公开(公告)号：US11668196B2

公开(公告)日：2023-06-06

申请号：US17286751

申请日：2019-09-24

Applicant: SAFRAN AIRCRAFT ENGINES ,  OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES

Inventor： Fernando Gea Aguilera ,  Raphaël Barrier ,  Mathieu Simon Paul Gruber ,  Cyril Polacsek ,  Hélène Dominique Jeanne Posson

IPC: F01D5/14 ,  F01D9/04 ,  B64C3/10 ,  B64C21/10

CPC classification number: F01D5/145 ,  B64C3/10 ,  B64C21/10 ,  F01D9/041 ,  B64C2230/14 ,  F05D2220/323 ,  F05D2240/121 ,  F05D2240/122 ,  F05D2240/303 ,  F05D2250/183 ,  F05D2250/184 ,  F05D2260/961

Abstract: A profiled structure for an aircraft or turbomachine is elongated in a direction in which the structure has a length exposed to an airflow and includes serrations defined by successive teeth and depressions. The serrations may be transverse to a leading edge and/or a trailing edge of the profiled structure and in the direction of elongation. Along the profiled leading edge and/or profiled trailing edge, the successive teeth and depressions may extend only over a part of the length exposed to the flow. The amplitude and/or spacing of the teeth may vary monotonically except for the few teeth nearest each end of the part, with a remaining part of the length being smooth.

公开(公告)号：US11560796B2

公开(公告)日：2023-01-24

申请号：US16657278

申请日：2019-10-18

Applicant: SAFRAN AIRCRAFT ENGINES ,  OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES

Inventor： Fernando Gea Aguilera ,  Raphaël Barrier ,  Mathieu Simon Paul Gruber ,  Cyril Polacsek ,  Hélène Dominique Jeanne Posson

IPC: F01D5/14 ,  F01D9/04 ,  B64C3/10 ,  B64C21/10 ,  B64C11/18

Abstract: The invention relates to a profiled structure elongated in a direction in which the structure has a length exposed to an airflow and transversely to which the structure has a leading edge and/or a trailing edge, at least one of which is profiled and has, along said direction of elongation, geometric serration patterns defined by a succession of peaks and troughs. Along the profiled leading edge and/or trailing edge, the serration patterns have a geometric pattern that is repeated in the direction of elongation, the shape of which is stretched and/or contracted transversely to the direction of elongation and/or in the direction of elongation.

公开(公告)号：US11525365B2

公开(公告)日：2022-12-13

申请号：US16970526

申请日：2019-02-15

Applicant: SAFRAN AIRCRAFT ENGINES

Inventor： Fernando Gea Aguilera ,  Matthieu Fiack ,  Mathieu Simon Paul Gruber

IPC: F01D9/04 ,  F01D5/14 ,  F02C7/045

Abstract: A front fan turbomachine includes an annular separating wall having a slat for separating an air flow between a primary flow and a secondary flow, the slat having a leading edge; inlet guide vanes (IGV) for guiding the primary flow and outlet guide vanes (OGV) blades for guiding the secondary flow. The leading edge of the slat has a serrated profile having a succession of teeth and depressions.

公开(公告)号：US11046424B2

公开(公告)日：2021-06-29

申请号：US15506937

申请日：2015-08-28

Applicant: SAFRAN AIRCRAFT ENGINES

Inventor： Clement Marcel Maurice Dejeu ,  Jonathan Evert Vlastuin ,  Mathieu Simon Paul Gruber

IPC: B64C11/06 ,  B64C11/48 ,  B64C11/30 ,  F02K3/072 ,  F01D1/26 ,  F01D7/00 ,  B64D27/00 ,  F04D29/36

Abstract: A variable pitch bladed disc including a plurality of blades, each being of variable pitch about a blade axis of rotation and having a root, the plurality of blades including at least one first blade and at least one second blade, a plurality of rotor connecting shafts, each shaft having a root and a tip, the root of each blade being mounted on the tip of a corresponding rotor connecting shaft via a pivot so as to allow each blade to be rotated about the blade axis of rotation, the first blade having a first rotation axis inclination such that the rotation axis thereof is inclined in a fixed manner with respect to a radial axis passing through the root of the corresponding shaft, and the second blade has a second rotation axis inclination different from the first rotation axis inclination.