Profiled structure for an aircraft or turbomachine

A profiled structure for an aircraft or for a turbomachine of an aircraft,

• which is elongated in a direction of elongation in which the profiled structure has a length exposed to an airflow, and
• which has a leading edge and/or a trailing edge, at least one of which being profiled, wherein the profiled leading edge and/or the profiled trailing edge has, along said direction of elongation, serrations defined by successive teeth and depressions extending transversely with respect to the direction of elongation,
• wherein, along the profiled leading edge and/or the profiled trailing edge:
• the successive teeth and depressions extend over only a part of said length exposed to the airflow, a remaining part of said length being smooth, and
• over said part of the length, with the exception of zones comprising at most three successive teeth located at each end of said part of the length, the serrations have variations in amplitude and/or in spacing between two successive vertices of teeth or of depressions, said variations being monotonic,
• wherein, over at least said part of the length, the amplitude and/or the spacing between two successive vertices of teeth or vertices of depressions varies linearly, or quadratically, or hyperbolically, or exponentially, or logarithmically, wherein the varying occurs over three or more amplitudes and/or three or more spacings, respectively, and,
• wherein, along said length exposed to the air flow, the serrations are absent:
• at several places along said length separated from each other, or
• at an intermediate part between said ends and present towards said two ends.

A profiled structure for an aircraft or for a turbomachine of an aircraft,

• which is elongated in a direction of elongation in which the profiled structure has a length exposed to an airflow, and
• which has a leading edge and/or a trailing edge, at least one of which being profiled,
• wherein the profiled leading edge and/or the profiled trailing edge has, along said direction of elongation, serrations defined by successive teeth and depressions extending transversely with respect to the direction of elongation,
• wherein, along the profiled leading edge and/or the profiled trailing edge:
• the successive teeth and depressions extend over only a part of said length exposed to the airflow, a remaining part of said length being smooth,
• wherein, over said part of the length, with the exception of zones comprising at most three successive teeth located at each end of said part of the length, the serrations have variations in amplitude and/or in spacing between two successive vertices of teeth or of depressions, said variations being monotonic,
• wherein, over at least said part of the length, the amplitude and/or the spacing between two successive vertices of teeth or vertices of depressions varies linearly, or quadratically, or hyperbolically, or exponentially, or logarithmically, wherein the varying occurs over three or more amplitudes and/or three or more spacings, respectively, and,
• wherein said variations evolve according to at least one numerical function which remains either strictly increasing or strictly decreasing, along said direction of elongation, over a succession of at least three teeth or at least three depressions.