US 11,732,588 B2
Profiled structure for an aircraft or turbomachine for an aircraft
Fernando Gea Aguilera, Moissy-Cramayel (FR); Raphaël Barrier, Paris (FR); Mathieu Simon Paul Gruber, Moissy-Cramayel (FR); Cyril Polacsek, Clamart (FR); and Hélène Dominique Jeanne Posson, Moissy-Cramayel (FR)
Assigned to SAFRAN AIRCRAFT ENGINES, Paris (FR); and OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES, Palaiseau (FR)
Filed by SAFRAN AIRCRAFT ENGINES, Paris (FR); and OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES, Palaiseau (FR)
Filed on Dec. 7, 2022, as Appl. No. 18/76,976.
Application 18/076,976 is a continuation of application No. 16/657,278, filed on Oct. 18, 2019, granted, now 11,560,796.
Claims priority of application No. 1859663 (FR), filed on Oct. 18, 2018.
Prior Publication US 2023/0123376 A1, Apr. 20, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F01D 5/14 (2006.01); F01D 9/04 (2006.01); B64C 3/10 (2006.01); B64C 21/10 (2006.01); B64C 11/18 (2006.01)
CPC F01D 5/141 (2013.01) [B64C 3/10 (2013.01); B64C 11/18 (2013.01); B64C 21/10 (2013.01); F01D 9/041 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A turbomachine comprising a rotor and a stator, the stator comprising a plurality of profiled structures, each profiled structure,
being elongated in a direction of elongation in which the profiled structure has a length exposed to an airflow, and
having a leading edge and/or a trailing edge, at least one of which is profiled and has, in said direction of elongation, serrations defined by a succession of peaks and troughs,
the serrations having a geometric pattern transformed, over at least a part of said length exposed to the airflow, by successive scaling, via multiplicative factors, in the direction of elongation and/or transverse to the direction of elongation,
wherein, defined with reference to a radial distribution of the integral scale of the turbulence, the geometric pattern evolves in a non-periodic manner:
in the direction of elongation, according to a linear, quadratic, hyperbolic, exponential or logarithmic law of evolution, and/or
transversely to the direction of elongation, according to a linear, quadratic, hyperbolic, exponential or logarithmic law of evolution.