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Some experiments on autorotation of an airfoil (1929)
NASA Technical Reports Server (NTRS) · leaf 17
N.A.C.A. Technical ITote No. 319 FigB.10,11. 0° 10° 20° 30° 40° 50° 60° 70° 80° 90° Angle of attack,a Fig. 10 "R" vs cc, aspect ratio 4.95 … Fig. 11 Effect of aspect ratio arid yaw on "R". Curves give peak values (cc 20° to 30°)NASA Technical Reports Server (NTRS)
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