Corrosion of an aircraft radar antenna waveguide

Condensed moisture from ingressed humid air was responsible for inducing corrosion within the aft radar antenna from an RAAF P-3C Orion maritime surveillance aircraft. Porosity in the silver-plating of a flexible brass waveguide allowed moisture to penetrate to the brass substrate and cause dezincif...

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Bibliographic Details
Published in:Engineering failure analysis 2002-08, Vol.9 (4), p.423-434
Main Authors: Russo, S.G, Henderson, M.J, Hinton, B.R.W
Format: Article
Language:English
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Summary:Condensed moisture from ingressed humid air was responsible for inducing corrosion within the aft radar antenna from an RAAF P-3C Orion maritime surveillance aircraft. Porosity in the silver-plating of a flexible brass waveguide allowed moisture to penetrate to the brass substrate and cause dezincification. The moisture also induced corrosion of some of the AA-6061 aluminium alloy waveguides. An investigation determined that moisture ingress occurred at a waveguide flange, possibly from the failure of a seal.
ISSN:1350-6307
DOI:10.1016/S1350-6307(01)00028-0