| 高浓度颗粒流冲刷条件下硅橡胶和EPDM绝热材料动态烧蚀实验 |
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| 引用本文： | 张胜敏,胡春波,夏盛勇,孙翔宇,胡淑芳.高浓度颗粒流冲刷条件下硅橡胶和EPDM绝热材料动态烧蚀实验[J].推进技术,2011,32(2):240-244. |
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| 作者姓名： | 张胜敏 胡春波 夏盛勇 孙翔宇 胡淑芳 |
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| 作者单位： | 1. 西北工业大学燃烧、流动和热结构国家级重点实验室,陕西,西安,710072
2. 内蒙古合成化工研究所,内蒙古,呼和浩特,010076 |
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| 摘 要： | 利用X射线实时诊断技术(RTR)针对硅橡胶和EPDM绝热材料,开展了高浓度颗粒流冲刷条件下动态烧蚀实验研究,成功获得了绝热材料烧蚀表面退移过程的序列图像。研究表明:(1)在本实验条件下,硅橡胶绝热材料颗粒冲刷区域的瞬时烧蚀率在0～2s内迅速增加,2s之后瞬时烧蚀率略有下降并趋于稳定;EPDM绝热材料颗粒冲刷区域的瞬时烧蚀率在0～1s内迅速增加,1s之后瞬时烧蚀率趋于稳定;(2)相同冲刷条件下硅橡胶绝热材料抗颗粒流冲刷性能比EPDM绝热材料差,硅橡胶绝热材料不适合在高过载发动机中应用;(3)高浓度颗粒流冲刷条件下绝热材料的烧蚀率比常规条件下要严重的多,其机理主要是高温颗粒流对炭化层有强烈的机械剥蚀效应和热化学烧蚀作用。实验结果对硅橡胶和EPDM绝热材料烧蚀机理研究及烧蚀建模具有重要参考价值。
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| 关 键 词： | 固体火箭发动机 绝热材料 烧蚀 X射线实时诊断技术 |
| 收稿时间： | 2010/5/26 0:00:00 |
| 修稿时间： | 2010/9/10 0:00:00 |
Real-time ablation measurements on erosion of silicone rubber and EPDM material by highly concentrated particles |
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| ZHANG Sheng-min,HU Chun-bo,XIA Sheng-yong,SUN Xiang-yu and HU Shu-fang.Real-time ablation measurements on erosion of silicone rubber and EPDM material by highly concentrated particles[J].Journal of Propulsion Technology,2011,32(2):240-244. |
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| Authors: | ZHANG Sheng-min HU Chun-bo XIA Sheng-yong SUN Xiang-yu and HU Shu-fang |
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| Institution: | 1.National Key Lab.of Combustion,Flow and Thermo-Structure,Northwestern Polytechnical Univ.Xian 710072,China; 2.Inner Mongolia Synthetic Chemical Engineering Inst.Huhehot 010076,China) |
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| Abstract: | The experimental study of the silicone rubber and EPDM insulator eroded by highly concentrated particles were carried out and a series of dynamic recession images of insulation surface were obtained successfully based on real-time X-ray radiography technique(RTR).The experimental results show that(1)The transient ablation rate of silicone rubber increased rapidly within the first two seconds and it would become stable after two seconds.The transient ablation rate of EPDM increased rapidly within the first s... |
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| Keywords: | Solid rocket motor Insulation Ablation Real-time X-ray radiography technique(RTR) |
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