The Vertical Wind Tunnel of the National Advisory Committee for Aeronautics (1931)
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rmi- eter is used to indicate the air speed. One side of this nations of the dynamic pressure distribution over the manometer is connected through copper tubing to jet and of the angularity of the air stream. Drag four static pressure orifices equally spaced around the tests of a 20-centimeter… … 0 /x/Os 2x/0s 3 x10s 4 x10s Sx/Os tance of 5 inches along the tunnel center line. The 5-inch length was given because it specifies the chord length of most of the models tested in the tunnel. Fir,uee 3.—Sphere drag coefficient vs. Reynolds number Figure 3 shows the sphere drag coefficient plotted _…
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