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Old 20-11-2009, 06:23 AM
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stephenb (Stephen)
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Kopp-Etchells Effect on rotor blades

I was sent these images last night and decided to investigate them. I have spoken to a friend who's son is serving in the US armed forces and they are aware of this phenomenon also.

There are many references to the Kopp-Etchells effect on the internet and it appears to be a common occurance in sandy environments.

Here is a more in-depth article at www.military.com

I thought this might be of interest to some of the aviation folk on IIS.
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Last edited by stephenb; 20-11-2009 at 07:11 AM. Reason: Repaired link and added correct image
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