| 姿控推进系统发动机关机的管路瞬变特性 |
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| 引用本文： | 聂万胜,陈新华,戴德海,夏鹏,庄逢辰.姿控推进系统发动机关机的管路瞬变特性[J].推进技术,2003,24(1):6-8. |
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| 作者姓名： | 聂万胜 陈新华 戴德海 夏鹏 庄逢辰 |
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| 作者单位： | 1. 装备指挥技术学院,北京,101416
2. 上海动力机械研究所,上海,200233 |
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| 基金项目： | 国家自然科学基金资助项目 (5 0 1760 5 4 ) |
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| 摘 要： | 从一维液体瞬变管路方程出发，采用有限差分格式的特征线方法，针对某姿控推进系统发动机真实氧化剂管路的关机瞬变特性进行了数值研究，对系统不同部位的动态特性进行了计算，喷注前的最大瞬变压力达到储箱压力的3倍，得到的结果与试车数据是一致的，对液体发动机管路工程设计具有参考价值，表明该方法可以方便地对包括许多管路，阀门和推力室的复杂系统进行动态特性分析。
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| 关 键 词： | 管路 瞬变特性 非定常流 有限差分理论 特征线法 水冲击 姿态控制火箭发动机 |
| 文章编号： | 1001-4055(2003)01-0006-03 |
| 修稿时间： | 2001年11月12 |
Transient characteristics during shutdown operation of liquid feed line for attitude control propulsion subsystem |
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| NIE Wan sheng,CHEN Xin hu,DAI De hai,XIA Peng and ZHUANG Feng.Transient characteristics during shutdown operation of liquid feed line for attitude control propulsion subsystem[J].Journal of Propulsion Technology,2003,24(1):6-8. |
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| Authors: | NIE Wan sheng CHEN Xin hu DAI De hai XIA Peng and ZHUANG Feng |
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| Institution: | NIE Wan sheng 1,CHEN Xin hua 1,DAI De hai 2,XIA Peng 1,ZHUANG Feng chen 1 |
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| Abstract: | One dimensional equations for liquid transients in propellant feed lines were considered. By means of the finite difference scheme of characteristic method, the transient flows were simulated for the attitude control propulsion subsystem during shutdown operation. The effect of different condition on dynamic behavior was investigated. The calculated results are identical with test data-the maximum transient pressure in front of the injector is equal to three times of the tank pressure. The results are valuable for designers. It shows that the method can be used to analyze dynamic performance of complex propulsion system consisting of numerous pipes, valves and thrusters. |
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| Keywords: | Attitude control rocket engine Unsteady flow Finite difference theory Method of characteristic curve Water impingement |
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