CAJ | 학술논문

以变弯度翼型为研究对象,计算了其六种外形的绕流流场,分析了不同的连续光滑变形翼型与传统偏转翼型的气动特性,讨论了变形参数对气动特性的影响,研究了气动特性的产生机理;与此同时,以形状记忆聚合物柔性蒙皮和机械结构实现了可连续光滑偏转后缘的变弯度翼型,并在风洞实验中测试了其气动特性.计算和实验结果表明,可连续光滑偏转后缘的变弯度翼型能改进传统主翼-简单襟翼翼型的气动特性和流场分离特性;可变形段范围、转轴位置、后缘偏转角度、后缘高度等变形参数对气动特性具有显著影响.
이변만도익형위연구대상,계산료기륙충외형적요류류장,분석료불동적련속광활변형익형여전통편전익형적기동특성,토론료변형삼수대기동특성적영향,연구료기동특성적산생궤리;여차동시,이형상기억취합물유성몽피화궤계결구실현료가련속광활편전후연적변만도익형,병재풍동실험중측시료기기동특성.계산화실험결과표명,가련속광활편전후연적변만도익형능개진전통주익-간단금익익형적기동특성화류장분리특성;가변형단범위、전축위치、후연편전각도、후연고도등변형삼수대기동특성구유현저영향.
Choosing variable camber airfoils as the objective, computations on the flow field around six configurations were carried out, the aerodynamic characteristics of different continuous smooth morphing air-foils and conventional deflection airfoil were analyzed, the impact of morphing parameters on aerodynamic characteristics was discussed, and the formation mechanism of the aerodynamic characteristics was studied; meanwhile, variable camber airfoil with continuous smooth morphing trailing edge was realized using shape memory polymer flexible skin and mechanical structures, and its aerodynamic characteristic was tested in wind tunnel experiments. The results from computations and experiments demonstrated that variable camber airfoils with continuous smooth morphing trailing edge had the capability to improve aerodynamic characteris-tic and flow separation characteristic of conventional main wing-plane flap airfoil; and morphing parameters such as the range of flexible section, the position of rotation axis, the deflection angle of trailing edge and the height of trailing edge had essential impact on aerodynamic characteristics.