Patent ID: 7005175

Claim:
A primary load-bearing aircraft fuselage structural shell comprising a double-walled primary load-bearing composite structural component that comprises: a first cover layer; a second cover layer spaced apart from said first cover layer; and a composite core element structurally bonded to both of, and sandwiched between, said first and second cover layers; wherein said first cover layer forms an inner skin of said fuselage structural shell that is constructed to carry and carries a first portion being less than all of a total load carried by said fuselage structural shell; wherein said second cover layer forms an outer skin of said fuselage structural shell that is constructed to carry and carries a a non-zero a second portion of said total load to be carried by said fuselage structural shell, wherein said first portion is greater than said second portion and is more than half of said total load; wherein said inner skin is constructed structurally stronger than said outer skin so as to carry said first portion of said total load that is greater than said second portion of said total load carried by said outer skin; and wherein said core element is air permeable and ventilatable when bonded to and sandwiched between said cover layers.