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A conceptual open pit mine architecture for the Moon environment

Seweryn Karol, Kolusz Adam, Świca Izabela, Tkacz Arkadiusz, Gallina Alberto, Katzer Jacek, Kobaka Janusz, Konecny Petr, Młynarczyk Przemysław

Artificial Satellites : Journal of Planetary Geodesy

2024

Vol. 59, No. 1

11--41

In situ resource utilization (ISRU) activities are receiving increasing attention, both from space agencies and among the international science and industrial community. Prominent examples of ongoing ISRU space programs are the NASA Artemis program and the Terrae Novae program run by the European Space Agency. In technical sciences, there are at least three groups of activities related to ISRU: prospecting bodies in the context of space missions, technological investigations related to surface infrastructure and operations, and conceptual analyses of future mining activities. The present paper belongs to the third group and brings new insights into a potential open pit mine operating on the Moon. There are several novel contributions: the definition of the objectives of the mine, based on economic indicators; a conceptual description of a pit architecture dedicated to excavating ilmenite-rich feedstock; and a qualitative and quantitative description of the chosen processes and the mine’s topology. In the paper, there are also added links to other papers connected with ISRU activities.

Sensitivity analysis of the dem model numerical parameters on the value of the angle of repose of lunar regolith analogs

Młynarczyk Przemysław, Kolusz Adam, Gallina Alberto

Artificial Satellites : Journal of Planetary Geodesy

2023

Vol. 58, Special Issue 1

188--202

The discrete element method (DEM) is a numerical technique used in many areas of modern science to describe the behavior of bulk materials. Terramechanics of planetary soil analogs for in situ resource utilization activities is a research field where the use of DEM appears to be beneficial. Indeed, the close-to-physics modeling approach of DEM allows the researcher to gain much insight into the mechanical behavior of the regolith when it interacts with external devices in conditions that are hard to test experimentally. Nevertheless, DEM models are very difficult to calibrate due to their high complexity. In this paper, we study the influence of fundamental model parameters on specific simulation outcomes. We provide qualitative and quantitative assessments of the influence of DEM model parameters on the simulated repose angle and computational time. These results help to understand the behavior of the numerical model and are useful in the model calibration process.