基于Isight的倾转旋翼飞行器前飞状态翼型优化  

Airfoil Optimization of Tiltrotor Aircraft Forward Flight Mode Based on Isight

作　　者：赵广 何国毅 王琦 罗云 王振 Zhao Guang;He Guoyi;Wang Qi;Luo Yun;Wang Zhen(School of Aircraft Engineering,Nanchang Hangkong University,Nanchang 330063,China)

机构地区：[1]南昌航空大学飞行器工程学院

出　　处：《航空工程进展》2019年第4期514-520,535,共8页Advances in Aeronautical Science and Engineering

基　　金：国家自然科学基金(11462015,11862017);江西省科技厅重点研发计划项目(20151BBE50026)

摘　　要：倾转旋翼飞行器被认为是下一代旋翼类飞行器的主要发展方向,研究其机翼的气动优化设计,对于提高该类飞行器的飞行性能具有重要意义。以NACA2412为原始翼型,首先,采用Hicks-Henne方法进行翼型参数化,并确定设计变量;其次,采用Isight集成翼型生成、网格划分、流场求解等软件,建立翼型自动优化平台;然后,采用基于最优拉丁超立方设计(Opt LHD)和径向基函数(RBF)的代理模型,并用多岛遗传算法(MIGA)进行机翼优化;最后,将优化后的翼型生成三维机翼,进行气动特性计算。优化过程中,对比两种边界条件的优化结果,以证明所用优化方法的有效性;为了减少计算量,使用动量源方法用作用盘代替旋翼。结果表明:根据机翼展向来流速度分布进行翼型优化,在前飞状态下优化后的机翼的升阻比提高了66.03%。As one of the main development trends of the next generation rotor-crafts,it is of important significance to study the aerodynamic optimization design of its wings for improving the flight performance of tiltrotor aircraft.NACA2412 is employed as the benchmark airfoil.Firstly,the airfoil parameterization is carried out by Hicks-Henne method and the design variables is determined;Secondly,the softwares of Isight,mesh generation and flow field solver are used to build airfoil automatic optimization platform;Then,a surrogate model based on optimal Latin hypercube design(Opt LHD)and radial basis function(RBF)is adopted,and multi-island genetic algorithm(MIGA)is used to optimize the airfoil;Finally,the optimized airfoil is used to generate wing and the aerodynamic characteristics are calculated.In the optimization process,the optimization results of the two boundary conditions are compared to prove the effectiveness of the optimization method;the rotor is replaced by actuator disk by way of momentum source method to reduce the computational complexity.The results show that the lift-drag ratio of the optimized wing increases by 66.03%in the forward flight state when the airfoil is optimized according to the inflow velocity distribution along the wing span.

关 键 词：倾转旋翼飞行器 翼型优化 ISIGHT 代理模型 动量源方法 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]