Patent ID: 8128028

Claim:
An aircraft comprising: a fuselage; and a wing fixedly attached to the fuselage, wherein at least one of the fuselage and the wing includes a composite panel, the composite panel including: a first face sheet; a second face sheet offset from the first face sheet; a first core portion extending between the first and second face sheets and attached to the first and second face sheets; a second core portion spaced apart from the first core portion, the second core portion extending between the first and second face sheets and attached to the first and second face sheets; a stiffener disposed between the first and second face sheets at least proximate to the first and second core portions, the stiffener having at least one attachment portion attached to the first face sheets, wherein the first core portion fits against the stiffener and overlays the at least one attachment portion to sandwich the at least one attachment portion between the first core portion and the first face sheet, and wherein the first core portion is bonded to the at least one attachment portion; and an elongate passageway defined by the stiffener and extending between the first and second face sheets, wherein the passageway is open.