Lightning protection sheet with patterned discriminator
First Claim
1. A lightning protection sheet comprising an electrically conductive film having thickness t and an electrically non-conductive first discriminator layer having thickness TDL over the electrically conductive film, where the first discriminator layer is patterned into a plurality of valley features having a depth d of between 50% and 100% of TDL, additionally comprising an electrically non-conductive second discriminator layer covering portions of the first discriminator layer, where the first discriminator layer has a first dielectric breakdown strength and the second discriminator layer has a second dielectric breakdown strength that is less than 90% of the first dielectric breakdown strength.
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Abstract
A lightning protection system is provided, typically for use on an outer surface of an aircraft, which includes the use of a lightning protection sheet that includes an electrically conductive film and at least one patterned, electrically non-conductive discriminator layer.
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Citations
8 Claims
- 1. A lightning protection sheet comprising an electrically conductive film having thickness t and an electrically non-conductive first discriminator layer having thickness TDL over the electrically conductive film, where the first discriminator layer is patterned into a plurality of valley features having a depth d of between 50% and 100% of TDL, additionally comprising an electrically non-conductive second discriminator layer covering portions of the first discriminator layer, where the first discriminator layer has a first dielectric breakdown strength and the second discriminator layer has a second dielectric breakdown strength that is less than 90% of the first dielectric breakdown strength.
Specification