公开(公告)号：US20170191414A1

公开(公告)日：2017-07-06

申请号：US14984767

申请日：2015-12-30

申请人： General Electric Company ,  MRA SYSTEMS, INC.

发明人： Michael Moses Martinez ,  Rudramuni Kariveerappa Majjigi ,  Steven Thomas Davies ,  Egbert Geertsema

IPC分类号： F02C7/045 ,  B64D33/02 ,  F04D29/66

CPC分类号： F02C7/045 ,  B64D33/02 ,  B64D2033/0206 ,  B64D2033/0286 ,  F04D29/664 ,  F05D2240/40 ,  F05D2250/132 ,  F05D2250/283 ,  F05D2250/312 ,  F05D2260/963 ,  G10K11/168 ,  G10K11/172

摘要： A single degree of freedom (SDOF) acoustic liner includes a porous face sheet, a substantially imperforate back sheet generally parallel to and opposing said porous face sheet and defining a thickness therebetween, and an acoustic core layer of contiguous adjacent resonant cavities disposed between the porous face sheet and the imperforate back sheet. The acoustic core layer includes a first resonant cell having a first internal volume therein and a second resonant cell having a second internal volume therein different than the first internal volume. A cell partition wall extends between the porous face sheet and the imperforate back sheet, and separates and seals the first resonant cell from the second resonant cell. In a thickness direction, and perpendicular to a plane generally parallel with the porous face sheet and the substantially imperforate back sheet, the first internal volume overlaps the second internal volume over the cell partition wall.

公开(公告)号：US10563578B2

公开(公告)日：2020-02-18

申请号：US15550800

申请日：2015-02-18

申请人： MRA Systems, Inc. ,  GENERAL ELECTRIC COMPANY

发明人： Andrew Michael Roach ,  Richard David Cedar ,  Steven Thomas Davies ,  Timothy Richard Depuy ,  Graham Frank Howarth ,  Michael Moses Martinez

IPC分类号： F02C7/045 ,  F02K1/82 ,  G10K11/168 ,  G10K11/172 ,  B05D5/08 ,  B64D33/02 ,  B32B3/12 ,  B32B3/24 ,  B32B3/26 ,  F02C7/24 ,  F02K1/44 ,  G10K11/16

摘要： An acoustic liner for a turbine engine, the acoustic liner includes a support layer that includes a set of partitioned cavities with open faces, a perforated sheet that includes a set of perforations with corresponding inlets, the perforated sheet supported by the support layer such that perforations are in overlying relationship with the open faces to form paired perforations and cavities that define acoustic resonator cells, and a coating applied to the perforated sheet.

公开(公告)号：US10174675B2

公开(公告)日：2019-01-08

申请号：US14984767

申请日：2015-12-30

申请人： General Electric Company ,  MRA SYSTEMS, INC.

发明人： Michael Moses Martinez ,  Rudramuni Kariveerappa Majjigi ,  Steven Thomas Davies ,  Egbert Geertsema

IPC分类号： F02C7/045 ,  B64D33/02 ,  F04D29/66 ,  G10K11/168 ,  G10K11/172

摘要： A single degree of freedom (SDOF) acoustic liner includes a porous face sheet, a substantially imperforate back sheet generally parallel to and opposing said porous face sheet and defining a thickness therebetween, and an acoustic core layer of contiguous adjacent resonant cavities disposed between the porous face sheet and the imperforate back sheet. The acoustic core layer includes a first resonant cell having a first internal volume therein and a second resonant cell having a second internal volume therein different than the first internal volume. A cell partition wall extends between the porous face sheet and the imperforate back sheet, and separates and seals the first resonant cell from the second resonant cell. In a thickness direction, and perpendicular to a plane generally parallel with the porous face sheet and the substantially imperforate back sheet, the first internal volume overlaps the second internal volume over the cell partition wall.

公开(公告)号：US20180016987A1

公开(公告)日：2018-01-18

申请号：US15553207

申请日：2015-03-10

申请人： GENERAL ELECTRIC COMPANY ,  MIDDLE RIVER AIRCRAFT SYSTEMS

发明人： Graham Frank Howarth ,  Andrew Michael Roach ,  Steven Thomas Davies ,  Richard David Cedar ,  Michael Moses Martinez ,  Timothy Richard DePuy

IPC分类号： F02C7/24

CPC分类号： F02C7/24 ,  F02C7/045 ,  F02K1/827 ,  F05D2220/323 ,  F05D2250/11 ,  F05D2250/14 ,  F05D2250/283 ,  F05D2260/963 ,  G10K11/172 ,  Y02T50/672

摘要： An acoustic liner for a turbine engine, the acoustic liner includes a support layer that includes a set of partitioned cavities with open faces, a facing sheet operably coupled to the support layer such that the facing sheet overlies and closes the open faces, a set of perforations located in the facing sheet and in fluid communication with a corresponding one of the cavities to form a set of acoustic resonators, and at least a subset of the perforations have an axially-oriented, relative to the axial flow path, inlet.