Propellant management devices (PMDs) are a key component used to manage liquid propellant in a propellant tank under zero gravity conditions. A microgravity drop tower test system was established to investigate the performance of a PMD. A single module was used for the experiments, and the microgravity level was less than . Anhydrous ethanol was used as the simulate liquid. Different volume fractions of liquid were used to study the influence of the PMD on performance management. Experiments were conducted with the position of the container oriented in different directions. Changes in the gas-liquid interface were studied during the test. This kind of vane transports liquid through the rectangular area between the vane and the wall. The velocity flows along the vane of different liquid volume fractions in the tank were different at the beginning () compared with the end of the test. The liquid relocation time was less than 0.8 s while the liquid volume fraction was larger than 25%. The liquid relocation time was prolonged when the liquid volume fraction was less than 25%. The liquid climbing height along the vane under microgravity increased as the volume fraction of liquid reduced. The climbing velocity of the liquid is half reduction when the liquid volume fraction is small. The time for the liquid transferred from the top of the tank to the liquid outlet can be obtained by climbing velocity. It shows that the maneuverability of the satellite decreases at the end of its life. The above results are applicable to all propellant tank with vertical vanes. These results provide a favorable reference for further optimized design of vertical vane-type propellant tanks.

中文翻译：

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使用落塔测试在微重力条件下测试叶片型推进剂罐中的液体分布

推进剂管理装置（PMD）是用于在零重力条件下管理推进剂罐中液体推进剂的关键组件。建立了微重力滴塔测试系统以研究PMD的性能。实验使用单个模块，并且微重力水平小于。使用无水乙醇作为模拟液体。使用不同体积分数的液体来研究PMD对性能管理的影响。在容器的位置朝向不同方向进行实验。在测试过程中研究了气液界面的变化。这种叶片通过叶片和壁之间的矩形区域输送液体。沿罐中不同液体体积分数的叶片的流速在开始时是不同的（）与测试结束相比。液体重新定位时间小于0.8 s，而液体体积分数大于25％。当液体体积分数小于25％时，液体迁移时间延长。随着液体体积分数的减少，沿微重力作用沿叶片的液体爬升高度增加。当液体体积分数小时，液体的爬升速度降低一半。液体从罐顶部转移到液体出口的时间可以通过爬升速度获得。它表明卫星的可操纵性在其寿命尽头时就降低了。以上结果适用于所有带有垂直叶片的推进剂罐。这些结果为进一步优化垂直叶片式推进剂舱的设计提供了有益的参考。