1. 北京理工大学 宇航学院, 北京 100081
2. 中国航天科技集团有限公司第四研究院第四十一所 燃烧、热结构与内流场重点实验室, 陕西 西安 710025
*邮箱: david78lee@bit.edu.cn
收稿:2022-03-15,
网络出版:2023-08-07,
纸质出版:2023-07-30
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田忠亮, 李军伟, 贺业, 等. 横向过载下锥孔三维药柱的内弹道特性[J]. 兵工学报, 2023,44(7):1896-1907.
Zhongliang TIAN, Junwei LI, Ye HE, et al. Analysis of Interior Ballistic Characteristics of Conical Three-Dimensional Charge Column Under Lateral Overload[J]. Acta Armamentarii, 2023, 44(7): 1896-1907.
田忠亮, 李军伟, 贺业, 等. 横向过载下锥孔三维药柱的内弹道特性[J]. 兵工学报, 2023,44(7):1896-1907. DOI: 10.12382/bgxb.2022.0162.
Zhongliang TIAN, Junwei LI, Ye HE, et al. Analysis of Interior Ballistic Characteristics of Conical Three-Dimensional Charge Column Under Lateral Overload[J]. Acta Armamentarii, 2023, 44(7): 1896-1907. DOI: 10.12382/bgxb.2022.0162.
高空中作机动飞行的导弹易出现内弹道异常
严重时可能导致飞行任务失败。为了分析内弹道异常机理
对横向过载下发动机内弹道特性展开研究
进行过载下丁羟三组元推进剂燃速测量试验
建立过载下该推进剂燃速模型;基于此模型
模拟锥孔三维药柱非均匀燃面退移
进行全程横向过载、短时恒定横向过载、短时振荡横向过载三种过载方式下发动机的内弹道特性研究。研究结果表明:横向过载会使燃烧室压强增加
绝热层暴露时间提前;振荡式过载产生的压强振荡频率与过载振荡频率一致;瞬间横向过载会使燃烧室压强发生跃迁
在100
g
过载下
压强增加8%左右
过载消失
压强骤降;若受横向过载时间间隔一定
则导弹在压强稳定时做机动飞行更有利。
The occurrence of internal ballistic anomalies during high-altitude missile maneuvering can result in flight mission failures. To analyze the abnormal mechanism of internal ballistics
the internal ballistics characteristics of motor under lateral overload were studied. Experimental measurements of the burning rate of HTPB ternary propellant under overload conditions were conducted
and a burning rate model of the propellant under overload was established. Based on this model
the non-uniform combustion surface retreat of cone-hole grain was simulated. The interior ballistic characteristics of cone-hole grain under three overload modes
namely
full lateral overload
short-time constant lateral overload
and short-time oscillation lateral overload
were studied. The results show that lateral overload increases the pressure in the combustion chamber and accelerates the exposure time of the insulation layer. The pressure oscillation frequency produced by oscillating overload is consistent with that of overload oscillation. Instantaneous lateral overload leads to a transitional increase in combustion chamber pressure. Under 100
g
overload
the pressure increases by about 8%
the overload disappears
and the pressure plummets. When the lateral overload time interval i
s constant
stable pressure conditions are advantageous for missile maneuvering under overload conditions.
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