An anchor for lightning protection systems include a base and pad that extend over a sufficient area and a sufficient bearing length to hold in shear and in tension against the weight, shear force, and moment of cables, points, and other components of a lightning protection systems. The mounting anchor is non-penetrating, and adheres to a vertical surface almost immediately without requiring damage to structures, long term support over days waiting for cure, and works in overhang situations as well. An integrated clip may be constructed with the base from sheet material. Adhesion of the base to a cover material on a wall or parapet may be promptly followed by snapping cable into clips formed monolithically with the base.

Provided in the present disclosure is an arc compression-based arc-extinguishing lightning-protection gap device. The device comprises a lightning protector main body and an arc-striking electrode. The arc-striking electrode is fixedly mounted at one end of the main body. The other end of the main body is fixedly mounted, by means of a link fitting, to a crossarm or one end of an insulator string. The lightning protector main body is provided with an arc-extinguishing path consisting of several arc-extinguishing channels in a repeated Z-shaped arrangement. An arc-extinguishing tube at an inlet of a first arc-extinguishing channel of the arc-extinguishing path is connected to the arc-striking electrode via an arc-guiding rod, and an arc-extinguishing tube at an outlet of a last arc-extinguishing channel is connected to the link fitting. A three-way tube is provided at a joint of two adjacent arc-extinguishing channels; two ends of the three-way tube are each provided with one arc-guiding electrode; and the arc-guiding electrode has one end extending into the three-way tube and the other end connected to a nearby arc-extinguishing tube via direct contact or a wire. The present disclosure has the advantages of simple structure, reasonable design, improved arc-extinguishing performance, and stable operation.

A dual protection inner seal washer employs a radially outward metallic portion having a dielectric coating and a radially inward polymeric portion engaging the metallic portion at an interface with an interference fit. The polymeric portion has at least one tapering compression surface to engage a surface of a structure proximate a hole and further has a fastener element contact surface to engage a mating surface on a fastener system element. Torqueing of the fastener element compresses the at least one compression surface inducing a predetermined pressure in the polymeric portion in a joint created by the fastener element and structure.

The present invention relates to a static discharger, an aircraft, and an installation process for the static discharger. According to an aspect of the present invention, a static discharger is provided which includes: a basement; and a discharger body installed to the basement. An installation orientation adjusting mechanism is provided between the basement and the discharger body, and the installation orientation adjusting mechanism allows the discharger body to be rotationally orientated, with respect to the basement, to a predetermined installation orientation during an on-site-installation of the static discharger. The static discharger further includes a first fixing mechanism adapted to fix the discharger body, which has been oriented to the predetermined installation orientation, to the basement. According to the present invention, for example, installation adaptation and universality of the static discharger and adjustment and determination of installation orientation of the static discharger can be improved.

A wind turbine rotor blade has a blade root, a lightning protection conductor for dissipating a lightning current toward the blade root, a suction side, a pressure side, a lightning receptor arranged on the suction side, a lightning receptor arranged on the pressure side, and an integrally formed lightning receptor base, which is arranged in the wind turbine rotor blade and on which the two lightning receptors and the lightning protection conductor are fastened, wherein the lightning receptor base includes two fastening rings, which each have an internal thread, into which one of the two lightning receptors is screwed, and an outer diameter and an outer side, wherein the outer sides of the fastening rings are arranged with a spacing of less than one outer diameter from one another.

A multifunctional surfacing material capable of providing lightning strike protection (LSP) and burn-through resistance. In one embodiment, the multifunctional surfacing material is composed of a conductive layer positioned between two resin layers, at least one of which contains one or more fire retardant compounds. In another embodiment, the multifunctional surfacing material is composed of a conductive layer positioned between two resin layers one of which is a thermally-stable layer. The surfacing material is co-curable with a composite substrate, e.g. prepreg or prepreg layup, which contains fiber-reinforced matrix resin.

A one-part or two-part air terminal for protecting a structure against lightning strikes. A flexible adapter, such as a spring, attaches an upper air terminal to a lower air terminal or a one-piece air terminal and base. The flexible adapter allows a flexible engagement between parts of the air terminal and has an internal passageway. A elongate tether couples parts of the air terminal in case the upper air terminal or one-piece air terminal breaks, so as to avoid a broken part from injuring individuals around. The elongate tether may be a ball chain or other type of chain. The elongate tether runs through the internal passageway of the flexible adapter. A base mounts to the one-part or two-part air terminal and mounts the air terminal to the structure. A grounding wire grounds the base to the grounding rod.

A lightning protection system of an aircraft includes a wall defining an inner surface and an outer surface. The outer surface is configured to come into contact with a mass of air located around the aircraft. The lighting protection system also includes at least two electrically conductive lighting traps received in holes traversing the wall and at least one strip with pellets having an electrically insulating substrate and electrically conductive pellets spaced apart from one another on the electrically insulating substrate. The strip with pellets is fastened on the wall by the two lightning traps. The strip with pellets is attached on the inner surface of the wall.

A charge dissipation plate for aircraft electronic systems having a metal plate with machined through openings. A collar is integrally formed with each through opening. The collar extends upwardly from the plane of the plate and includes a threaded outer surface for receiving an electronic connector.

A system or method for monitoring an electric power lightning arrester including an arrester current sensor providing an arrester current measurement, and an arrester voltage sensor providing an arrester voltage measurement. The system detects a switching signature based on the arrester current measurement or the arrester voltage measurement distinguished from background noise and lightning signatures and computes a measured arrester impedance based on the arrester current and arrester voltage measurements. The system then compares the measured arrester impedance to a nominal or historical arrester impedance, determines that the arrester is faltering based on the comparison of the measured arrester impedance to the nominal or historical arrester impedance, and places an order for replacement of the arrester based on the determination that the arrester is faltering. The system operator then replaces the arrester during a fair-weather, typically off-peak period to avoid failure of the arrester during a lightning strike.