Rendegade,
I have to write in English and is often not understand, this was my description.
ORIGINAL: Taurus Flyer
David,
Not fully sheeted wings does have the problems of the distortion of the airflow over the airfoil. Round holes in the LE does generate two more points and curve of distortion on different areas over the part of the wing with the highest differential pressure.
Message shortened by Taurus Flyer
Cees
See your picture, 1 and 2 (two more points on different areas) , but, WITH the sucking pressure curve 3!!! The curve can have any shape, more of less bending!, than the airfoil over that distance.
Cees