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Abstract <p>The aerodynamic characteristics of amphibious aircraft in real wind and wave conditions are studied. An experimental investigation of jet lift control on airfoil in near-wave water is conducted. The novel wind-water tunnel testing methods are proposed. The study focuses on the aerodynamic performance of the basic airfoil, the lift enhancement performance of the jet, and ground/water surface effects. The results show that flap jet flow significantly increases the lift coefficient of the airfoil. When <i>C</i><sub>μ</sub> = 0.024, the lift increase is equal to approximately 48.3%. As compared to steady jet flow, unsteady pulsed jet flow has the greater lift enhancement potential, with a lift increase of about 32.5% at <i>C</i><sub>μ</sub> = 0.015. The dimensionless wave height <i>A1</i> in the range from 0.653 to 0.928 results in a smoother stall characteristic compared to <i>A1</i> = 0.307. The higher wave motion adversely affects the lift enhancement of the airfoil under jet control.</p>

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Experimental Study on the Enhancement of Blowing Lift of a Near-Wave Water Wing

  • 期刊论文

  • 发表日期：

    2025年9月29日

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  • J. X. Pan,
  • W. B. Wang,
  • Y. Wang,
  • X. Zhang,
  • P. Shen,
  • F. Tong

摘要

Abstract

The aerodynamic characteristics of amphibious aircraft in real wind and wave conditions are studied. An experimental investigation of jet lift control on airfoil in near-wave water is conducted. The novel wind-water tunnel testing methods are proposed. The study focuses on the aerodynamic performance of the basic airfoil, the lift enhancement performance of the jet, and ground/water surface effects. The results show that flap jet flow significantly increases the lift coefficient of the airfoil. When Cμ = 0.024, the lift increase is equal to approximately 48.3%. As compared to steady jet flow, unsteady pulsed jet flow has the greater lift enhancement potential, with a lift increase of about 32.5% at Cμ = 0.015. The dimensionless wave height A1 in the range from 0.653 to 0.928 results in a smoother stall characteristic compared to A1 = 0.307. The higher wave motion adversely affects the lift enhancement of the airfoil under jet control.