Wind Tunnel Tests On 1/20 Scale 6.45v35 Configuration Part I: Longitudinal Characteristics

Gopinath, N and Seshadri, SN and Dutt, HNV and Sampath, Rao B (1991) Wind Tunnel Tests On 1/20 Scale 6.45v35 Configuration Part I: Longitudinal Characteristics. Technical Report. NAL, Bangalore.

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    Abstract

    Tests Were Conducted In The NAL 1 .2m Transonic Wind Tunnel On A 1/20th-Scale Model Of LCA Stage 6 .45V35 Configuration . These Tests Were Carried Out In The Mach Number Range Of 0 .3 To 1 .8 And Over An Angle Of Attack Ranges Of -2 To 24 Deg (Subsonic And Transonic Speeds) And -2 To 12 Deg (Suopersonic Speeds) . The Reynolds Number (Based On Wing Mean Aerodynamic Chord) Varied Between 3 To 7 .4 Million Depending On The Mach Number . The Results Show That This Configuration Gives On Increase In Trimmed Lift To Drag Ratio Of 11 .5% At A Lift Coefficient Of 0 .5 And Mach No. Of 0 .7 When The L.E. Slats Are Deflected From Zero To Full Angle. The L.E. Slats Also Alleviate Pitch-Up For Mach Number Below 0.95. The Addition Of Medium Range Missile Increases Both Drag And Pitching Moment Coefficient.

    Item Type: Proj.Doc/Technical Report (Technical Report)
    Uncontrolled Keywords: WIND TUNNEL TESTING; LCA
    Subjects: AERONAUTICS > Aeronautics (General)
    Division/Department: Aerodynamics , Aerodynamics, Aerodynamics, National Trisonic Aerodynamic Facility
    Depositing User: M/S ICAST NAL
    Date Deposited: 31 Oct 2012 09:52
    Last Modified: 31 Oct 2012 09:52
    URI: http://nal-ir.nal.res.in/id/eprint/11318

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