Aircraft Engines, Paris (FR)
PCT Filed Feb. 15, 2019, PCT No. PCT/FR2019/050350
§ 371(c)(1), (2) Date Aug. 13, 2020,
PCT Pub. No. WO2019/158876, PCT Pub. Date Aug. 22, 2019.
Claims priority of application No. 1851360 (FR), filed on Feb. 16, 2018.
Prior Publication US 2021/0003074 A1, Jan. 7, 2021
Int. Cl. F02C 7/045 (2006.01); B64C 3/10 (2006.01); B64C 11/18 (2006.01); B64C 21/10 (2006.01); F02K 1/34 (2006.01); B64D 33/02 (2006.01); F01D 9/04 (2006.01)
CPC F02C 7/045 (2013.01) [B64C 3/10 (2013.01); B64C 11/18 (2013.01); B64C 21/10 (2013.01); B64D 33/02 (2013.01); B64D 33/06 (2013.01); F01D 9/041 (2013.01); B64D 2033/0206 (2013.01); F05D 2260/96 (2013.01)] 19 Claims
OG exemplary drawing
 
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.