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Tests of N.A.C.A. airfoils in the variable-density wind tunnel Series 24 (1932)
NASA Technical Reports Server (NTRS) · leaf 29
N.A.C.A. Technical Note No. 404 Fig. 10 % UP!R LW'E UP'Ri IW'E LW'R "20 50 11.22!-7,31| 90 0 0.00 0.00 11.59 -8.52 3.18 •1.88 1.25 3.87 601 25 1.76 i-1.06 12.15 -2.82 9.79 -8.67 -6.17i 95 70] 2.50 (-.22) (.22) 5.21 30 -4.02 -8.62 12.38 7.94 -4.87 100 5.00 7,00 40 12.16 -5.51 80 i -8.16 5.74… … Angle of attach Name of section: N.A.C.A. 2421 Reynolds No. 3,000,000 Size of model'. 5" x 30" Test: 7.D.T. 670 Pressure in standard atmospheres: 20.6 Date: Sept. 11, 1931 Wind velocity: 68.6 ft./sec. Results corrected to aspect ratio 6 in free air. Jig. 10NASA Technical Reports Server (NTRS)
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