The Effects of Shielding the Tips of Airfoils (1925)
NASA Technical Reports Server (NTRS) · leaf 8
rprising to see the results obtained from the tests with the disk end plates on the N. A. C. A. 73. These data are given in Tables VI and VII and plotted in Fig. 9. The improvement is of exactly the same nature as that obtained with the flat plate, i. e., the maximum lift coeriicient is increased… … .00 .04 .08 .18 .16 .80 . 00 .04 .08 .12 .16 .80 Co Co Fig. 9 Fig. 10 Thinking it possible to reduce the parasite drag of the ])lates by reducing their })i-()jected area and still maintain the greater part of the beneficial effect, the circular plates were sup- planted by trapezoidal ones. As shown…
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