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cessna 182 Control surfaces - 8/18/2012 3:29 AM   
RICMOD5634



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Status: offline 		What are all the triangle strips for on the control surfaces. I have seem them on other airplanes to. Do they actually have a perpose?
Rich















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RE: cessna 182 Control surfaces - 8/18/2012 3:36 AM   
brad59


 

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Status: offline 		They are stiffeners and allow the designer to use fewer internal parts to maintain rigidity. This keeps the weight aft of the hinge line low so it may be more easily balanced.

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RE: cessna 182 Control surfaces - 8/18/2012 1:22 PM   
larrysogla


 

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Status: offline 		Are you referring to the corrugated appearance on the control surfaces on the Cessna??? Isn't that going to increase drag???? Any increase in external surface exposed to the airstream will increase drag......yes?? no??? Well those aeronautical engineers must have tested those on the wind tunnels and the drag factor must have come out OK or they would not use them................actually on the RC Cessna models they really look good as they accentuate the control surfaces and give a nice touch to the appearance. 'Nuff said.

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RE: cessna 182 Control surfaces - 8/18/2012 2:24 PM   
thailazer



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From: Ampur Mae TaengChiang Mai, THAILAND
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quote:

ORIGINAL: RICMOD5634

What are all the triangle strips for on the control surfaces. I have seem them on other airplanes to. Do they actually have a perpose?
Rich















Ricmod..... Could you clarify a bit more on what parts you are referring to? I owned a C182 with a Horton STOL kit and part of that mod was to add small triangular assemblies on the wing which functioned as laminar air flow disrupters. This helped keep the air flow attached to the wing and lowered stall speed so one could fly slower approaches. On a model I doubt very much they would do much do to the low Reynolds number of RC model wing dynamics, but they would look scale on the right aircraft.

Edit: Sorry for the old school terminology. More recently they are called vortice or vortex generators. Here is a link....

http://en.wikipedia.org/wiki/Vortex_generator

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