| 液氧平均流量测量研究 |
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| 引用本文： | 李建军,薛宁.液氧平均流量测量研究[J].火箭推进,2010,36(1):67-70. |
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| 作者姓名： | 李建军 薛宁 |
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| 作者单位： | 西安航天动力试验技术研究所,陕西,西安,710100 |
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| 摘 要： | 以液氧/煤油发动机试验中液氧平均流量测量为研究对象,主要介绍了其组成、测量原理及体积流量和质量流量的计算方法。采用分节式电容液面计测量液氧稳态平均流量,为准确测量低温推进剂流量开辟了一条新途径。为了减小涡轮流量计因水校后直接用于低温测量引起的系统误差,利用平均流量测量数据在原位进行校验。校验原理是根据质量守恒原理,以容器内测得的平均体积流量为基准,求出涡轮流量计在实用状态下的流量特性方程,由该方程提供液氧流量。
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| 关 键 词： | 液氧／煤油发动机 分节式电容液面计 涡轮流量计 校验 |
Research on measurement of LOX mean flow rate |
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| Li Jianjun,Xue Ning.Research on measurement of LOX mean flow rate[J].Journal of Rocket Propulsion,2010,36(1):67-70. |
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| Authors: | Li Jianjun Xue Ning |
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| Institution: | (Xi＇an Aerospace Propulsion Test Technique Institute, Xi＇an 710100, China) |
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| Abstract: | Research on measurement of LOX mean flow rate in the LOX/kerosene rocket engine test was conducted. The measurement concept and method of volume and mass flow rate calculation were introduced in this paper. In order to reduce the system error of turbine flow meter, the flow meter should be calibrated with the data of LOX mean flow rate measured at cryogenic condition. The principle for calibration is the mass conservation law. Based on the mean volume flow rate mea- sured in the propellant tank, the equation of flow rate performance for the turbine flow meter can be solved, thus flow rate of the LOX be obtained. |
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| Keywords: | LOX/kerosene rocket engine sectionalized capacitive liquid-level meter turbine flow meter calibration |
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