摘要
形状类别函数变换(Class-Shape Transformation,CST)方法是近年来发展起来的一种新型气动外形参数化方法,该方法具有良好的鲁棒性,且涉及参数少、精度高,结果简单直观等特点,被广泛应用于翼型设计研究中。文章结合某小型无人机设计的工程实践,探讨了CST方法在小型无人机翼型设计中的应用,在借鉴他人研究成果的基础上,决定采用Bernstein多项式构建形状函数,分析了Bernstein多项式阶数对CST方法拟合精度的影响。仿真结果表明,当BPO>4时,拟合精度能够达到满意的要求,可用于该型无人机翼型的设计与优化。
Class-shape transformation （CST） is a new airfoil parameterization method developed in recent years. Because of the good robustness and rare parameters involved, high precision, simple structure and so on, it is widely used in airfoil design and research. Based on the engineering practice^of a small UAV, the application of CST method in the design of small UAV airfoil was discussed. And the influence of Bernstein polynomial order on the fitting accuracy of CST method was analyzed. The simulation results showed that the modified CST parametric method of Bernstein polynomial could satis- fy the geometric shape fitting precision of Clark Y airfoil well under the condition of BPO 〉 4, and could be used to design and optimize the UAV＇ s airfoil.
作者
高永
朱飞翔
李冰
于方圆
王玉伟
GAO Yong;ZHU Feixiang;LI Bing;YU Fangyuan;WANG Yuwei(Naval Aviation University, Yantai Shandong 264001, China)
出处
《海军航空工程学院学报》
2017年第5期426-430,共5页
Journal of Naval Aeronautical and Astronautical University
基金
"泰山学者"建设工程专项基金资助项目
关键词
形状类别函数变换
翼型设计
参数化
多项式
class shape transformation
＇ airfoiLdesign
parameterization
polynomial
