公开(公告)号：US20180252113A1

公开(公告)日：2018-09-06

申请号：US15907538

申请日：2018-02-28

Applicant: ROLLS-ROYCE plc

Inventor： Richard NORTHALL ,  Anthony J. RAE ,  Michael S. KRAUTHEIM ,  Alastair D. WALKER ,  Jonathan F. CARROTTE ,  Ian MARIAH

IPC: F01D9/04 ,  F01D5/14

Abstract: An annular array of turning vanes 200 is provided in a duct 100 of a gas turbine engine 10. The annular array of turning vanes 200 comprises aerodynamic vanes 220 and strut-vanes 240. The strut-vanes 240 have greater chord length and extend further axially downstream than the aerodynamic vanes 220. The leading edge of the strut-vanes 240 is upstream of the trailing edge of the aerodynamic vanes 220. The strut-vanes provide flow turning. The space to chord ratio of the aerodynamic vanes that are closest to the suction surface of a strut-vane is higher than the space to chord ratio of aerodynamic vanes that are closest to a pressure surface of the strut-vane. The arrangement allows the duct 100 to be axially short.

公开(公告)号：US20180252231A1

公开(公告)日：2018-09-06

申请号：US15907531

申请日：2018-02-28

Applicant: ROLLS-ROYCE plc

Inventor： Richard NORTHALL ,  Anthony J. RAE ,  Michael S. KRAUTHEIM ,  Alastair D. WALKER ,  Jonathan F. CARROTTE ,  Ian MARIAH

IPC: F04D29/54 ,  F02C3/06

Abstract: An annular array of turning vanes 200 is provided in a duct 100 of a gas turbine engine 10. The annular array of turning vanes 200 comprises aerodynamic vanes 220 and strut-vanes 240. The strut-vanes 240 have greater chord length and extend further axially downstream than the aerodynamic vanes 220. The leading edge of the strut-vanes 240 is upstream of the trailing edge of the aerodynamic vanes 220. The strut-vanes provide flow turning. The arrangement allows the duct 100 to be axially short.