大后掠机翼外侧翼下导弹气动特性分析  

Analysis of a Aerodynamic Characteristics of Missiles Under the OuterWing of Large SweptWings

作　　者：徐家宽[1] 宋敏亮 刘艳辉 张治生 黄思源 王玉轩 XU Jiakuan;SONG Minliang;LIU Yanhui;ZHANG Zhisheng;HUANG Siyuan;WANG Yuxuan(School of Aeronautics,Northwestern Polytechnical University,Xi'an Shannxi 710072,China;Aviation Equipment Research Institute,Qing'an Group Co.,Ltd.,Xi'an Shannxi 710077,China;Xi’an Institute of Modern Control Technology,Xi'an Shannxi 710065,China)

机构地区：[1]西北工业大学航空学院,陕西西安710072 [2]庆安集团有限公司航空设备研究所,陕西西安710077 [3]西安现代控制技术研究所,陕西西安710065

出　　处：《海军航空大学学报》2023年第5期405-412,426,共9页Journal of Naval Aviation University

基　　金：中央高校基本科研业务费(G2021KY05101)。

摘　　要：位于大后掠翼战斗机机翼下的导弹,在飞行中受到的气动载荷,会对结构疲劳特性产生显著影响。为了研究导弹的气动载荷,建立了某型战斗机挂载导弹的气动仿真模型,设计了3种导弹构型,分别为带前后弹翼导弹、只带后弹翼的导弹与只有弹体不带弹翼的导弹。对飞机翼下挂载3种不同构型的导弹进行了气动特性的数值模拟与分析,并对比了导弹的气动载荷分布规律。计算结果表明:位于大后掠机翼下方的导弹,由于机翼下方的洗流作用,会受到较大的气动载荷,导弹的气动载荷以侧力和滚转及偏转力矩为主要分量;滚转力矩的方向会导致导弹与发射装置连接处靠近飞机对称面一侧受力较大,容易降低疲劳寿命;导弹的气动载荷主要由后弹翼产生,可在设计弹翼时适当减小后弹翼的面积,从而降低战斗机后掠翼洗流对翼下挂载导弹气动特性的影响。The aerodynamic load on missiles mounted under large swept wings can have a significant impact on structural fatigue characteristics.To study the aerodynamic load on missiles,an aerodynamic model of a fighter mounted missile is established.Three missile configurations are designed,namely,missiles with front and rear wings,missiles with only rear wings,and missiles with only body but no wings.Numerical simulation and analysis of aerodynamic characteristics are conducted on three different configurations of missiles mounted under the wing of the aircraft,and the distribution of aerodynamic loads on the missiles are compared.The results indicate that the missile mounted under the wing will be subjected to significant aerodynamic loads due to the washing effect.The aerodynamic load on the missile is mainly composed of lateral force,rolling and yaw moment.The direction of rolling moment will cause a greater force on the side near the plane of symmetry at the connection between the missile and the launch device,which will reduce the fatigue life.The aerodynamic load on the missile is mainly generated by the rear wing.The area of the rear wing can be appropriately reduced to reduce the influence of the wash flow of the fighter's swept wing on the aerodynamic characteristics of the missile mounted under the wing when designing the wing.

关 键 词：大后掠翼 机翼洗流 气动载荷 数值模拟 

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]