a, Entrance cone b, Adjusting device for horizontal alignment of entrance cone, cf Exit cone mouth, d, Adjusting device for axial shift- ing of exit cone mouth. e, Deflectors or guide vanes. f, Fan blades,, g, Contra-vanes. h9 Hub fairing. if Support of fan. kt Honey coiub. 1, Flaps for speed… … i Figure 2.- Vertical sections of the wind tunnel.
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