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Old Nov 19, 2012, 09:52 AM
Don Stackhouse is offline
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United States, OH, Bradford
Joined Jun 2005
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Quote:
Originally Posted by captarmour View Post
Would love to try an 8% to 10% version on a flying wing. She has her reflex up front!

http://airfoiltools.com/images/airfoil/s823-nr_l.png

http://airfoiltools.com/airfoil/details?airfoil=s823-nr
Looks pretty awful to me.

Performance at low Re's is all over the map. Cm is low, but only because the airfoil is just randomly churning air. At higher Re's, the Cm is fairly high (as could be expected from all that aft loading), and that "reflex at the front" is actually making it worse.

Not clear what they were trying to accomplish with this section.
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