If operational requirements for turbojet-powered aircraft require inlet to operate off-design at reduced inlet mass-flows, theoretical additive drag can be significant in magnitude, compared to basic aircraft drag; this could be equivalent to large penalties in range; proper cowl design will allow much of potential drag increment to be cancelled by a cowl suction force; for subsonic inlets at subsonic Mach numbers, test results show that about 80% of theoretical additive drag can be recovered with reasonably short and thin cowl; for same subsonic inlets at low supersonic Mach numbers, about 50% to 60% can be recovered; other findings.


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    Title :

    Additive drag on inlet cowls and its effect on aircraft performance


    Additional title:

    AGARDograph


    Contributors:
    Mount, J.S. (author)

    Conference:

    1965 Inlets



    Publication date :

    1965


    Size :

    30 pages


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English






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