Abstract: A lightning diverter strip is provided with button elements in the form of diamond-shaped conducting segments which arranged longitudinally on the strip in spaced-apart relation, with the sharp corners of each of the button conductive elements in longitudinal alignment with each other and with the opposite corners presented along the edges of the strip. The spacings of the conductive elements at the corners may be varied so that some of the elements are spaced more closely together than are other ones of the elements, to provide a lightning diverter strip having a lower break-down voltage potential.

Abstract: An improved arc gap structure for a lightning arrester comprises first and second annular electrodes concentrically arranged relative to one another. The first electrode has a generally cylindrical inner surface which tapers to a smaller diameter toward one end. The second electrode has a generally cylindrical outer surface which is sized to be spaced apart from the inner surface of the first electrode when received therein. The electrodes are axially displaced relative to one another such that the spacing between the upper corner of the second electrode and the tapered portion of the first electrode define the ignition arc gap for the lightning arrester. The second electrode is preferably axially adjustable relative to the first electrode to select a desired arc over voltage for the lightning arrester.

Abstract: An aircraft static discharger and mounting structure therefor is disclosed formed of non-metallic conductive material, such as carbon filled nylon, for mounting an aircraft static discharger onto a graphite and/or boron composite aircraft skin. The discharger includes a mounting structure formed as a sub-base having a lower surface provided with downwardly extending conical projections terminating in points which engage the underlying graphite composite surface and form electrical contact therewith, providing for the mounting of the sub-base to the composite surface by conventional non-conductive epoxy. A surface conductive to lightning currents is provided by bonding powdered aluminum to the outer surfaces of the discharger base and the sub-base which, together form a lightning diverter strip formed on the discharger, transfer lightning currents over the surface of the base and sub-base to the underlying aircraft structure.

Abstract: A lightning diverter strip for use on aircraft components has a polyester tape base onto which is bonded by an epoxy a coating or layer of uniformly dispersed powdered aluminum.

Abstract: A static discharger for use on aircraft includes an elongated nylon body, and an internal resistance element is in the form of a fiber glass rod having conductive coating thereon received within an elongated opening formed in the body. The remote end of the conductive rod is mechanically and electrically bonded to a transversely oriented tungsten corona discharge needle, while the inner end of the rod is mechanically and electrically connected to a mounting base portion through a spring arrangement by means of which the differences in thermal coefficients of expansion between the body and the rod are accommodated. In one embodiment a stainless steel coil spring is used, and in another embodiment, the spring takes the form of a block of conductive rubber. A lighting diverter strip is formed along an outside surface of the nylon body.