Two practical methods for the calculation of the horizontal tail area necessary for a statically stable airplane (1929)
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Technical Note No. 79 (Reference 2). Briefly, this method is as follows: The difference between the induced angles of attack for two aspect ratios is Aa= {a,-a,) =^^[(^-(t^] 1^") Where Si and are the total areas of the wings having respective maximum spans 6i and 62, and h and h are Munk's factors… … r-^j. J- J _/- (kxSpanl^ EffecTive aspect rar/o, n = —/^^-ea Fig. 2.—Slope of lift carve, variation with aspect ratio ACi being any convenient increment of lift. Equation (10) shows that Aa is positive or nega- dC tive according as the effective aspect ratio is decreased or increased. therefore…
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