公开(公告)号：US20210142774A1

公开(公告)日：2021-05-13

申请号：US16681149

申请日：2019-11-12

Applicant: Hexcel Corporation

Inventor： Merid Minasse HAILE ,  Lisa Diane BOWEN ,  Clark Russell SMITH

IPC: G10K11/162 ,  B32B3/12 ,  B32B27/06 ,  B32B7/12 ,  B32B37/12

Abstract: Acoustic honeycomb structures that include cells in which a friction-locking insertion process is used to locate acoustic barriers within honeycomb cells to provide multiple degree of freedom (MDOF) acoustic liners having a variety of acoustic resonator depths. Solid polymer films are formed into acoustic barrier caps. The acoustic barrier caps are friction-locked and bonded to cell walls at one or more cell depths to form acoustically reflective hard walls that form effective bottom ends for acoustic resonators.

公开(公告)号：US20210024711A1

公开(公告)日：2021-01-28

申请号：US16518528

申请日：2019-07-22

Applicant: Hexcel Corporation

Inventor： Robert Charles LOESCH ,  Merid Minasse HAILE ,  Earl Frederick AYLE ,  Clark Russell SMITH

IPC: C08J5/24 ,  C08J5/04

Abstract: Composite honeycomb that may be contoured to form composite honeycomb structures, which have tight radii of curvatures and/or compound curvatures, and which are suitable for use in high temperature environments. The method for making the composite honeycomb involves using high temperature prepreg to make a flexible composite honeycomb that is formed into a composite honeycomb precursor. A high temperature coating resin is applied to the composite honeycomb precursor to form the high temperature composite honeycomb.