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Experimental and Analytic Investigation of Ground Effect

机译:地面效应的实验与分析研究

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摘要

A low-speed wind-tunnel investigation was conducted to examine the effect of aspect ratio on ground effect. The characteristics of the wing and its section (a S8036 profile) were established at Re = 1.2 × 10~5. The results indicate that ground effect is highly beneficial in augmenting lift, such that marked increases in the maximum lift-to-drag ratio may be realized. Finite wings in ground effect benefit from a reduction in vortex drag, as well as a lift increase, yielding greater gains in efficiency than achievable for an airfoil. The evaluation of analytic relations for estimation of the finite wing lift-curve slope and drag due to lift showed close accord with experiment.
机译:进行了低速风洞研究,以研究纵横比对地面效应的影响。机翼及其截面的特性(S8036轮廓)确定为Re = 1.2×10〜5。结果表明,地面效应在增加升力方面非常有利,因此可以实现最大升力/阻力比的显着增加。地面效应中的有限机翼得益于涡流阻力的减少以及升力的增加,与机翼相比,效率更高。有限机翼升力曲线斜率和升力阻力的解析关系评估与实验结果吻合良好。

著录项

  • 来源
    《Journal of Aircraft》 |2015年第1期|235-243|共9页
  • 作者

    Lance W. Traub;

  • 作者单位

    Embry-Riddle Aeronautical University, Prescott, Arizona 86301;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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