Excavation System for Lunar Resource Management Based on Screw Conveying Auger Technology

Radulescu, Mircea-Vlad; Landon, Ben; Moditis, Kyriakos; Friedlaender, Thomas; Radziszewski, Peter

doi:10.2514/6.2011-125

Cited by 1 publication

(16 citation statements)

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“…The model presented by Radulescu et al [34] obtained the output mass flow _ m OUT in kg/s of an auger conveyor using Eq. 1.…”

Section: Radulescu Modelmentioning

confidence: 99%

“…The Radulescu model [34] further simplifies the performance predictions of an auger conveyor by not considering the filling ratio of the casing volume or the auger inclination angle. It also uses a single-component approach to calculate the system power requirements.…”

Section: Radulescu Modelmentioning

confidence: 99%

“…To validate the present model, a comparison with previously reported experimental data has been conducted. Two previous attempts to model the behaviour of a conveyor system for lunar regolith transportation have been considered, Radulescu [34] and Ray et al (2008) [36]. These models are presented in the following sections, and their predictions are compared with the predictions of the proposed model.…”

Section: Introductionmentioning

confidence: 99%

“…There is a lack of characterised setup results for ISRU auger conveyor systems reflecting lunar conditions, with considerable differences between experimental setups [34,43]. Lunar regolith simulants, although they are fundamentally different from the actual regolith, provide the best approximation to the material that a conveyor would need to withstand [42,43].…”

Section: Introductionmentioning

confidence: 99%

“…Lunar regolith simulants, although they are fundamentally different from the actual regolith, provide the best approximation to the material that a conveyor would need to withstand [42,43]. Despite this, a considerable number of studies [17,34] generally use uncharacterised sand as a lunar regolith analogue for proof-of-concept studies. Although there are significant differences between sand and regolith simulants, the high cost of the simulants can make it prohibitively expensive to conduct large-scale experimentation.…”

Section: Introductionmentioning

confidence: 99%

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A novel approach to the analytical modelling of an auger conveyor system for lunar regolith transportation

et al. 2022

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Auger-based transportation systems are a promising method to transport lunar regolith for in situ resource utilisation. An analytical model based on terrestrial auger conveyor industry guidelines is used to predict the behaviour and performance parameters of an auger conveyor system under a range of initial conditions. Key aspects of the model have been validated with published experimental data. The proposed model produces more accurate predictions than previous methods and calculates the inclination angle with the best conveying efficiency. The proposed model output flow predictions have on average $$47\%$$ 47 % less deviation from the experimental data mean than previous model predictions, while the predictions for power requirements without considering energy losses present 42.9% and $$59.2\%$$ 59.2 % less deviation than previous predictions. When the losses are considered, the proposed model predictions are 70% and $$86.4\%$$ 86.4 % more accurate than the previous models, which have been found to underestimate the power requirements of this type of conveyors.

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“…The model presented by Radulescu et al [34] obtained the output mass flow _ m OUT in kg/s of an auger conveyor using Eq. 1.…”

Section: Radulescu Modelmentioning

confidence: 99%

Section: Radulescu Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%