Lightning and corrosion protection arrangement in an aircraft structural component

摘要

A lightning and corrosion protection arrangement for a joint between an outer metallic part (11) and an aircraft structural component (13) completely or partially made of CFRP by means of a row of metallic rivets (15), that comprise inner and outer metallic layers (21, 25) and an intermediate dielectric layer (23), the inner metallic layer (21) in contact with said structural component (13) being thinner and bigger than the outer metallic layer (21) in contact with the metallic part (11), the intermediate dielectric layer (23) extending in an area bigger than the area of the foot (12) of the metallic part (11) by a predetermined minimum linear distance D1 between its edges, the outer metallic layer (25) extending in an area bigger than the area of the intermediate dielectric layer (23) by a predetermined minimum linear distance D2 between its edges.

主权项

1. A lightning and corrosion protection system for an aircraft, the system comprising:
an aircraft structural component comprised of carbon fiber reinforced plastic, wherein the aircraft structural component defines an outer surface of the aircraft, and wherein the aircraft structural component includes an opening therethrough; a metallic part extending substantially parallel to the aircraft structural component; a metallic rivet coupling the metallic part to the aircraft structural component, wherein the metallic rivet is inserted through the opening; an inner metallic layer coupled to the outer surface of the aircraft structural component; an outer metallic layer having one side coupled to a surface of the metallic part and having an opposite side sealed directly to the inner metallic layer; and a dielectric layer interposed between the inner and outer metallic layers, wherein the inner metallic layer extends in an area greater than the outer metallic layer, the dielectric layer extends in an area greater than the metallic part and wherein the outer metallic layer extends in an area greater than the dielectric layer.