Abstract The present invention relates to a method and device for monitoring performance of an auxiliary power unit (APU) turbine efficiency of an aircraft. The method comprises: obtaining APU messages at multiple time 5 points within a period; obtaining APU startup parameters including at least a rotation speed at a peak of EGT according to the APU messages; calculating a percentage NPA of the rotation speed when the exhausting gas temperature EGT reaches its peak at the APU startup stage relative to the rotation speed in the APU normal operation; calculating the average of the o NPA within the period; and determining which of the stable, decline and failure phases the APU turbine efficiency is in according to the average of the NPA. 300 200 100 2100 120 130 310 -- Figure 1


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    Titel :

    Method and apparatus for monitoring efficiency of aircraft auxiliary power unit


    Beteiligte:
    GU ZHUPING (Autor:in) / ZHANG CHI (Autor:in) / HUANG LEI (Autor:in) / DING HUIFENG (Autor:in) / WU JIAJU (Autor:in) / ZHANG YANFENG (Autor:in) / MA HONGTAO (Autor:in) / CHEN LEI (Autor:in)

    Erscheinungsdatum :

    2017-12-21


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / F02C Gasturbinenanlagen , GAS-TURBINE PLANTS



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