The Effect of Surface Irregularities on Wing Drag. I. Rivets and Spot Welds. 1; Rivets and Spot Welds (1938)
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Figs. 10,11 N.A.CA. Percentage of rivef drag elimihofed by removing all rive Is forward of lines 20 30,50 60 90 'Upper and lower surfaces of equal value back of 27 percent chord I I I I I I T I I I I 100 30 40 50 60 70 80 90 O 10 20 Percentage chord Figure 10. … Figure II.
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