涡环伞降末敏子弹的稳态扫描动力学特性
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摘要
综合采取理论建模、高空自由落体试验及可视化仿真相结合的方法,研究了一种涡环伞降末敏子弹的稳态扫描动力学特性。基于第一类拉格朗日方程,建立了由弹体、降落伞、伞盘、摩擦盘、连杆所组成的五刚体动力学模型,并应用ADAMS、MATALB及VR相结合的方法进行了弹道计算和可视化仿真研究。通过在高空热气球上投放试验样弹的方法,得到了伞弹系统的运动图像、平均落速、转速等弹道数据。对比研究得出:涡环伞的运动稳定性良好,可使末敏子弹保持匀速旋转降落状态,弹体达到稳定后的落速约为13.5m/s,转速约为3r/s,稳态扫描角接近于弹体的静态悬挂角,仿真计算与试验结果的一致性较好。
The theoretical modeling,free-falling body and visual simulation methods were adopted to research the dynamic characteristics of the terminal-sensitive submunition with a vortex-ring parachute at steady-state scanning stage.According to the first Lagrange equation,the five-body dynamical model including the body,parachute,umbrella tray,friction disc and connecting rod was established.The ballistics calculation and visualization were implemented by combining ADAMS,MATALB and VR methods.The moving images,falling velocity and rotational speed were obtained by launching the test submunitions on a hot air balloon.A comparative study concluded that the vortex-ring parachute had the advantage of motion stability and could keep the terminal-sensitive submumition spinning at a constant speed in the process of free falling.The falling velocity in stability was 13.5 m/s,and the rotational speed was about 3 r/s.The steady-state scanning angle was close to the static hanging angle of the body.The simulation results were in good agreement with the flight test.
The theoretical modeling,free-falling body and visual simulation methods were adopted to research the dynamic characteristics of the terminal-sensitive submunition with a vortex-ring parachute at steady-state scanning stage.According to the first Lagrange equation,the five-body dynamical model including the body,parachute,umbrella tray,friction disc and connecting rod was established.The ballistics calculation and visualization were implemented by combining ADAMS,MATALB and VR methods.The moving images,falling velocity and rotational speed were obtained by launching the test submunitions on a hot air balloon.A comparative study concluded that the vortex-ring parachute had the advantage of motion stability and could keep the terminal-sensitive submumition spinning at a constant speed in the process of free falling.The falling velocity in stability was 13.5 m/s,and the rotational speed was about 3 r/s.The steady-state scanning angle was close to the static hanging angle of the body.The simulation results were in good agreement with the flight test.
引文
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[17]邱荷.末敏弹全弹道运动仿真及虚拟现实技术研究[D].南京:南京理工大学,2013.QIU He.Study on motion simulation and VR technology of terminal sensitive projectile on the whole trajectory[D].Nanjing:Nanjing University of Science and Technology,2013.(in Chinese)
[18]张俊,曹俊,陈敏.基于Adams的伞弹系统降落过程动力学仿真[J].电子机械工程,2015,31(1):57-60.ZHANG Jun,CAO Jun,CHEN Min.Dynamics simulation of bomb-parachute system during falling process based on Adams[J].Electro-Mechanical Engineering,2015,31(1):57-60.(in Chinese)
[2]KARL F D,HARTMUT S.9DOF simulation of rotating parachute systems[J].Journal of Aircraft,1992,29(5):774-781.
[3]JOHARI H.Aerodynamics of parachute opening[R].Worcester,US:Mechanical Engineering Department,Worcester Polytechnic Institute,2002.
[4]ACCORSI M,LEONARD J,BENNEY R.Structural modeling of parachute dynamics[J].AIAA Journal,2012,38(1):139-146.
[5]STEIN K,BENNEY,R,KALRO V,et al.Parachute fluidstructure interactions:3D computation[J].Computer Methods in Applied Mechanics and Engineering,2000,190(3/4):373-386.
[6]TEZDUYAR T E.Finite element methods for flow problems with moving boundaries and interfaces[J].Archives of Computational Methods in Engineering,2001,8(2):83-130.
[7]MASAYA M,TAKUYA I,ATSUSHI H,et al.Computational analysis of parachute motions using the immersed boundary method[R].AIAA-2008-311,2008.
[8]师娇,唐胜景,高峰,等.基于离散时间传递矩阵法的伞弹系统动力学模型[J].宇航学报,2012,33(1):13-18.SHI Jiao,TANG Shengjing,GAO Feng,et al.Dynamics model for parachute-submissile system based on discrete time transfer matrix method[J].Journal of Astronautics,2012,33(1):13-18.(in Chinese)
[9]NICOLAS A,BENJAMIN T.Euler-Lagrange coupling for porous parachute canopy analysis[J].The International Journal of Multiphysics,2007,1(1):53-68.
[10]NEUHAUS J R,KENNEY P S.A generic multibody parachute simulation model[R].AIAA-2006-6622,2006.
[11]舒敬荣,王宝贵,韩子鹏,等.伞-弹系统三体运动分析[J].航空学报,2001,22(6):481-485.SHU Jingrong,WANG Baogui,HAN Zipeng,et al.Analysis on three body motion of parachute-projectile systems[J].Acta Aeronautica et Astronautica Sinica,2001,22(6):481-485.(in Chinese)
[12]朱勇,刘莉.基于拉格朗日力学的伞-弹系统动力学模型[J].航空学报,2009,30(7):1208-1213.ZHU Yong,LIU Li.Dynamic model of parachute-projectile systems based on Lagrange mechanics[J].Acta Aeronautica et Astronautica Sinica,2009,30(7):1208-1213.(in Chinese)
[13]马晓东.伞降末敏子弹动力学特性研究[D].南京:南京理工大学,2016.MA Xiaodong.The study on dynamic characteristics of terminal sensitive submunition with parachute[D].Nanjing:Nanjing University of Science and Technology,2016.(in Chinese)
[14]杨永亮,刘荣忠,郭锐,等.旋转自稳定末敏子弹运动特性分析[J].国防科技大学学报,2018,40(1):145-150.YANG Yongliang,LIU Rongzhong,GUO Rui,et al.Motion characteristic analysis of rotary self-stabilizing terminal sensitive submunition[J].Journal of National University of Defense Technology,2018,40(1):145-150.(in Chinese)
[15]刘巍,唐乾刚,寇保华,等.降落伞-旋转弹系统落速及转速数值模拟[J].兵工学报,2007,28(11):1302-1305.LIU Wei,TANG Qiangang,KOU Baohua,et al.Numerical simulation of velocity and spin speed of parachute-spinning projectile system[J].Acta Armamentarii,2007,28(11):1302-1305.(in Chinese)
[16]张俊,刘荣忠,郭锐,等.末敏弹稳态扫描段红外特性的实验研究[J].红外与激光工程,2013,42(11):2876-2881.ZHANG Jun,LIU Rongzhong,GUO Rui,et al.Experimental study on infrared characteristics of terminal-sensitive projectile at steady-state scanning stage[J].Infrared and Laser Engineering,2013,42(11):2876-2881.(in Chinese)
[17]邱荷.末敏弹全弹道运动仿真及虚拟现实技术研究[D].南京:南京理工大学,2013.QIU He.Study on motion simulation and VR technology of terminal sensitive projectile on the whole trajectory[D].Nanjing:Nanjing University of Science and Technology,2013.(in Chinese)
[18]张俊,曹俊,陈敏.基于Adams的伞弹系统降落过程动力学仿真[J].电子机械工程,2015,31(1):57-60.ZHANG Jun,CAO Jun,CHEN Min.Dynamics simulation of bomb-parachute system during falling process based on Adams[J].Electro-Mechanical Engineering,2015,31(1):57-60.(in Chinese)