飞虫粘附翼型对翼型气动特性影响的实验研究

在西北工业大学NF-3低速风洞进行了飞虫粘附翼型对翼型气动性能影响的风洞实验研究。结果表明：模型表面粘附的飞虫数量累计到一定程度时,将会导致翼型表面50%区域以上的面积发生分离,引起翼型失速,并且实验前模型表面的飞虫数量会改变翼型的失速迎角,因此实验前必须将模型擦拭干净。鉴于飞虫粘着数量的不确定性,对于翼型在复杂环境下使用时其气动性能的变化需要加以关注。

Experimental study of the effect of insects sticking to airfoil on aerodynamic characteristics

The effects of insects sticking to airfoil on aerodynamic characteristics were studied with NF-3 wind tunnel in Northwestern Polytechnical University. The results showed that the certain amount of insects adhering to airfoil would lead to the flow separation area of more than 50% and stall,the number of insects on the model surface before the experiment would change the airfoil stall angle of attack, so the model must be wiped clean. Due to the uncertainty of the amount of stuck insects under nature environment, the variations of aerodynamic performance of airfoil should be paid special attention.