公开(公告)号：US20230383660A1

公开(公告)日：2023-11-30

申请号：US17804572

申请日：2022-05-30

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Ali Azmi ,  Karan Anand ,  Alexandre Capron ,  Tammy Yam ,  Sylvain Claude ,  Krishna Prasad Balike ,  Anthony Robert Bruni ,  Juan Ignacio Ruiz-Gopegui Gonzalez ,  Carlos Valbuena Merino ,  Ignacio Javier Ucin Jarne

IPC: F01D9/04 ,  F01D5/14

CPC classification number: F01D9/04 ,  F01D5/141 ,  F05D2240/121 ,  F05D2220/323 ,  F05D2300/121 ,  F05D2300/171 ,  F05D2230/60 ,  F05D2250/312

Abstract: An aircraft engine, has: an upstream stator having upstream stator vanes circumferentially distributed about a central axis; and a downstream stator having downstream stator vanes circumferentially distributed about the central axis, the downstream stator located downstream of the upstream stator relative to an airflow flowing within a core gaspath of the aircraft engine, a number of the upstream stator vanes being different than a number of the downstream stator vanes, the downstream stator vanes including: a first vane made of a first material, a major portion of a leading edge of the first vane circumferentially overlapped by one of the upstream stator vanes, and a second vane made of a second material having a greater stiffness, strength, and/or ductility than that of the first material, a major portion of a leading edge of the second vane exposed via a spacing defined between two of the upstream stator vanes.