Details of Alexanderson radio altitude indicator and magnetic compass given in papers presented by E. F. W. Alexanderson and J. D. Tear, respectively, before National Academy of Sciences; new method of measuring height above ground of plane in flight, using high-frequency radio transmission and reception; in magnetic compass, bar of permalloy is held constantly in horizontal position by means of pendulum which hangs vertically, irrespective of angle at which airplane may be flying.


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    Title :

    Airport and airway


    Additional title:

    Aero Digest


    Contributors:

    Published in:

    Aero Digest ; 14 , n 1


    Publication date :

    1929


    Remarks:

    2 Figs.


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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