基于CST参数化方法的巡飞弹翼型优化设计  

Optimization design of loitering munition airfoils based on the CST parameterization method

作　　者：傅砚 姚文进[1] 薛尚捷 武天阳 FU Yan;YAO Wenjin;XUE Shangjie;WU Tianyang(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学机械工程学院,南京210094

出　　处：《兵器装备工程学报》2023年第6期133-139,共7页Journal of Ordnance Equipment Engineering

摘　　要：针对巡飞弹在低雷诺数下与传统飞机不同的翼型需求,对低雷诺数翼型E387进行了优化研究。基于CST参数化方法,分析了不同Bernstein多项式阶数下E387翼型匹配程度,采用序列二次规划算法作为优化方法,以提高升阻比为优化目标进行优化。结果表明:在特定飞行条件下,优化后的翼型升力系数提升了11.127%,升阻比提高了4.173%;采用优化翼型的巡飞弹升力系数提升了9.531%,升阻比提升了6.326%;改善了低雷诺环境下机翼上下压力分布,整体提升了巡飞弹的气动性能。为低雷诺数巡飞弹翼型提供理论依据和设计参考。This paper optimizes an airfoil E387 with a small Reynolds number to meet the airfoil requirements of a loitering munition with a small Reynolds number,which are quite different from those of a traditional aircraft.Based on the CST parameterization method,this paper analyzes the matching degree of E387 airfoils under different Bernstein polynomial orders.The sequential quadratic programming is used as the optimization method to achieve the optimization goal by improving the lift-to-drag ratio.The results show that,under specific flight conditions,the airfoil lift coefficient after optimization design increases by 11.127%and lift-to-drag ratio increases by 4.173%.The lift coefficient of the loitering munition with the optimized airfoils increases by 9.531%,and the lift-to-drag ratio increases by 6.326%,which improves the upper and lower pressure distribution of the wing in a low Reynolds environment,and improves the aerodynamic performance of the loitering munition as a whole.It provides theoretical basis and design reference for loitering munition airfoils with a small Reynolds number.

关 键 词：巡飞弹 低雷诺数 翼型优化 CST参数化方法 序列二次规划算法 

分 类 号：TJ413.9[兵器科学与技术—火炮、自动武器与弹药工程]