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战斗机武器外挂投放与内埋投放比较

张群峰 闫盼盼 黎军

张群峰, 闫盼盼, 黎军等 . 战斗机武器外挂投放与内埋投放比较[J]. 北京航空航天大学学报, 2017, 43(6): 1085-1097. doi: 10.13700/j.bh.1001-5965.2016.0497
引用本文: 张群峰, 闫盼盼, 黎军等 . 战斗机武器外挂投放与内埋投放比较[J]. 北京航空航天大学学报, 2017, 43(6): 1085-1097. doi: 10.13700/j.bh.1001-5965.2016.0497
ZHANG Qunfeng, YAN Panpan, LI Junet al. Comparison between external store separation and buried store separation of fighter[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(6): 1085-1097. doi: 10.13700/j.bh.1001-5965.2016.0497(in Chinese)
Citation: ZHANG Qunfeng, YAN Panpan, LI Junet al. Comparison between external store separation and buried store separation of fighter[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(6): 1085-1097. doi: 10.13700/j.bh.1001-5965.2016.0497(in Chinese)

战斗机武器外挂投放与内埋投放比较

doi: 10.13700/j.bh.1001-5965.2016.0497
基金项目: 

国家自然科学基金 11172283

详细信息
    作者简介:

    张群峰, 男, 博士, 讲师。主要研究方向:应用计算流体力学

    闫盼盼, 男, 博士研究生。主要研究方向:应用计算流体力学

    黎军, 男, 博士, 研究员。主要研究方向:飞行器设计

    通讯作者:

    张群峰, E-mail:zhangqunfeng@263.net

  • 中图分类号: V211.3

Comparison between external store separation and buried store separation of fighter

Funds: 

National Natural Science Foundation of China 11172283

More Information
  • 摘要:

    为了研究弹体外挂投放与内埋投放的区别,利用基于Menter SST湍流模式的改进延迟分离涡模拟(IDDES)方法以及重叠网格技术,分别对亚声速和超声速来流条件下,同一弹体外挂投放和内埋投放进行了数值模拟,得到了亚声速和超声速条件下外挂投放与内埋投放弹体的下落规律。通过对比分析表明:亚声速和超声速来流条件下,内埋投放由于受舱体内强非定常流场以及舱体唇口剪切层的影响,弹体受很大的抬头力矩,弹体姿态角变化较大,投放特性劣于外挂投放。进一步研究表明:在弹射时给弹体一定的低头角速度,使弹体以低头姿态穿越剪切层,则可以大幅度降低剪切层带来的不利影响,提高内埋投放弹体分离品质。

     

  • 图 1  贡献单元选取示意图

    Figure 1.  Schematic of donor cell selection

    图 2  弹体中心截面网格分布

    Figure 2.  Grid distribution on central plane of missile

    图 3  亚声速来流条件下弹体中心截面马赫数分布云图

    Figure 3.  Contours of Mach number distribution on central plane of missile for subsonic inflow

    图 4  超声速来流条件下弹体中心截面马赫数分布云图

    Figure 4.  Contours of Mach number distribution on central plane of missile for supersonic inflow

    图 5  亚声速来流条件下弹体竖直方向合力、速度和位移随时间变化曲线

    Figure 5.  Vertical force, velocity and displacement of missile versus time for subsonic inflow

    图 6  亚声速来流条件下弹体俯仰力矩、俯仰角速度和俯仰角随时间变化曲线

    Figure 6.  Pitch moments, pitch angular velocity and pitch angle of missile versus time for subsonic inflow

    图 7  亚声速来流条件下t=0.1 s外挂投放流场中心截面马赫数及弹体表面压力分布云图

    Figure 7.  Contours of Mach number distribution on flow field central plane and pressure distribution on missile surface for external store separation of subsonic inflow at t=0.1 s

    图 8  亚声速来流条件下t=0.1 s外挂投放弹体表面不同周向位置处压力系数分布

    Figure 8.  Pressure coefficient distribution at different circumferential positions on missile surface for external store seperation of subsonic infolw at t=0.1 s

    图 9  超声速来流条件下弹体竖直方向合力、速度和位移随时间变化曲线

    Figure 9.  Vertical force, velocity and displacement of missile versus time for supersonic inflow

    图 10  超声速来流条件下弹体俯仰力矩、俯仰角速度和俯仰角随时间变化曲线

    Figure 10.  Pitch moments, pitch angular velocity and pitch angle of missile versus time for supersonic inflow

    图 11  超声速来流条件下t=0.1 s外挂投放流场密度梯度等值面

    Figure 11.  Iso-surfaces of density gradient of external store separation for supersonic inflow at t=0.1 s

    图 12  超声速来流条件下t=0.1 s外挂投放弹体表面压力分布云图及不同周向位置处压力系数分布

    Figure 12.  Pressure distribution contours on missile surface and pressure coefficient distribution at different circumferential positions for extemal store seperation of supersonic inflow at t=0.1 s

    图 13  超声速来流条件下t=0.25 s外挂投放流场密度梯度等值面

    Figure 13.  Iso-surfaces of density gradient of external store separation for supersonic inflow at t=0.25 s

    图 14  超声速来流条件下t=0.25 s外挂投放弹体表面压力分布云图及不同周向位置处压力系数分布

    Figure 14.  Pressure distribution contours on missile surface and pressure coefficient distribution at different circumferential positions for external store seperation of supersonic inflow at t=0.25 s

    图 15  超声速来流条件下t=0.07 s时内埋投放流场中心截面马赫数及弹体表面压力分布云图

    Figure 15.  Contours of Mach number distribution on central plane and pressure distribution on missile surface for buried store seperation of supersonic inflow at t=0.07 s

    图 16  超声速来流条件下t=0.07 s内埋投放弹体表面不同周向位置处压力系数分布

    Figure 16.  Pressure coefficient distribution at different circumferential positions on missile surface for buried store seperation of supersonic inflow at t=0.07 s

    图 17  超声速来流条件下t=0.22 s时内埋投放流场中心截面马赫数及弹体表面压力分布云图

    Figure 17.  Contours of Mach number distribution on central plane and pressure distribution on missile surface for buried store seperation of supersonic inflow at t=0.22 s

    图 18  超声速来流条件下t=0.22 s内埋投放弹体表面不同周向位置处压力系数分布

    Figure 18.  Pressure coefficient distribution at different circumferential positions on missile surface for buried store seperation of supersonic inflow at t=0.22 s

    图 19  改进发射方式下弹体竖直方向速度、位移和俯仰角速度、俯仰角随时间变化曲线

    Figure 19.  Vertical velocity, displacement, pitch angular velocity and pitch angle of missile versus time for improved launch mode

    表  1  计算工况

    Table  1.   Calculation conditions

    工况 Ma 投放方式 弹射力A/N 弹射力B/N 弹射力合力/N 弹射力合力矩/(N·m)
    1 0.85 内埋 -10 679 -42 717 -53 396 12 174
    2 0.85 外挂 -10 679 -42 717 -53 396 12 174
    3 1.35 内埋 -10 679 -42 717 -53 396 12 174
    4 1.35 外挂 -10 679 -42 717 -53 396 12 174
    5 0.85 内埋 -42 717 -10 679 -53 396 -4 165
    6 1.35 外挂 -42 717 -10 679 -53 396 -4 165
    下载: 导出CSV

    表  2  投放前弹体受力对比

    Table  2.   Missile force comparison before launching

    来流条件 投放方式 竖直方向气动力合力/N 俯仰力矩/(N·m)
    亚声速 外挂 2 527 -3 393
    内埋 23 -149
    超声速 外挂 3 525 -7 698
    内埋 -169 267
    下载: 导出CSV
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出版历程
  • 收稿日期:  2016-06-08
  • 录用日期:  2016-08-11
  • 刊出日期:  2017-06-20

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