Drilling load modeling and validation based on the filling rate of auger flute in planetary sampling

Quan, Qiquan; Tang, Junyue; Fang, Yuan; Jiang, Shengyuan; Deng, Zongquan

doi:10.1016/j.cja.2016.05.003

Cited by 36 publications

(8 citation statements)

References 11 publications

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“…The only effective removing cutting chips solution is the spiral auger flute. Due to the fact that drilling loads or power consumptions are highly dependent on the removal condition [41], during this dry drilling process drilling loads will be more sensitive to the drilling parameters. Overall, these harsh working conditions will definitely aggravate the risk of the interplanetary drill, which all require a more robust and reliable control strategy.…”

Section: Limited On-orbit Sensor Resourcesmentioning

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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Section: Limited On-orbit Sensor Resourcesmentioning

confidence: 99%

Intelligent Drilling and Coring Technologies for Unmanned Interplanetary Exploration

Tang¹,

Quan²,

Jiang³

et al. 2018

Drilling

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“…China's Chang'e lunar exploration project also used an auger drill sampler to collect and return subsurface lunar regolith (Quan et al. 2017; Zhang & Ding 2017). Although auger transport has been widely implemented in the applications, modelling auger conveyance of granular materials is still a challenging subject (Imole et al.…”

Section: Introductionmentioning

confidence: 99%

“…Quan et al. (2017) proposed an index to characterize the condition for the occurrence of choking, a phenomenon in which the cuttings build up in the auger flight and cause the rotational torque to increase sharply (Statham, Hanagud & Glass 2012). Zhao et al.…”

Section: Introductionmentioning

confidence: 99%

“…Due to the advantages of auger transport, various drill samplers have been developed for different space exploration projects, such as ESA's MOONBIT project (Poletto et al 2015), NASA's ExoMars project (Zacny, Quayle & Cooper 2004;Firstbrook et al 2017) and Japan's LUNAR-A mission (Nakajima et al 1996;Nagaoka et al 2010). China's Chang'e lunar exploration project also used an auger drill sampler to collect and return subsurface lunar regolith (Quan et al 2017;. Although auger transport has been widely implemented in the applications, modelling auger conveyance of granular materials is still a challenging subject (Imole et al 2016).…”

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confidence: 99%

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Granular dynamics in auger sampling

et al. 2022

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From geotechnical applications to space exploration, auger drilling is often used as a standard tool for soil sample collection, instrument installation and others. Focusing on granular flow associated with the rotary drilling process, we investigate the performance of auger drilling in terms of sampling efficiency, defined as the mass ratio of the soil sample collected in the coring tube to its total volume at a given penetration depth, by means of experiments, numerical simulations as well as theoretical analysis. The ratio of rotation to penetration speed is found to play a crucial role in the sampling process. A continuum model for the coupled granular flow in both coring and discharging channels is proposed to elucidate the physical mechanism behind the sampling process. Supported by a comparison with experimental results, the continuum model provides a practical way to predict the performance of auger drilling. Further analysis reveals that the drilling process approaches a steady state with constant granular flow speeds in both channels. In the steady state, sampling efficiency decreases linearly with the growth of the rotation to penetration speed ratio, which can be well captured by the analytical solution of the model. The analytical solution also suggests that the sampling efficiency is independent of gravity in the steady state, which has profound implications for extraterrestrial sample collection in future space missions.

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“…Tian and Deng 6 proposed a new coring bit with a barrier ring structure, and the barrier ring structure could reduce soil disturbance during drilling. Quan et al 7 established a drilling load model based on the filling rate of auger flute (FRAF), which could be used to optimize the drilling parameters of the lunar regolith simulant. Zhang and Ding 8 established a penetration force and rotational torque (PFRT) model to describe the drilling forces, and the model could be used to optimize the structural parameters of the drill tool and the drilling strategies.…”

Section: Introductionmentioning

confidence: 99%

Research on a lunar mobile spiral surface-soil sampler

Hou

Guo

Cao

et al. 2020

Advances in Mechanical Engineering

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This article presents the design of a spiral sampling device to perform lunar soil sampling and packaging, considering the special lunar environment and the physical and mechanical properties of the lunar soil. Combining the mechanical properties of lunar soil and the geometrical characteristics of the sampling device, the contact model between particles and the contact parameters between device and particles were adjusted. Through a discrete element simulation of the sampling process, the particles’ streamline, which is between the screw conveying modules and the sampling bailer, is derived. This result provides a theoretical foundation for the structural optimization of the device. Finally, a sampling experiment in simulated lunar soil verifies the feasibility of the sampling device.

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Drilling load modeling and validation based on the filling rate of auger flute in planetary sampling

Cited by 36 publications

References 11 publications

Intelligent Drilling and Coring Technologies for Unmanned Interplanetary Exploration

Intelligent Drilling and Coring Technologies for Unmanned Interplanetary Exploration

Granular dynamics in auger sampling

Research on a lunar mobile spiral surface-soil sampler

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