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  #1  
Old 04-15-2009, 05:26 PM
bryanflood's Avatar
bryanflood bryanflood is offline
 
Join Date: Aug 2006
Posts: 114
Default Upper wing skins oil canning

The other day I was wiping the winter grunge off the upper wing skin of my RV-9A and I noticed the outer (by the tips) upper wing skin panels seemed to be more "oil canny" than I remember. It's normal for people to go insane during the long Minnesota winters, so perhaps the skins have always been like that. There has always been some clink-ity, clink-ity when the skins are wiped. For you 9 lovers out there how much if any "oil canning" do you notice on the top wing skins?

Bryan
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  #2  
Old 04-17-2009, 09:41 AM
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n2prise n2prise is offline
 
Join Date: Jan 2005
Location: Palm Bay, FL
Posts: 420
Default Upper wing skins on RV-9A...

Bryan,

Take a look at my left wing in this photo. In flight, the skins rise up between the ribs, stiffeners, and spars due to the low pressure above the wing in flight. It is a reminder from Bernoulli why our wings lift us off terra firma.


By the way, this photo was taken on my first flight to Oshkosh in 2005. See this web page for the full story of that flight.
http://www.n2prise.org/rv9a151.htm
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Jerry K. Thorne
Built in East Ridge, TN.
Now in Palm Bay, Florida
RV-9A - - N2PZ
www.n2prise.org
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  #3  
Old 04-17-2009, 11:23 AM
rv72004 rv72004 is offline
 
Join Date: Nov 2005
Posts: 452
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If you jack up a plane it also does this. ie when the jacks are under the wings.
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RV7 flying
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