Invention Grant
- Patent Title: Compressor variable vane assembly
- Patent Title (中): 压缩机可变叶片总成
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Application No.: US14228616Application Date: 2014-03-28
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Publication No.: US09533485B2Publication Date: 2017-01-03
- Inventor: Andrew R. Marshall , David Menheere
- Applicant: Pratt & Whitney Canada Corp.
- Applicant Address: CA Longueuil
- Assignee: PRATT & WHITNEY CANADA CORP.
- Current Assignee: PRATT & WHITNEY CANADA CORP.
- Current Assignee Address: CA Longueuil
- Agency: Norton Rose Fulbright Canada LLP.
- Main IPC: F04D29/56
- IPC: F04D29/56 ; B33Y10/00 ; F01D5/14 ; F01D17/16 ; F04D29/02 ; F04D29/16 ; B33Y80/00 ; F01D11/12

Abstract:
A variable vane assembly for a gas turbine engine compressor and method of manufacturing same is described. A plurality of projections the inner and/or outer shroud which protruded into the annular gas path such as to ensure that a radial clearance gap, defined between the projections and a vane airfoil overhang portion, remains substantially constant throughout a substantial portion of the vane pivot arc of the variable vane. The method includes forming one cavities within the shroud, the cavities isolated from the annular gas path and disposed radially beneath at least each of the projections, and providing one or more structural reinforcing elements within the cavities.
Public/Granted literature
- US20150275916A1 COMPRESSOR VARIABLE VANE ASSEMBLY Public/Granted day:2015-10-01
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