二维插值法在气动导数计算中的应用  

Application of Bivariate Interpolation in Calculation of Aerodynamic Derivatives

作　　者：赵佶男 ZHAO Jinan(Zhuhai General Aviation R&D and Manufacturing Base,Zhuhai 519040,China)

机构地区：[1]珠海通用航空研发制造基地,广东珠海519040

出　　处：《飞机设计》2020年第3期18-21,25,共5页Aircraft Design

摘　　要：飞行载荷是飞机载荷设计中的关键,在载荷求解过程中快速精确得到气动导数可以提高载荷计算的准确性。在现有气动导数数据基础上,利用薄板样条插值法和克里金插值法,对未知气动导数进行计算。计算结果表明,2种二维插值法的计算精度均远高于传统线性插值,克里金插值法的插值效果更好,为后续气动导数计算提供了新思路。Flight load design is a key phase of the aircraft load design,and the accuracy of load calculation can be improved by obtaining aerodynamic derivatives quickly and accurately in the process of load solution.Based on the existing aerodynamic conductance data,Kriging Interpolation method and Thin Plate Spline method are used to calculate the aerodynamic derivatives.The results show that the accuracy of the two bivariate interpolation methods is much higher than that of linear interpolation.The Kriging Interpolation method has a better interpolation effect,which provides a new idea for the subsequent aerodynamic derivative calculation.

关 键 词：插值法 气动导数 克里金法 薄板样条法 

分 类 号：V211[航空宇航科学与技术—航空宇航推进理论与工程]