Stock material or miscellaneous articles – Structurally defined web or sheet – Continuous and nonuniform or irregular surface on layer or...
Patent
1988-03-10
1989-04-25
Ives, P. C.
Stock material or miscellaneous articles
Structurally defined web or sheet
Continuous and nonuniform or irregular surface on layer or...
428 99, 428167, 428179, 428213, 428414, 428432, 428433, 244 1A, 244133, 361218, 361117, 361212, 174 2, B32B 516, B32B 1508, H02H 322, B64C 100
Patent
active
048247138
ABSTRACT:
Lightning protection apparatus for an exterior structural surface includes an electrically insulating protective coating adhered to the exterior surface, and a plurality of conductive particles supported in the coating. The particles are spaced at distances greater than the dimension of the particles in a direction parallel to the surface. The dielectric strength of the coating is thereby weakened by bridging the thickness of the coating with the particles. This enables lightning attachment to occur at a multiplicity of points rather than at one point, thereby reducing interior sparking in an aircraft and minimizing structual damage to the surface of the aircraft.
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SAE Technical Paper, "Protection Against the Direct Effects of Lightning Strikes for a Carbon Fiber Composite Aircraft"--by McClenahan et al. (Apr. 1983).
Ives P. C.
The Boeing Company
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