An inlet was designed for a tilt nacelle lift/cruise fan. A complete set of low speed data was obtained with a 38-cm diameter cold-flow model, and a partial set of data was obtained with a 140-cm-diameter inlet coupled to a high bypass turbofan. The results indicate that a fixed-geometry inlet is a viable concept for the proposed application. Analyses of the data demonstrate that at high angles of incidence and at low airflow rates inlet-flow separation is strongly sensitive to Reynolds number and, consequently, the large-scale inlet has a significantly greater range of separation-free operation.


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    Title :

    Fan inlet for a V/STOL airplane


    Contributors:
    Koncsek, J. L. (author) / Syberg, J. (author)

    Conference:

    Propulsion Conference ; 1977 ; Orlando, FL, US


    Publication date :

    1977-07-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




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