Internal flow separation at large incidence angles is studied on the basis of wind-tunnel pressure data for six axisymmetric inlet geometries. The inlet geometric variables investigated are the angle of incidence, the throat Mach number, the internal lip contraction ratio, 'sharpness' of the external shape, and freestream velocity. It is shown that an increase in lip contraction ratio delays internal flow separation, while an increase in the sharpness of the external profile tends to reduce the angle of incidence at which complete flow separation occurs. It is also shown that inlet flow separation is subject to scale effects associated with the boundary layer on the cowl surface. The scale effects are particularly pronounced at very high throat Mach numbers.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Internal cowl-separation at high incidence angles


    Contributors:

    Conference:

    American Institute of Aeronautics and Astronautics, Aerospace Sciences Meeting ; 1975 ; Pasadena, CA


    Publication date :

    1975-01-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English


    Keywords :


    Internal cowl-separation at high incidence angles

    JAKUBOWSKI, A. / LUIDENS, R. | AIAA | 1975


    COWL

    TATSUSE HIDEAKI | European Patent Office | 2017

    Free access

    COWL CROSSBAR

    CHOI IK KEUN | European Patent Office | 2022

    Free access

    COWL CROSSBAR

    CHOI IK KEUN | European Patent Office | 2022

    Free access

    COWL CROSSBAR

    CHOI IK KEUN | European Patent Office | 2022

    Free access