Two dimentional transonic blockage interference studies in the NAL 1-Ft. blowdown wind tunnel

Ramaswamy, MA and Sharma, Ramachandra and Krishnamuthy, K (1974) Two dimentional transonic blockage interference studies in the NAL 1-Ft. blowdown wind tunnel. Technical Report. National Aeronautical Laboratory, Bangalore, India.

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    Abstract

    Two 12% thick circular-arc aerof oils of 3 in. and 6 in. chord length were tested at zero angle of attack to determine the slot open-area ratio for minimum two-dimensional blockage interference at transonic speeds in the HAL 1-ft. blowdown wind turmel. By blocking the slots in alternative arrangements,slot open-area ratio of 8%, 4% and 1.33% were obtained. Of these, the 8% open area was found to give the least zero-lift blockage interference.

    Item Type: Proj.Doc/Technical Report (Technical Report)
    Uncontrolled Keywords: Aerofoils;Slot open area ratio
    Subjects: AERONAUTICS > Aerodynamics
    Division/Department: Aerodynamics, Aerodynamics, Aerodynamics
    Depositing User: M/S ICAST NAL
    Date Deposited: 28 Aug 2006
    Last Modified: 24 May 2010 09:49
    URI: http://nal-ir.nal.res.in/id/eprint/2579

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