A study was made at the National Advisory Committee for Aeronautics Laboratory of the operation of an electrically heated glass panel, which simulated a segment of an airplane windshield, to determine if ice formations, which usually result in the loss of visibility, could be prevented. Tests were made in the 7- by 3-foot ice tunnel, and in flight, under artificially created ice-forming conditions. Ice was prevented from forming on the windshield model in the tunnel by 1.25 watts of power per square inch with the air temperature at 23 F and a velocity of 80 miles per hour. Using an improved model in flight, ice was prevented by 1.43 watts of power per square inch of protected area and 2 watts per inch concentrated in the rim, with the air temperature at 26 F and a velocity of 120 miles per hour. The removal of a preformed ice cap was effected to a limited extent in the tunnel by the use of 1.89 watts of power per square inch when the temperature and velocity were 25 F and 80 miles per hour, respectively. The results indicate that service tests with an improved design are justified.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Investigation of an Electrically Heated Airplane Windshield for Ice Prevention, Special Report


    Contributors:

    Publication date :

    1939-03-01


    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




    Electrically heated windshield

    MOUROU JULIEN P / GARG RACHIT / MARTINEZ OSCAR RAMON GABRIEL et al. | European Patent Office | 2023

    Free access

    ELECTRICALLY HEATED WINDSHIELD

    MOUROU JULIEN P / GARG RACHIT / MARTINEZ OMAR RODRIGO GARCIA et al. | European Patent Office | 2023

    Free access

    Investigation of prevention of ice on airplane windshield

    Rodert, L.A. | Engineering Index Backfile | 1940


    Investigation of prevention of ice on airplane windshield

    Rodert, L.A. | Engineering Index Backfile | 1940


    Assessing the Performance of Electrically Heated Windshield

    Aroussi, A. / Hassan, A. / AbdulNour, B. S. et al. | SAE Technical Papers | 2002