Investigation of passive devices for axisymmetric base13; drag reduction at transonic speeds

Viswanath, PR (1985) Investigation of passive devices for axisymmetric base13; drag reduction at transonic speeds. Technical Report. National Aeronautical Laboratory, Bangalore, India.

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    Abstract

    Experiments have been made to assess the effectiveness of13; several base modifications for reducing base drag and total13; afterbody drag at transonic speeds. The modifications tested include base cavities, ventilated cavities and two vortex suppression devices. Results show that, while appreciable base drag reductions are possible with many of the devices examined, the net total drag reductions are lower, presumably because of the additional losses associated with the devices.

    Item Type: Proj.Doc/Technical Report (Technical Report)
    Uncontrolled Keywords: Base drag;Passive devices;Drag reduction
    Subjects: AERONAUTICS > Aerodynamics
    Division/Department: Aerodynamics
    Depositing User: M/S ICAST NAL
    Date Deposited: 29 Aug 2006
    Last Modified: 24 May 2010 09:49
    URI: http://nal-ir.nal.res.in/id/eprint/2596

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