椭圆翼型低速气动特性研究

为对椭圆翼型的低速气动特性进行研究,通过不同相对厚度椭圆翼型气动特性的数值计算和分析比较,选取16%相对厚度椭圆翼型作为试验翼型,在西北工业大学NF-3风洞二元试验段内对此翼型的低速气动特性进行了试验研究,试验采用表面测压和尾排型阻测量技术.试验结果与数值计算结果的对比表明,在较高速度和雷诺数下试验值与计算值吻合得较好,但在小速度和低雷诺数下试验值与计算值则相差较大,在升阻和力矩特性方面,椭圆翼型呈现出不同于传统翼型的气动特性.

Investigation on Aerodynamics Performance of Elliptic Airfoil at Low Speed

By calculating and comparing the aerodynamic performance of elliptic airfoils with different thickness-chord ratio using numerical calculation method,the 16% thickness elliptic airfoil is selected to be the experimental airfoil,and the experimental investigation on this airfoil is performed in two-dimensional testing section of NF-3 wind tunnel at Northwestern Polytechnical University.The techniques of measuring the surface pressure and drag measurement with trail total pressure row tube are used.The compar...