公开(公告)号：US11566564B2

公开(公告)日：2023-01-31

申请号：US17308715

申请日：2021-05-05

Applicant: RAYTHEON TECHNOLOGIES CORPORATION

Inventor： Anthony R. Bifulco ,  Duncan R. C. Lee

IPC: F02C7/24 ,  G10K11/16

Abstract: A system for dampening noise generated by a gas turbine engine is disclosed. In various embodiments, the system includes a fan exit guide vane having a leading edge, a trailing edge and a pocket that extends in a chordwise direction between the leading edge and the trailing edge; and an acoustic panel configured to be received within the pocket, the acoustic panel including a back sheet, a face sheet and a core disposed between the back sheet and the face sheet, the core having a first cavity extending between a first wall and a second wall and a second cavity disposed within the first cavity.