o drawn tangent to upper camber of the Claris: Y section Line AB was at A, 65$ of th t-3 - / . chord. Line BD was drawn bisecting angle ABO. The CD i Clark 1 section ASO ?ras then rotated about line BD after part of ti O as an axis to the position OFA. With the trailing ecl^e out to 0, CiVt making… … ^ \ 100$ Chord \ Axis of rotation Fig.l Development of the N.A.C.A. CYH airfoil section,
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