Feeding Design and Experimental Study of Iodine Electric Propulsion System

被引：0
|
作者：
Ye Z.-W. [1 ]
Wang P.-Y. [1 ]
Hua Z.-W. [1 ]
Hang G.-R. [2 ,3 ]
机构：
[1] School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai
[2] Shanghai Institute of Space Propulsion, Shanghai
[3] Shanghai Engineering Research Center of Space Engine, Shanghai
来源：
Tuijin Jishu/Journal of Propulsion Technology | 2022年 / 43卷 / 09期
关键词：
Combined heating; Feeding system; High density storage; Iodine electric propulsion system; Microflow control;
D O I：
10.13675/j.cnki.tjjs.210125
中图分类号：
学科分类号：
摘要：
Iodine has been paid more and more attention because of its low cost and low pressure and high density storage. Iodine feeding system，the key component of iodine electric propulsion system，bears the function of solid-gas phase change and flow supply. In order to improve the accuracy and stability of the flow supply which directly affects the performance of the cathode and the thruster，a new iodine storage and feeding system was designed and can be heated in various ways，with a high-precision weight sensor used in vacuum chambers，which realizes the dynamic flow monitoring and the iodine vapor flow control at the mg/s level. Three thermal control methods of external heating，internal radiative heating and combined heating of the tank were tested and measured to explore the law of their influence on the flow rate and stability. The results show that the three heating methods can supply stable flow for a long time under the conditions required by the experiment. Radiative heating has the fastest response time，taking only about 10 minutes，compared with more than an hour for external heating. Combined heating is more complicated，but it can further reduce the power consumption. © 2022 Journal of Propulsion Technology. All rights reserved.
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