Ultra-thin metallic foil for lightning strike protection
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United States of America Patent
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Jul 16, 2019
Grant Date -
Sep 13, 2018
app pub date -
May 8, 2018
filing date -
May 8, 2018
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Abstract
A metallic foil for lightning strike protection in a composite aerospace structure having a length, a width, and a thickness of not more than 30 microns. There are a plurality of pores of a predefined geometric shape extending through the thickness of the metallic foil and being distributed across a surface area defined by the length and the width of the metallic foil. The plurality of pores in the aggregate define an open area of not more than 40% of the surface area and the metallic foil has a weight of not more than 115 g/m2. The metallic foil has a weight to conductivity ratio of not more than 0.40 gram-ohms per square.
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