无伞末敏弹大攻角扫描运动稳定性分析

doi:10.7527/S1000-6893.2015.0051

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无伞末敏弹大攻角扫描运动稳定性分析

舒敬荣¹, 杨玉林², 张婷¹, 杨海波¹

1. 陆军军官学院二系, 合肥 230031;
2. 陆军军官学院科研部, 合肥 230031

收稿日期:2014-10-13 修回日期:2015-02-21 出版日期:2015-10-15 发布日期:2015-03-18
通讯作者: 舒敬荣, Tel.: 0551-65920749 E-mail: shujr1974@126.com E-mail:shujr1974@126.com
作者简介:舒敬荣男, 博士, 副教授, 硕士生导师。主要研究方向: 飞行力学和外弹道学。
基金资助:
国家自然科学基金 (11272356); 中国博士后科学基金 (2012M521842)

Analysis on kinetic stability for non-parachute terminal sensitive ammunition's scanning motion at large angle of attack

SHU Jingrong¹, YANG Yulin², ZHANG Ting¹, YANG Haibo¹

1. Department 2, Army Officer Academy, Hefei 230031, China;
2. Scienfific Research Department, Army Officer Academy, Hefei 230031, China

Received:2014-10-13 Revised:2015-02-21 Online:2015-10-15 Published:2015-03-18
Supported by:
National Natural Science Foundation of China (11272356); China Postdoctoral Science Foundation (2012M521842)

摘要/Abstract

摘要：

针对无伞末敏弹稳态扫描时做大攻角圆运动的特点,求取了其在一般形式赤道阻尼力矩作用下攻角方程的近似解析解。在此基础上,运用振幅平面法分析了此种情况下的运动稳定性。结果表明:与在二次方赤道阻尼力矩作用下无伞末敏弹不可能形成稳定大攻角圆运动以实现稳态扫描不同,在考虑大攻角时赤道阻尼力矩不仅与攻角大小有关,还与攻角变化率有关,且章动阻尼与进动阻尼特性不同时,弹丸所受赤道阻尼力矩为一般形式的阻尼力矩情况下,无伞末敏弹可以形成稳定大攻角圆运动,并推导出了此种情况下实现稳态圆运动应满足的条件,给出了算例,为无伞末敏弹的结构设计和气动设计提供了理论参考。

关键词: 末敏弹, 灵巧弹药, 大攻角, 运动稳定性, 圆运动, 稳态扫描

Abstract:

Aimed at the characteristic of large angle of attack circular motion at stable scanning stage, the angle of attack equation's approximate analytical solution for non-parachute terminal sensitive ammunition is gained under the action of general-form equatorial damping moment. On this basis, the kinetic stability in this case is analyzed by the method of amplitude plane. The result shows that different from the fact that non-parachute terminal sensitive ammunition under the action of quadratic equatorial damping moment cannot form stable large angle of attack circular motion to realize stable scanning, the one which is under the action of general-form equatorial damping moment can do it, in which the fact that the equatorial damping moment is related not only to the angle of attack's amplitude but also to its change rate is considered, and the fact that nutation damping's feature is different from that of precession damping is also considered. Finally, the requirement to be satisfied to realize stable circular motion is deduced and the calculating example is given, which provide a theoretical reference for the structural and pneumatic design for non-parachute terminal sensitive ammunition.

Key words: terminal sensitive ammunition, smart munition, large angle of attack, kinetic stability, circular motion, stable scanning

中图分类号:

V212
TJ410.1

舒敬荣, 杨玉林, 张婷, 杨海波. 无伞末敏弹大攻角扫描运动稳定性分析[J]. 航空学报, 2015, 36(10): 3411-3417.

SHU Jingrong, YANG Yulin, ZHANG Ting, YANG Haibo. Analysis on kinetic stability for non-parachute terminal sensitive ammunition's scanning motion at large angle of attack[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015, 36(10): 3411-3417.

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E-mail：hkxb@buaa.edu.cn

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无伞末敏弹大攻角扫描运动稳定性分析

Analysis on kinetic stability for non-parachute terminal sensitive ammunition's scanning motion at large angle of attack

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