Study on the Transonic Flows around a Thin wing an Aileron

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The experimental airplanes of Supersonic Transportation, SST, are being developed in Japan. The wings are thin to augment cruise aerodynamic performance. If these wings are equipped with ailerons, the shock wave motions on the ailerons might cause aileron buzz not accompanied by heavy separation of the boundary layers. On the other hand, unsteady aerodynamics research regarding thin wings has not been extensive. In order to precisely investigate the shock wave motions on thin wings, two-dimensional CFD simulations were conducted in our study. In the simulations, Navier-Stokes equations are solved around the NACA0003 airfoil with an oscillating aileron. The results show that the imaginary component of the unsteady aileron hinge moment, abbreviated "AHMI," has the maximum and positive value when the shock wave oscillates around the mid-chord on the aileron. The aileron length does not strongly affect the shock wave motions on the aileron if the scale of the shock wave motions is normalized with the aileron length. But a longer aileron shows larger AHMI than a shorter one. The experimental results on SST arrow wing are compared with simulated results, too. In order to compare the results acquired from the models having different space dimensions, the local Mach number component normal to the aileron hinge line is calculated as a common parameter. The comparison shows that, for both results, AHMI becomes positive when the shock wave oscillates around the aileron mid-chord. In addition, as the shock wave oscillates more rearward on the aileron, AHMI increases.

収録刊行物

  • Transactions of the Japan Society for Aeronautical and Space Sciences

    Transactions of the Japan Society for Aeronautical and Space Sciences 46(153), 186-194, 2003-11-04

    THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

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各種コード

  • NII論文ID(NAID)
    10012540000
  • NII書誌ID(NCID)
    AA0086707X
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    05493811
  • NDL 記事登録ID
    6748608
  • NDL 雑誌分類
    ZN25(科学技術--運輸工学--航空機・ロケット)
  • NDL 請求記号
    Z53-M236
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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