自推进红外干扰弹气动特性影响规律研究  

Study on the influence law of aerodynamic characteristics of thrusted infrared flares

作　　者：罗健 马贤杰 陈伟星 李石川 陈宁[2] Luo Jian;Ma Xianjie;Chen Weixing;Li Shichuan;Chen Ning(AVIC Shenyang Aircraft Corporation,Shenyang 110000,Liaoning,China;No.8511 Research Institute of CASIC,Nanjing 210007,Jiangsu,China)

机构地区：[1]航空工业沈阳飞机设计研究所,辽宁沈阳110000 [2]中国航天科工集团8511研究所,江苏南京210007

出　　处：《航天电子对抗》2022年第6期21-24,共4页Aerospace Electronic Warfare

摘　　要：自推进红外干扰弹发射后可伴随飞机飞行,能够有效对抗具有运动轨迹识别能力的红外制导导弹,是红外干扰弹的重要发展方向之一。为研究其弹头、尾翼结构对其气动特性的影响规律,以雷诺时均Navier⁃Stokes方程为基础,数值模拟得到不同条件下干扰弹的重要气动参数。计算结果表明,钝化弹头可以减小气动阻力,提高弹体飞行稳定性,但效果有限;尾翼弦长越长,干扰弹阻力系数、升力系数和俯仰力矩系数越大,有利于提升干扰弹飞行稳定性;尾翼展开角度越大,升力系数、俯仰力矩系数就越大,考虑到扭簧展开角度受限等因素,建议尾翼展开角度在90°~145°之间选取。Thrusted infrared flares can fly with the aircraft after launching,and can effectively counter the in⁃frared guided missile with the function of motion trajectory recognition.It is one of the important development di⁃rections of the infrared flares.In order to study the influence of warhead and tail structure on aerodynamic character⁃istics,based on Reynolds time averaged Navier-Stokes equation,the aerodynamic parameters of the jammer under different conditions is obtained by numerical simulation.The calculation results show that the passivation warhead can reduce aerodynamic drag and improve flight stability,but the effect is limited.The longer the tail chord length,the greater the drag coefficient,lift coefficient and pitching moment coefficient of the flare.The larger the deploy⁃ment angle of the tail,the larger the lift coefficient.Considering the limited deployment angle of the torsion spring and other factors,it is recommended that the deployment angle of the tail be selected between 90°and 145°.

关 键 词：自推进红外干扰弹 飞行稳定性 气动特性 

分 类 号：TN972[电子电信—信号与信息处理]