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Tests of Large Airfoils in the Propeller Research Tunnel, Including Two with Corrugated Surfaces (1930)
NASA Technical Reports Server (NTRS) · leaf 9
8 REPORT NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS … DC or Figure 5.—Clark Y, plywood covered. Aspect ratio 6. Free air Figure 7.—Clark Y, metal covered, painted. Aspect ratio 6. Free air CL CD 2.2 .56 2.2 .56 2.0 .52 2.0 .52 1.8 .48 1.8 .48 L 1.6.44 ± D 1.6 .44 28 .4 .40 28 24 1.2 .36 24 20 1.0 .32 20 1.0 .32 16 .8 .28 16 .8 .28 12 .6 .24 12 .6 .24…NASA Technical Reports Server (NTRS)
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