微型飞机机翼平面形状选择方法研究  

Study on the Selection of Micro Air Vehicle's Wing Shapes

作　　者：李占科[1] 宋笔锋[1] 苏润娥[1] 裴扬[1] 

机构地区：[1]西北工业大学航空学院,陕西西安710072

出　　处：《飞行力学》2005年第3期13-15,共3页Flight Dynamics

基　　金：总装气动预研项目(413130401)及国防基础科研项目(J1500C001)联合资助

摘　　要：提出了一种在微型飞机初始设计阶段进行机翼平面形状选择的方法。该方法利用涡格法计算特定机翼平面形状的升阻特性,再结合多项式拟合和插值运算,利用等高线云图进行直观的对比显示进行机翼平面形状的选择。通过在微型飞机原理样机研制中的应用,验证了该方法的实用性和有效性。Due to the lack ot a thorough understanding of the aerodynamics mechanism of micro air vehicle（MAV） flying at a low Reynold number range, which wing shape is best to MAV has not come to a conclusion. Trial and error often leads to lengthy and costly design processes, also to computational fluid dynamics（CFD）. It is unworthy and unnecessary to do so at the preliminary stage of the aircraft design. In this paper a relatively simple method on selecting of MAV＇ wing shapes is given. The approach of the method are; （1） calculate the lift coefficient C,. and drag coefficient CD versus angle of attack using vortex lattice software such as Tornado which spends little computer calculation time; （2） fit the discrete data gotten from （1） in second-degree polynomial, and get the fitting quadratic equation of CL and CD; （3）calculate a weight given MAV＇s required lift coefficient Creq using the maximum dimension Lmax, such as rectangular diagonal, and aspect ratio λ, and use （2） to establish the relationship between the Lmax and the required angle of attack; （4） draw contour plot. The method has been successfully used in the development of our MAV and flight test has also been validated its practicability and validity.

关 键 词：微型飞机 涡格法 平面形状 多项式拟合 

分 类 号：V279.2[航空宇航科学与技术—飞行器设计]