Hello everyone,
I went to the selig website to look up some airfoils and the polars are
completely greek to me. How do you interpret the data? Is there any
website that explains how to read a polar. I am not an aeronautical
engineer so I need a practical explanation if possible. I have seen a book
called understanding polars without math. Anybody read it? I would really
like to learn what makes some airfoils are better than others, and make an
informative decision on which airfoil to choose rather than what everbody
else uses.
Currently, my TD airfoil of choice is the SD7075. I prefer it to the SD7037
as it seems to have a bit more range, responds to camber well and will still
slow down almost as slow as the SD7037 when thermaling. This decision is
based solely on my flying style and personal experience and I am sure others
will dissagree with me. I would however love to learn why one airfoil suits
my flying style than another?
Any information will be greatly appreciated,
Marc Webster
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