Journal of Space Science and Experiment >
Experimental Study on Level Measurement of Lunar Regolith Simulant for In-Situ Resource Utilization
Online published: 2025-04-22
In response to the technical requirements for powder level measurement for in-situ space resource utilization, this study proposes a level measurement method based on interdigital capacitors. The measurement characteristics were experimentally investigated with lunar regolith simulant in a vacuum environment. The results indicate that the capacitance of the interdigital capacitor varies linearly with the powder level, exhibiting a sensitivity parameter ranging from 10−1 to 100 pF/mm. This sensitivity is influenced by electrode structure parameters and powder layer thickness, with the electrode spacing and insulating layer thickness having the most significant impact. To achieve a higher sensitivity, smaller electrode spacing and insulating layer thickness should be used. Additionally, for a given electrode spacing, there exists an optimal electrode width that maximizes the sensitivity parameter. This study demonstrates that interdigital capacitors are suitable for measuring the powder of level of lunar regolith simulant in a vacuum environment. Furthermore, their underlying working principle suggests potential applications in powder arching detection and powder layer thickness measurement in future space missions.
Guanqing LIU , Weicheng PAN , Zepeng ZHU , Shuiqing LI . Experimental Study on Level Measurement of Lunar Regolith Simulant for In-Situ Resource Utilization[J]. Journal of Space Science and Experiment, 2025 , 2(1) : 104 -111 . DOI: 10.19963/j.cnki.2097-4302.2025.01.013
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