This sounder enables non-barometric determination of altitude by night or in fog which functions on acoustic principle of water sounder, the sound waves passing from airship to ground and return. Translated from German. See description in German in Berichte u. Abhandlungen der Wissenschaftlichen Gesellschaft fur Luftfahrt, no. 13, May 1926, pp. 56-75, 35 figs.


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    Title :

    Behm acoustic sounder for aircraft


    Additional title:

    Nat. Advisory Committee Aeronautics -- Tech. Memorandums



    Publication date :

    1926


    Size :

    5 pages


    Remarks:

    3 Figs. on Supp. plates


    Type of media :

    Report


    Type of material :

    Print


    Language :

    English






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