Recovery rate prediction in lunar regolith simulant drilling

Quan, Qiquan; Chen, Chongbin; Deng, Zongquan; Tang, Junyue; Jiang, Shengyuan

doi:10.1016/j.actaastro.2017.01.002

Cited by 22 publications

(2 citation statements)

References 17 publications

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“…The real lunar soil particle is modeled as a particle with three spherical particles clumped together in the software. [39][40][41] Based on Generic EDEM Material Model database that is a special module in EDEM software, the GEEM parameters of equivalent sample particles are determined. 42 The process can be reformulated in detail as follows: (1) Set the particle size's range and the density of the sample block.…”

Section: Simulation Model For Lunar Soil Particles and Profilementioning

confidence: 99%

Numerical simulation on interaction process between impact penetrator and lunar soil particles for lunar subsurface exploration

Shen

Deng

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part G:

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Unmanned in-situ exploration is an important technique to study the physical and mechanical parameters of lunar composition and evolution. The impact penetrator is an effective device for in-situ detection of the lunar soil profile at predetermined depth. Because of the lack of real lunar soil samples, it is very difficult to study and evaluate the performance of the impact penetrator. In order to truly reflect the interaction between the impact penetrator and lunar soil particles, a simulation model of the lunar soil body was established by means of discrete-element analysis, and the model parameters were matched and verified by the experimental method. Based on this model, the interaction behaviors between the penetrators with different head configurations and the lunar soil body were simulated. The stress field distribution in the lunar soil body and particle movement patterns during the penetrating process were revealed, which reflects the working principle and performance of the penetrator. The numerical simulation on the interaction process between the impact penetrator and lunar soil particles provides a feasible and effective method for the design and optimization of the penetrator, which will contribute to the development of lunar subsurface in-situ exploration technologies.

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Section: Simulation Model For Lunar Soil Particles and Profilementioning

confidence: 99%

Numerical simulation on interaction process between impact penetrator and lunar soil particles for lunar subsurface exploration

Shen

Deng

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part G:

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“…As the primary goal of interplanetary exploration is to exam the evidence of lie by scamping the subsurface soils, it is extremely important to acquire as much soil core as possible under acceptable drilling loads. Furthermore, as the stratification information of planetary samples reflects the evolutionary history of early stars [28], it is necessary to preserve its stratification during the coring process for further analysis. Therefore, the authors proposed a novel flexible tube coring method to preserve the stratification of soil sample [29].…”

Section: Introductionmentioning

confidence: 99%

Intelligent Drilling and Coring Technologies for Unmanned Interplanetary Exploration

Tang¹,

Quan²,

Jiang³

et al. 2018

Drilling

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The robotic technology, especially the intelligent robotics that can autonomously conduct numerous dangerous and uncertain tasks, has been widely applied to planetary explorations. Similar to terrestrial mining, before landing on planets or building planetary constructions, a drilling and coring activity should be first conducted to investigate the in-situ geological information. Given the technical advantages of unmanned robotics, utilizing an autonomous drill tool to acquire the planetary soil sample may be the most reliable and cost-effective solution. However, due to several unique challenges existed in unmanned drilling and coring activities, such as long-distance time delay, uncertain drilling formations, limited sensor resources, etc., it is indeed necessary to conduct researches to improve system's adaptability to the complicated geological formations. Taking drill tool's power consumption and soil's coring morphology into account, this chapter proposed a drilling and coring characteristics online monitoring method to investigate suitable drilling parameters for different formations. Meanwhile, by applying pattern recognition techniques to classify different types of potential soil or rocks, a drillability classification model is built accurately to identify the current drilling formation. By combining suitable drilling parameters with the recognized drillability levels, a closed-loop drilling strategy is established finally, which can be applied to future interplanetary exploration.

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Modeling and experimental investigation of drilling into lunar soils

Chen

Wang

et al. 2018

Appl. Math. Mech.-Engl. Ed.

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Recovery rate prediction in lunar regolith simulant drilling

Cited by 22 publications

References 17 publications

Numerical simulation on interaction process between impact penetrator and lunar soil particles for lunar subsurface exploration

Numerical simulation on interaction process between impact penetrator and lunar soil particles for lunar subsurface exploration

Intelligent Drilling and Coring Technologies for Unmanned Interplanetary Exploration

Modeling and experimental investigation of drilling into lunar soils

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