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Control surfaces chord percentage

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stanislavz

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Aug 21, 2016
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Just for better understanding. I do come to this question from this pdf : contrails.free.fr/temp/Pilot100Yrs-06-164.pdf

1605785834660.png

Smilar approach was done on Blanik ~ also on 40% of used chord. Books do suggest as general rule 20-25 %.

So the question is simple one. Taking same wing, with same area and same area of aileron, but first one is for example half span and 25% of chord (12.5% of total area), other one - 40% of chord, but 31.25 % of span..

Which one will be better, and at which points ?
 
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