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Lightning discharge protection rodA system for protecting an in-air vehicle from damage due to a lighning strike is disclosed. It is an extremely simple device consisting of a sacrificial graphite composite rod, approximately the diameter of a pencil with a length of about five inches. The sacrificial rod is constructed with the graphite fibers running axially within the rod in a manner that best provides a path of conduction axially from the trailing edge of an aircraft to the trailing end of the rod. The sacrificial rod is inserted into an attachment hole machined into trailing edges of aircraft flight surfaces, such as a vertical fin cap and attached with adhesive in a manner not prohibiting the conduction path between the rod and the aircraft. The trailing end of the rod may be tapered for aerodynamic and esthetic requirements. This rod is sacrificial but has the capability to sustain several lightning strikes and still provide protection.
Document ID
19880004701
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Bryan, Charles F., Jr.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 13, 2013
Publication Date
October 6, 1987
Subject Category
Air Transportation And Safety
Report/Patent Number
Patent Number: NASA-CASE-LAR-13470-1
Patent Number: US-PATENT-4,698,723
Patent Application Number: US-PATENT-APPL-SN-855983
Accession Number
88N14083
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-LAR-13470-1|US-PATENT-4,698,723
Patent Application
US-PATENT-APPL-SN-855983
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