Equations (27) and (29) are plotted in figures 5 and 6, speed for minimum power required for the corre- sponding ideal airplane, the theoretical power-required respectively. In these figures the curves labeled A, variations are still followed by the actual airplane at should be used. The other… … AorA„ Figure 6.—The ratio R'XP- VurlV. as a function of A. Now consider the case of the actual airplane with actual modern airplanes has been investigated for which complete wind-tunnel data were available, and normal airplane characteristics. The solid curves in figure 7 present the thrust power…
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