Aircraft lightning protection means

Details Aircraft lightning protection means Aircraft lightning protection means

1975-07-11

1976-11-02

Envall, Jr., R. N.

Aeronautics and astronautics

Aircraft sustentation

Sustaining airfoils

317262R, 244 1A, H05F 102

Patent

active

039899845

ABSTRACT:
Lightning protection means for aircraft structural components includes thin, perforated, dielectric and metallic layers applied to the ordinarily lightning-accessible surfaces of composite structures. Where the outer metallic layer of the lightning protection means is formed from sprayed metal, ground connection means to the metallic layer preferably comprises a section of wire screen fused with the sprayed metal on the dielectric layer, a thin metal plate brazed to the wire screen, and a metal attachment connecting the metal plate to adjacent ground structure. Composite-to-metal or composite-to-composite structural joints are protected by making the entire bonded and bolted interface areas conductive for transfer of lightning current, or by isolating the bonded interface area to control the transfer path of the lightning current through the bolted interface area only.

REFERENCES:
patent: 3532932 (1970-10-01), Simon
patent: 3755713 (1973-08-01), Paszkowski

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