公开(公告)号：US09957840B2

公开(公告)日：2018-05-01

申请号：US14760719

申请日：2014-02-19

Applicant: United Technologies Corporation

Inventor： David A. Topol ,  Bruce L. Morin ,  Dilip Prasad ,  Thomas J. Ouellette

IPC: F01D25/24 ,  F01D5/02 ,  F01D1/02 ,  F02C7/045

CPC classification number: F01D25/24 ,  F01D1/02 ,  F01D5/021 ,  F02C7/045 ,  F05D2220/32 ,  F05D2250/283 ,  F05D2260/96

Abstract: A gas turbine engine has a propulsor including a fan and a liner positioned upstream of the fan. The liner has a backing plate, a cellular structure with cells extending from the backing plate, and a perforated sheet with a depth defined as a distance between the perforated sheet and the backing sheet. The depth is selected to achieve a desired ratio of the depth relative to a gap?. A depth to gap ratio is substantially in a range of 0.035 to 0.08. A method is also disclosed.

公开(公告)号：US20150337684A1

公开(公告)日：2015-11-26

申请号：US14760719

申请日：2014-02-19

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： David A. Topol ,  Bruce L. Morin ,  Dilip Prasad ,  Thomas J. Ouellette

IPC: F01D25/24 ,  F01D1/02 ,  F01D5/02

CPC classification number: F01D25/24 ,  F01D1/02 ,  F01D5/021 ,  F02C7/045 ,  F05D2220/32 ,  F05D2250/283 ,  F05D2260/96

Abstract: A gas turbine engine has a propulsor including a fan and a liner positioned upstream of the fan. The liner has a backing plate, a cellular structure with cells extending from the backing plate, and a perforated sheet with a depth defined as a distance between the perforated sheet and the backing sheet. The depth is selected to achieve a desired ratio of the depth relative to a gap?. A depth to gap ratio is substantially in a range of 0.035 to 0.08. A method is also disclosed.

Abstract translation: 燃气涡轮发动机具有包括风扇和位于风扇上游的衬垫的推进器。 衬垫具有背板，具有从背板延伸的单元的多孔结构以及被定义为多孔板和背衬板之间距离的深度的多孔板。 选择深度以实现相对于间隙α的深度的期望比率。 深度与间隙比基本上在0.035至0.08的范围内。 还公开了一种方法。