Leading Edge fences

Date:         08 Sep 97 02:03:41 
From:         baejs3201@aol.com (BAEJS3201)
Organization: AOL http://www.aol.com
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Hey out there can anyone answer a question for me??? I've noticed that
aircraft with aft mounted engines(727,DC9/MD80 and maybe Fokkers)have what
looks like a fence on the leading edges of the wings. Is this to straighten
the airflow for the engines????

Thanks
David