公开(公告)号：US20210079883A1

公开(公告)日：2021-03-18

申请号：US16779095

申请日：2020-01-31

Applicant: Virginia Tech Intellectual Properties, Inc.

Inventor： William Nathan Alexander ,  William J. Devenport ,  Ian A. Clark ,  Justin W. Jaworski ,  Stewart Glegg ,  Nigel Peake ,  Conor Daly

IPC: F03D1/06

Abstract: The present invention relates to airfoils having surface treatments to reduce trailing edge noise. The surface treatment is designed to reduce trailing edge noise by modifying the boundary layer turbulence as it approaches the trailing edge. The surface treatment accomplishes its function by breaking up spanwise-oriented turbulence approaching the trailing edge, thereby reducing the spanwise correlation lengthscales; deflecting the boundary layer turbulence away from the edge; and/or creating spanwise vortices or instability waves to reduce the turbulence-edge interaction.

公开(公告)号：US20220195980A1

公开(公告)日：2022-06-23

申请号：US17571481

申请日：2022-01-08

Applicant: Virginia Tech Intellectual Properties, Inc.

Inventor： William Nathan Alexander ,  William J. Devenport ,  Ian A. Clark ,  Justin W. Jaworski ,  Stewart Glegg ,  Nigel Peake ,  Conor Daly

IPC: F03D1/06

Abstract: The present invention relates to airfoils having surface treatments to reduce trailing edge noise. The surface treatment is designed to reduce trailing edge noise by modifying the boundary layer turbulence as it approaches the trailing edge. The surface treatment accomplishes its function by breaking up spanwise-oriented turbulence approaching the trailing edge, thereby reducing the spanwise correlation lengthscales; deflecting the boundary layer turbulence away from the edge; and/or creating spanwise vortices or instability waves to reduce the turbulence-edge interaction.

公开(公告)号：US20170122286A1

公开(公告)日：2017-05-04

申请号：US15308181

申请日：2014-10-07

Applicant: Virginia Tech Intellectual Properties, Inc.

Inventor： William Nathan Alexander ,  William J. Devenport ,  Ian A. Clark ,  Justin W. Jaworski ,  Stewart Glegg ,  Nigel Peake ,  Conor Daly

IPC: F03D1/06

CPC classification number: F03D1/0633 ,  F03D1/0675 ,  F05B2240/30 ,  F05B2260/962 ,  Y02E10/721

Abstract: The present invention relates to airfoils having surface treatments to reduce trailing edge noise. The surface treatment is designed to reduce trailing edge noise by modifying the boundary layer turbulence as it approaches the trailing edge. The surface treatment accomplishes its function by breaking up spanwise-oriented turbulence approaching the trailing edge, thereby reducing the spanwise correlation lengthscales; deflecting the boundary layer turbulence away from the edge; and/or creating spanwise vortices or instability waves to reduce the turbulence-edge interaction.