The Resistance of Spheres in Wind Tunnels and In Air (1924)
NASA Technical Reports Server (NTRS) · leaf 12
11 THE RESISTANCE OF SPHERES IN WIND TUNNELS AND IN AIR. became necessary when it was found that the ring honeycomb, 2 by 6 inches (5 by 15 centimeters) tubes, was insufficient to counteract the torque of the propeller. The result was … Fig. 11.—Variable density No. 2 wind tunnel. naturally a coarse scale of turbulence at the test section, but, as this was only a temporary arrangement, the results need not be taken to indicate that a turbulent condition will exist in future testing. Fio. 12.—Resistance ot sphere in variable…
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