| 跨介质弹体出水稳定性 |
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| 引用本文： | 朱睿,张焕彬,庄启彬,温潍齐,何星宇,刘志荣. 跨介质弹体出水稳定性[J]. 北京理工大学学报, 2023, 43(1): 45-53. DOI: 10.15918/j.tbit1001-0645.2022.031 |
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| 作者姓名： | 朱睿 张焕彬 庄启彬 温潍齐 何星宇 刘志荣 |
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| 作者单位： | 厦门大学航空航天学院,福建,厦门 361005 |
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| 基金项目： | 装备预研教育部联合基金项目（6141A02033529）;“十三五”装备预研领域基金项目（61402060405） |
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| 摘 要： | 研究弹头构型、发射角及弹射速度对弹体跨介质稳定性的影响机制,为多样化弹道跨介质兵器/飞行器的设计提供试验及理论支持.开展弹体跨介质出水试验及数值仿真,经瞬时图像集解析获取弹体跨介质偏转角变化量及运动轨迹,构建高精度气/水跨介质数值模型,揭示弹体穿越气/水界面过程中弹头构型、发射速度、发射角对弹体承载分布及跨介质稳定性的作用机制.研究结果表明,弹体气/水跨介质数值模型计算误差<5%;同一弹体跨介质出水稳定性随发射速度、发射角增大而提高;相同发射工况时,各弹头构型跨介质出水稳定性：圆弹头>90°锥形头>120°锥形头>平弹头;跨介质弹体表面液膜形态对称性越好、液膜面积变化量越小则有利于减少弹体跨介质径向载荷振幅,提升跨介质稳定性.
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| 关 键 词： | 弹体 气/水跨介质 稳定性 偏转角 液膜 |
| 收稿时间： | 2022-02-03 |
Water-to-Air Stability of Trans-Phase Missile |
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| Affiliation: | School of Aerospace Engineering, Xiamen University, Xiamen, Fujian 361005, China |
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| Abstract: | The influence mechanism of the missile-head shape, launch angle and ejection velocity on the missile trans-phase stability was studied to provide the experimental and theoretical support for the design of diversified ballistic trans-phase weapon/aircraft. Carried out the missile water-to-air trans-phase experiments and numerical simulations, obtained the missile trans-phase deflection angle variation and trajectory through processing the transient images, established the high-precision air/water trans-phase numerical model, and the function mechanism of the missile head, launch velocity, launch angle on the load-sustaining distributions on the missile surface and the trans-phase stability as passing through the air/water interface was revealed. The research results indicated that the calculation error of the missile air/water trans-phase numerical model is < 5%; for the same missile model, the water-to-air trans-phase stability increases as the launch velocity, angle increase; under the same launch conditions, the water-to-air trans-phase stability of different missile-head shapes: round head > 90° conical head > 120° conical head > flat head; the better symmetric water film shape on the missile surface and the smaller water film area variation amid trans-phase process will reduce the missile trans-phase radial load amplitude, which improves the trans-phase stability. |
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