초록 ▼

An acoustic liner employable in jet engine housing construction for sound absorption such as for inclusion in nacelle components. The liner has a solid backface sheet having a surface to which is attached a first side of a honeycomb core structure. Attached to the opposing second side of the honeyco

An acoustic liner employable in jet engine housing construction for sound absorption such as for inclusion in nacelle components. The liner has a solid backface sheet having a surface to which is attached a first side of a honeycomb core structure. Attached to the opposing second side of the honeycomb core structure is a mesh structure to which is attached a perforated face sheet to be exposed to the exterior. As is thus apparent, the liner of the present invention provides a mesh situated below a protective perforate sheet. This construction produces an acoustic liner having substantially the efficiency of a linear liner system and the durability of a perforate face sheet system.

대표청구항 ▼

[ What is claimed is:] [1.] A method for fabricating an acoustic liner for sound absorption, the method comprising:a) priming opposing sides of a honeycomb core structure by applying an epoxy adhesive primer to each side and curing said primer;b) applying a B-stage cured adhesive on exposed end surf

[ What is claimed is:] [1.] A method for fabricating an acoustic liner for sound absorption, the method comprising:a) priming opposing sides of a honeycomb core structure by applying an epoxy adhesive primer to each side and curing said primer;b) applying a B-stage cured adhesive on exposed end surfaces of the core structure, placing a mesh structure on that side of the core structure against said adhesive and applying a supported film adhesive to the opposite side of the core structure to which a backface sheet is applied and heating the resultant product for a time sufficient to cause adhesive-cured bonding of the backface sheet and the mesh structure to the core structure;c) priming a perforated sheet by applying an epoxy primer on one side thereof, curing said primer, and applying an epoxy adhesive on said side and thereafter B-stage curing said epoxy adhesive; andd) placing said one side of the perforated sheet on the mesh structure and heating the resultant product for a time sufficient to cause adhesive-cured bonding of the perforated sheet to the mesh structure.