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Jay Kempf

Curmudgeon in Training (CIT)
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I am looking at an airfoil from Stuttgarter Profilkatalog 2: AH 93 K 132/15

Does anyone have flapped polars for this airfoil for at least flapped CD vs. Alpha and CL vs. Alpha either tabular or graphical.

Or more generally does anyone have an online source for the Profilkatalog 2?
 

Jay Kempf

Curmudgeon in Training (CIT)
Lifetime Supporter
Joined
Apr 13, 2009
Messages
4,381
Location
Warren, VT USA
Airfoil tools does list it here, but not with flaps.

This is something XFLR5 would do, at least for plain flaps.
Found the polars with flaps in the designed neutral position which is designed in reflex. This position gives low CD at low CM at very low Alpha. The airfoil design is very critical for AOA and flap position to get its performance so the relationship of the flap settings to CL and CD are of most importance. I'm building a virtual wind tunnel to cycle all of this stuff through but I need the polars for verification. The flaps somewhat plain but the height of the hinge line is a bit of a mystery right now as well. So tracking down where used cases for design details.
 
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