Since introduction into service, the B737-300 starter has been susceptible to clutch damage. At the onset of the problem, a team was formed to identify the causes of clutch damage and shear shaft failures and to define a corrective action. Several in-service airplanes were equipped with recording instrumentation, and data from over 10,000 start cycles was recorded. It was noted that large pneumatic duct pressure fluctuations from a variety of causes played an important role in the reason for the starter reliability problem. After understanding the problem, a design improvement program was launched to replace the current pawl-and-ratchet clutch with an inner-race overrunning sprag clutch that would be capable of withstanding resulting duct pressure fluctuations.


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    Titel :

    Enhanced Air Turbine Starter Clutch Design


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    Aerospace Technology Conference and Exposition ; 1994



    Erscheinungsdatum :

    1994-10-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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