| 引用本文: | 卞云龙,李海阳,申志彬,等.烧蚀对脉冲发动机软质隔层打开过程影响的试验设计.[J].国防科技大学学报,2024,46(6):25-32.[点击复制] |
| BIAN Yunlong,LI Haiyang,SHEN Zhibin,et al.Experimental design for the effect of ablation on the opening process of soft insulator in pulse motor[J].Journal of National University of Defense Technology,2024,46(6):25-32[点击复制] |
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| 烧蚀对脉冲发动机软质隔层打开过程影响的试验设计 |
| 卞云龙1,2,3,李海阳1,3,申志彬1,3,朱洪兵2,王志强2 |
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(1. 国防科技大学 空天科学学院, 湖南 长沙 410073;2. 中国航天科工集团公司六院四十一所, 内蒙古 呼和浩特 010010;3. 空天任务智能规划与仿真湖南省重点试验室, 湖南 长沙 410073)
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| 摘要: |
| 针对脉冲发动机软质隔层在工作过程中状态与规律无法准确描述等问题,设计了软质隔层打开试验系统,近似模拟了隔层在脉冲发动机中的工作历程,对比了烧蚀与未烧蚀隔层打开特性,结合电镜扫描微观手段,从机理分析了烧蚀与未烧蚀隔层变形规律。试验结果表明,烧蚀模拟试验计算与某试验发动机隔层烧蚀率近似相当,相对误差可控制在5%以内；未烧蚀隔层变形呈“谷堆形”,烧蚀后隔层变形呈“灯泡形”。所建立的软质隔层打开试验系统可为脉冲发动机软质隔层设计与试验验证提供一种可行的技术途径和手段。 |
| 关键词: 脉冲固体火箭发动机 软质隔层 工作过程 模拟试验 |
| DOI：10.11887/j.cn.202406003 |
| 投稿日期：2022-06-29 |
| 基金项目:国家自然科学基金资助项目(11872372)；湖南省杰出青年基金资助项目(2021JJ10046) |
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| Experimental design for the effect of ablation on the opening process of soft insulator in pulse motor |
| BIAN Yunlong1,2,3, LI Haiyang1,3, SHEN Zhibin1,3, ZHU Hongbing2, WANG Zhiqiang2 |
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(1. College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China;2.The 41 st Institute of the Sixth Academy of CASIC, Huhhot 010010, China;3. Hunan Key Laboratory of Intelligent Planning and Simulation for Aerospace Missions, Changsha 410073, China)
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| Abstract: |
| Aiming at the problem that the soft insulator of pulse motor can not accurately describe its state and regular in the actual working process, a soft insulator opening test system was designed, which approximately simulated the working process of the soft insulator in the pulse motor. The opening characteristics of the ablative and non ablative soft insulator were compared, and the deformation law of the ablative and non ablative interlayer from the mechanism was explained by the means of scanning electron microscope. The test results show that the ablation rate calculated by the ablation simulation test is approximately equivalent to the insulator of a test pulse motor, and the relative error can be controlled within 5%; the deformation of the non ablated insulator is “valley pile” and the deformation of the ablated insulator is “bulb”. The established soft insulator layer opening test system can provide a feasible technical approach and means for the design and test verification of the soft insulator of pulse motor. |
| Keywords: pulse solid rocket motor soft insulator working process simulation experiment |
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