| 引用本文: | 陶玉静,田章福,王振国.低温流量控制系统试验研究.[J].国防科技大学学报,2006,28(4):6-9 ,21.[点击复制] |
| TAO Yujing,TIAN Zhangfu,WANG Zhenguo.Experiment Study of the Mass Flow Control System[J].Journal of National University of Defense Technology,2006,28(4):6-9 ,21[点击复制] |
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| 低温流量控制系统试验研究 |
| 陶玉静, 田章福, 王振国 |
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(国防科技大学 航天与材料工程学院，湖南 长沙 410073)
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| 摘要: |
| 低温可调汽蚀文氏管是低温流量控制系统的关键部件，本文选用步进电机控制调节针锥的位移。通过大量冷态试验，在大范围变化工况、变化喉部面积及变化背压条件下，利用水对低温流量控制系统进行研究，得到了流量系数、压力恢复系数的变化规律。利用液氧标定，对冷态试验结果进行修正。并将低温流量控制系统用于三组元模型发动机热态试验中，成功实现了流量调节和工况转换。 |
| 关键词: 低温 可调汽蚀文氏管 冷试 热试 |
| DOI： |
| 投稿日期：2006-02-26 |
| 基金项目:国家863高技术资助项目(2003AA722011) |
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| Experiment Study of the Mass Flow Control System |
| TAO Yujing, TIAN Zhangfu, WANG Zhenguo |
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(College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| Throttling Venturi for cryogenic propellants is the key component of the mass flow control system. The step motor was used to control the displacement of the tapered rod. And water is used in cold test. Through changing operating conditions, throat area and back pressure, the change rule of discharge coefficient and pressure recovery factor were found. Then liquid oxygen was used to modify the results of cold test. The mass flow control system was used in firing test of tripropellant model engine, which shows the system can control the mass flow of liquid oxygen accurately and change the operating conditions successfully. |
| Keywords: cryogenic throttling venturi cold test firing test |
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