Looked like Michael is right. According to Profili, it's VERY similar to
the RG-15. I checked it out at re*sqrt(CL)=100k and 150k. (That is,
equivalent to a sailplane which is at Reynold's number of 100k and 150k
when flying at Cl of 1) The two lines are just about right on top of
each other. HN-216 appears microscopically better between Cl of 0.1 and
0.8, very slightly worse above Cl of 0.8. But I'm guessing one swipe
with 220 grit sandpaper would make more difference! I didn't check with
flaps and perhaps the program would show a difference there.
(Profili is a user friendly interface for Xfoil.)
Richard Burnoski wrote:
Ok guys, Can anyone tell me anything about the way this airfoil =
performs?
HN-216
In speed ? In duration? In distance?
What airfoil would it compare to of the ones we use now?
So many airfoils so little time. Thanks, Richard
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