The Royal Netherlands Air Force has experienced performance loss and increased rate of inflight compressor stalls due to compressor deterioration on some of their 15 year old engines. Investigations on the Maintenance Depot test bed showed that significant loss of air mass flow occurred near the surge line under conditions which were not covered by the normal post-overhaul acceptance tests. It was also found that impending stall was always produced by increasing pressure fluctuations, although the level of these pressure fluctuations varied with different engines. A method was developed to routine check for this phenomenon. The surge margin of the affected engines was recovered by replacing the rear compressor casing. Further investigation, conducted by the engine manufacturer to narrow down the reason for the engine's behavior, is discussed.


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    Titel :

    Handling Problems Resulting from Compressor Deterioration


    Beteiligte:

    Erscheinungsdatum :

    1978


    Format / Umfang :

    11 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch