General Potential Theory of Arbitrary Wing Section (1934)
NASA Technical Reports Server (NTRS) · leaf 24
ines through M at angles j3 and y to the x axis as the first and second axes b2 a point F whose radius vector from M is ^«2t_?> *Ge of the airfoil, respectively. (Fig. 1#.) The directions of these axes alone are important and these are fixed moment existing at F is for all angles of attack con-… … airfoil (axes and lift parabola of the E. A. F. 19 airfoil) Figure 18.—Illustrating the geometrical properties of an It has thus been shown that with every airfoil pro- the sine of twice the angle of attack with respect to file there is associated a point F for which the moment the second axis. is…
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