Experimental Investigation of Wind-Tunnel Interference on the Downwash Behind an Airfoil (1937)
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relatively higher and some- used (fig. 12) are, on the other hand, in agreement with what above this region. For these cases it may be the results of the theoretical treatment for an infi- sufficiently accurate to assume that the correction is nitely long jet with bottom boundary. For a long 2:1… … 0 8 16 24 32 40 48 56 Distance behind entrance cone, ft. Distance behind entrance cone, ft. Figure 12.—Jet-boundary correction against distance behind entrance cone; tunnel Figure 13.—Jet-boundary correction against distance behind entrance cone; tunnel with ground board. with exit-cone flare…
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