The Effects of Shielding the Tips of Airfoils (1925)
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ed drag never became large. To the tips of this airfoil, then, disks of 4 in. diameter were attached. They were made from re in. sheet aluminum and shaped as zones of a large diameter sphere. Figure 2 is a photo- graph of the combination ready for test. In an effort to reduce the parasite drag of… … Fig. 4 RESULTS AND DISCUSSION The data obtained by tests of the thin plate with its various modifications are given in Tables I-V; Figures 5-8 are plotted therefrom. While no numerical analysis has been made, the effects of the modifications arc ({uite evident upon inspection. From Figure 5 it may…
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