A NEW NON-METALLIC ACOUSTIC CORE WITH A BURIED SEPTUM FOR APPLICATION IN COMPOSITE ACOUSTIC PANELS

摘要

Traditional configurations of Wichita built acoustic panels have employed double layer acoustic liners. Honeycomb core with a rigid buried epoxy septum has been used to create the second layer in the acoustic panel configuration. This type of rigid septum configuration has caused a significant level of in-process repair, rework, and scrap during the fabrication of the core assemblies for the acoustic panels. A new type of non-metallic honeycomb core which includes a permeable plastic septum cap placed individually in each cell has been developed for application to commercial inlet panels. This paper explores the application of the new, non-metallic Acousti-Cap honeycomb core as it supports the build of an inlet acoustic panel. Observations comparing traditional effects of rigid septum core and the new Acousti-Cap core during fabrication of the acoustic panel will be contrasted.