A low speed wind tunnel test demonstrated the aerodynamic and acoustic performance of a scoop inlet. Engine noise is directed upward by the extended lower lip of the scoop inlet. In addition, more of the scoop airflow comes in from above the inlet than below, leading to relatively higher surface velocities on the upper lip and lower surface velocities on the lower lip. These lower velocities on the lower lip result in a higher attainable angle of attack before internal flow separation occurs.


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    Title :

    Aeroacoustic Performance of a Scoop Inlet


    Contributors:

    Publication date :

    1977


    Size :

    14 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English







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