期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
横向运动板对长杆弹侵彻的偏转作用
1
作者 李治源 孙立志 史忠鹏 《军械工程学院学报》 2011年第5期22-25,共4页
弹体的攻角直接影响其侵彻能力,而横向运动板能使弹体发生偏转改变攻角,间接影响弹体的侵彻能力。在一定条件下,推导长杆弹在单层横向运动板作用下的偏转模型,并利用有限元仿真软件ANSYS/LS-rDYNA对长杆弹侵彻横向运动板的过程进... 弹体的攻角直接影响其侵彻能力,而横向运动板能使弹体发生偏转改变攻角,间接影响弹体的侵彻能力。在一定条件下,推导长杆弹在单层横向运动板作用下的偏转模型,并利用有限元仿真软件ANSYS/LS-rDYNA对长杆弹侵彻横向运动板的过程进行数值模拟。通过对偏转模型及仿真结果的分析,发现两者较为相符。研究结果显示:长杆弹侵彻横向运动板时,弹体会发生偏转,偏转的角速度先增后减,最后为0rad/s,此时偏转角最大;弹体速度方向也会发生偏转,其最终偏转角与弹体轴线的偏转角接近。 展开更多
关键词 横向运动板 长杆 偏转 弹速偏转 数值模拟
下载PDF
Dynamics of a deflectable-nose missile 被引量:3
2
作者 SUN XiaoFeng GU LiangXian GONG ChunLin 《Science China(Technological Sciences)》 SCIE EI CAS 2012年第12期3483-3494,共12页
The dynamics of a supersonic missile with a deflectable nose are studied. To describe the effects of nose deflection on the dynamic model, theorems of momentum and angular momentum are adopted to develop the translati... The dynamics of a supersonic missile with a deflectable nose are studied. To describe the effects of nose deflection on the dynamic model, theorems of momentum and angular momentum are adopted to develop the translational equation and rotation equation, respectively. Because the exact model is complex, it is simplified. The simplified model suggests that the main influence of nose deflection on the dynamic model is due to the product of the time derivatives of the azimuth angle and the elevation angle, which makes the dynamic model an impulsive differential system. Considering the aerodynamic characteristics a numerical simulation is sufficient to show the open-loop characteristics of the missile. 展开更多
关键词 DYNAMICS deflectable nose morphing missile theorems of momentum and angular momentum impulsive differential system
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部