考虑旋翼干扰下武装直升机航炮射击精度研究  

Research on the Shooting Accuracy of Attack Helicopter Guns Considering Rotor Interference

作　　者：关昊天 李欣欣[1] 覃泽龙 袁夏明 GUAN Haotian;LI Xinxin;QIN Zelong;YUAN Xiaming(College of Mechanical Engineering,Guangxi University,Nanning 530004,Guangxi,China;Department of Precision Instrument,Tsinghua University,Beijing 100084,China)

机构地区：[1]广西大学机械工程系,广西南宁530004 [2]清华大学精密仪器系,北京100084

出　　处：《火炮发射与控制学报》2023年第5期7-13,共7页Journal of Gun Launch & Control

基　　金：国防科技基础加强计划(173计划)项目(2019-JCJQ-ZD-135);广西制造系统与先进制造技术重点实验室项目(17-259-05S005)。

摘　　要：为了保证直升机在打击地面目标时的射击精度,需要对射击偏差的误差影响进行分析。通过研究直升机在悬停飞行时旋翼下方的诱导速度分布,分析旋翼干扰造成的机体晃动对航炮命中影响,建立机体在飞行打击目标时受到旋翼干扰下的外弹道射击方程;使用蒙特卡洛法进行打靶射击仿真实验,得到旋翼干扰下的弹丸落点分布规律。实验表明,某型武装直升机在悬停过程中打击中远距离目标时旋翼诱导速度影响弹丸落点的系统误差,机体晃动影响弹丸落点的散布误差,其圆概率误差随航炮射击俯仰角的增大呈现单边下降的趋势。通过实验可为直升机航炮火控系统的改进和实现旋翼干扰补偿提供支撑。In order to ensure the shooting accuracy of helicopters when hitting the ground target,it is necessary to analyze the error sources that lead to shooting deviation.By studying the induced velocity distribution under the rotor when a helicopter is hovering,the influence of fuselage shaking caused by rotor interference on the accuracy of the cannon.The Monte Carlo method was used to simulate target shooting.And the distribution law of projectile impact points under the interference of the rotor is stu-died.Experiments show that the rotor-induced speed of a hovering attack helicopter affects the systema- tic error of projectile impact points when it is shooting at medium and long-range targets.Fuselage vibration affects the dispersion error of projectile impact points.As the gun increases its pitch angle,the circular probability error is unilaterally going down.The experiments can provide support for the improvement of the helicopter gun fire control system and the realization of rotor interference compensation.

关 键 词：直升机 旋翼 弹道 射击误差 系统仿真 

分 类 号：TJ392[兵器科学与技术—火炮、自动武器与弹药工程]