Eric T Sorenson

US Patent:

58043063, Sep 8, 1998

Filed:

Nov 27, 1996

Appl. No.:

8/753655

Inventors:

Eric Todd Sorenson - Long Beach CA
David Eric Daws - Los Alamitos CA

Assignee:

Northrop Grumman Corporation - Los Angeles CA

International Classification:

B32B 506
B32B 904
B27N 900
A01J 2702

US Classification:

4282974

Abstract:

The present invention is a ceramic matrix composite/organic matrix composite hybrid fire shield and the methods and processes for fabricating such a hybrid fire shield. The hybrid fire shield is comprised of an organic matrix composite substrate co-bonded with a cured-ceramic matrix composite layer made of a plurality of cured-ceramic matrix composite plies. First, the surface of the organic matrix composite is appropriately prepared to prevent delamination and enable proper bonding between the surface and the ceramic matrix composite layer. Second, the ceramic matrix composite layer is applied to the surface of the organic matrix composite. Next, the organic matrix composite with the applied ceramic matrix composite layer is processed to produce a co-bonded hybrid structure. The ceramic matrix composite layer is intended to be in direct contact with heat and flames. During impingement of the flames and heat, the cured-CMC layer pyrolyzes and converts from a polymeric to a ceramic composite material.