Arc suppression around fasteners
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United States of America Patent
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-
Mar 6, 1990
Grant Date -
N/A
app pub date -
Feb 18, 1988
filing date -
Feb 18, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A volume of gas is enclosed by a cap around a fastener that is through a composite structure on an aircraft. The gas provides spark suppression for arcing that may occur between the composite structure and the metal fastener during a lightning strike. The volume of gas is sufficiently large to absorb the energy of small, very hot particles of graphite, epoxy, etc., that may be present resulting from arcing. High-pressure gas regions between the fastener and composite member vent to the larger volume of gas and are absorbed. This provides effective spark suppression for particular areas in an aircraft, such as a fuel tank, etc.
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