Patent ID: 7419031
Filing Date: 2008-09-02
Classification: B32B,B64C

Abstract:
1. An integrally damped aircraft floor panel comprising: a honeycomb core element having an upper core surface, a lower core surface, and a core thickness greater than 0.4 inches; an upper face sheet assembly mounted to and sealing said upper core surface, said upper face sheet assembly comprised of at least one upper material sheet impregnated with an upper epoxy resin; and a lower damping face sheet assembly mounted to and sealing said lower core surface, said lower damping face sheet assembly including at least one lower material sheet impregnated with a highly damped lower epoxy resin; wherein said upper face sheet assembly generates high rigidity in comparison to the low rigidity of the lower damping face sheet assembly and said lower damping face sheet assembly dampens vibrational noise.