Airfoil section characteristics as applied to the prediction of air forces and their distribution on wings (1938)
NASA Technical Reports Server (NTRS) · leaf 22
a chord joining the extremities determinations of stalling speeds. The Reynolds Num- of the mean line, the N. A. C. A. 2412, for example; ber corresponding approximately to the stalling speed B designates the chord as being tangent to the lower is first determined. Then from the curve of figure 20… … fteyno/ds Number- To obtain the section maximum lift coefficient at the desired Reynolds Number, apply to the standard-test value the increment indicated by the curve that corre- sponds to the scale-effect designation of the airfoil. For type A, Acj =0. Figure 20.—Scale-effect corrections for cima…
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