|02-03-2007, 01:50 PM||#1|
I am: grant
Join Date: Dec 2003
Location: churchbridge, sask
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what airfoil for a 1/4 scale citabria??
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hello all.. asking this question again, as the last time i asked it, there was no response.
I have an old nosen citabria kit, but the original was a 3 channel with no ailerons, and a flat bottom, clark Y airfoil. I want to change the airfoil on the wings and wondering what kinda airfoil to use. A semi symetrical or a fully semetrical.
I am looking for some ideas or an actual airfoil to use on this plane. I would like it to be able to perform some scale maneauvers, and fly decently.And have ailerons.
Has anybody done this, or built a larger sized citabria/ decatolon, and can tell me what airfoil was used or better yet, give me a copy of the airfoil.
|02-03-2007, 02:36 PM||#2|
I am: Kevin C.
Join Date: Jan 2007
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The real Citabria used a NACA 4412 and the real Decathlon used a NACA 1412. Those are the same thickness forms, but the 4412 has 4% camber, and the 1412 has 1%, so it is far more symmetrical.
A pretty good list of airfoils of real airplanes:
GIFs and coordinates for these and most other airfoils can be found here:
Both these airfoils work quite well at lower Reynolds numbers, and with a 1/4 scale model would give pretty good scale like performance.
Of course, more modern model airfiols could perform better. I could dig out my Selig/Donovan data to pick one for you if you are interested in the ultimate aerobatic performance. The real airfoils would likely be great on a 1/4 scale, and scale too!
PS: here is good description of both aircraft in detail:
|02-03-2007, 04:08 PM||#3|
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I am: Brad Kacer
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|02-04-2007, 09:02 AM||#4|
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