Lighting resistant composite structures

Details Lighting resistant composite structures Lighting resistant composite structures

1990-10-26

1992-12-29

Pellinen, A. D.

Electricity: electrical systems and devices

Discharging or preventing accumulation of electric charge

Structurally combined with building or vehicle

244 1A, 244132, B64C 112

Patent

active

051756650

ABSTRACT:
A lightning resistant composite structure, particularly for aircraft, in which a composite skin panel, for example of carbon fibre, is attached to an inner composite structure by one or more lightning resistant fastener assemblies. The fastener assembly comprises a nut and bolt, the bolt being in good conductive contact with a conductive sleeve engaging the skin panel and a non-conductive sleeve engaging the inner structure. The nut is contained within a capped nut assembly located to the undersurface of the inner structure.
The non-conductive sleeve and the capped nut assembly isolate the inner structure from the effects of lightning strike, the conductive sleeve providing a high quality conductive interface between the bolt and the skin panel. By this means adverse penetration of lightning current into the inner structure is prevented.

REFERENCES:
patent: 4502092 (1985-02-01), Bannink, Jr. et al.
patent: 4755904 (1988-07-01), Brick
patent: 4891732 (1990-01-01), Jones
patent: 4905931 (1990-03-01), Covey

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