Mechanical Characteristics of Lunar Regolith Drilling and Coring and Its Crawling Phenomenon: Analysis and Validation

Tang, Junyue; Yang, Tian Xiong; Chen, Xiren; Zhang, Zhiheng; Tian, Ye; Zhang, Weiwei; Jiang, Shengyuan

doi:10.3390/aerospace9110709

Cited by 5 publications

(1 citation statement)

References 34 publications

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“…The Chinese Chang'e VII probe will be launched in 2026 to conduct environmental and resource exploration of the lunar South Pole. Drilling-based sampling, which requires a complicated soil-machine interaction coupling [2,3], is among the planned tasks. Research has been conducted on the thermal behavior of drilling-based sampling and soil particle systems.…”

Section: Introductionmentioning

confidence: 99%

Thermal Simulations of Drilling of Cryogenic Lunar Soils Containing Water Ice

et al. 2023

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Water ice is an important water source in lunar polar soil. Drilling and sampling lunar polar soil are important engineering tasks of lunar exploration. In view of the influence of temperature rise on the quality of samples obtained by drilling, the heat transfer and temperature rise in drilled ice-containing lunar soil were investigated. In this study, a thermal simulation model for drilling lunar soil was established based on the discrete element method (DEM). Simulations of the drilling temperature of lunar soil containing ice at 3–5% were performed assuming normal pressure and low temperature. After validating the feasibility and accuracy of the simulation method, the temperatures of the drilling tools and lunar soil were analyzed. Furthermore, drilling in a vacuum was simulated as well, and the results indicated that ice sublimation was negligible for reasonable drilling procedures in the current study.

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Section: Introductionmentioning

confidence: 99%

Thermal Simulations of Drilling of Cryogenic Lunar Soils Containing Water Ice

et al. 2023

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Sampling dynamic analysis and discrete element simulation on a deep layer regolith drill for extraterrestrial celestial bodies

Wang,

Li,

et al. 2024

Acta Astronautica

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Low-velocity impact response of lunar and Martian regolith simulants: Implications for lunar and Martian surface explorations

Ishii,

Kioka,

Huang

et al. 2024

Physics of Fluids

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The granular mechanics of lunar and Martian regolith remain inadequately understood, impeding progress in successful exploration, landing, drilling, sampling, and construction activities on extraterrestrial surfaces. This study aims to bridge this knowledge gap by investigating the granular behavior of the lunar and Martian regolith under impact conditions. Impact cratering experiments were conducted for the lunar highlands, lunar mare, Martian regolith simulants (LHS-1, LMS-1, and MGS-1, respectively), and terrestrial silica sand with similar particle sizes as target granular materials, with a sphere projectile dropping at low velocities. A systematic analysis was undertaken to elucidate the influence of parameters, including the fall height of the projectile, impact velocity, kinetic energy of the projectile, porosity, cohesion, and internal friction angle, on the resulting crater depths. Our findings demonstrate that the crater depths of regolith layers of the lunar highlands and Martian surfaces are greater than those of the lunar mare regolith and terrestrial silica sand layers. For example, the crater depth of the lunar highland regolith layer is about two times greater than that of the terrestrial silica sand layer at an impact velocity of 40–70 cm/s. Additionally, our power-law scaling highlights less resistance to crater impact in the lunar and Martian regolith layers than in the terrestrial sand layer. Our study highlights a significant difference in granular behavior between the Earth's sand layer and the lunar and Martian regolith layers, providing valuable insights for future exploration, coring, drilling, and resource utilization endeavors on the lunar and Martian surfaces.

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Mechanical Characteristics of Lunar Regolith Drilling and Coring and Its Crawling Phenomenon: Analysis and Validation

Cited by 5 publications

References 34 publications

Thermal Simulations of Drilling of Cryogenic Lunar Soils Containing Water Ice

Thermal Simulations of Drilling of Cryogenic Lunar Soils Containing Water Ice

Sampling dynamic analysis and discrete element simulation on a deep layer regolith drill for extraterrestrial celestial bodies

Low-velocity impact response of lunar and Martian regolith simulants: Implications for lunar and Martian surface explorations

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