The 7 by 10 Foot Wind Tunnel of the National Advisory Committee for Aeronautics (1933)
NASA Technical Reports Server (NTRS) · leaf 7
the cross-wind force scale Cc. The floating framework and the scale platforms are The scale heads and platforms used in the balance enclosed in fairings to eliminate balance windage. are of commercial design. The scales are special in The lift, drag, cross-wind force, and pitching-mo- that they all… … Figure 4.—Force-test set-up in tunnel deflection will not introduce an appreciable error in of cD may be determined to within ± 0.0005 owing to the results.) The indicating dials of the scales are espe- the steady conditions of this test. Rolling and yawing cially graduated and special weights are…
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