The interference of the wind-tunnel boundaries on the downwash behind an airfoil has been experimentally investigated and the results have been compared with the available theoretical results for open-throat wind tunnels. As in previous studies, the simplified theoretical treatment that assumes the test section to be an infinite free jet has been shown to be satisfactory at the lifting line. The experimental results, however, show that this assumption may lead to erroneous conclusions regarding the corrections to be applied to the downwash in the region behind the airfoil where the tail surfaces are normally located. The results of a theory based on the more accurate concept of the open-jet wind tunnel as a finite length of free jet provided with a closed exit passage are in good qualitative agreement with the experimental results.


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    Titel :

    Experimental Investigation of Wind-Tunnel Interference on the Downwash Behind an Airfoil


    Beteiligte:
    Silverstein, Abe (Autor:in) / Katzoff, S (Autor:in)

    Erscheinungsdatum :

    01.01.1937


    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch



    Experimental investigation of wind-tunnel interference on downwash behind airfoil

    Silverstein, A. / Katzoff, S. | Engineering Index Backfile | 1937


    Experimental investigation of wind-tunnel interference on downwash behind airfoil

    Silverstein, A. / Katzoff, S. | Engineering Index Backfile | 1937



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    J. H. Strickland / E. L. Tadios / D. A. Powers | NTIS | 1990


    Calculation of downwash behind wing

    Multhopp, H. | Engineering Index Backfile | 1938