CAP, FASTENED STRUCTURE USING SAME, AND AIRCRAFT HAVING SAID FASTENED STRUCTURE

摘要

There is provided a cap capable of achieving enhanced safety by inhibiting the occurrence of sparks thereinside even if a lightning current has flowed through a fastener, a fastening structure using the same, and an aircraft including the fastening structure. A cap (27) according to the present invention is attached so as to cover a portion of a fastener (15) that couples an upper skin (3) of an aircraft and a stringer (11) located inside the upper skin (3), the portion projecting through the stringer (11), wherein an outer surface (33) of the cap that comes into contact with an interior space of the upper skin (3) is a curved surface, and the cap is made of a conductive material.