Limited heat dissipation from the necessarily compact electronic equipment installations of airline aircraft has been a problem to commercial air carriers for many years. To deal with this problem, United Air Lines, in August, 1955, began equipping fleet aircraft with a forced air electronic equipment cooling system, with the following objectives: 1) improvement of electronic equipment reliability, 2) reduction of crew discomfort caused by electronic-equipment generated heat in the flight deck area, and 3) evacuation of any smoke from the flight deck area which might arise from electronic equipment failure. Observation of electronic equipment maintenance records during the subsequent transition period from convection to forced air equipment cooling shows characteristic failure rate trends which indicate the dependence of equipment reliability on operating temperature. These patterns occur independently in fleet records for the Convair 340, and DC-6 and DC-6B fleets, in time phase with the progress of conversion to forced air cooling in the fleet. These records, in conjunction with other comparative testing of forced cooled and convective cooled equipment installations indicate that forced air cooling provides an effective answer to airline equipment heat problems.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Radio Rack Cooling in Present Commercial Aircraft


    Contributors:


    Publication date :

    1958-03-01


    Size :

    2611627 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Radio equipment for commercial aircraft

    Felix, Edgar H. | Engineering Index Backfile | 1919


    Aircraft avionics cooling, present and future

    Swain, E.F. | Tema Archive | 1977


    Four-rotor aircraft rack

    HUANG XIAOMING / LIU XIAOLIANG / WEI DECHEN et al. | European Patent Office | 2020

    Free access


    Connecting structure, rack and aircraft

    JIANG LI / WU LIXIN / CHEN ZHIQIANG | European Patent Office | 2020

    Free access