Lunar sourcebook—A user's guide to the moon

Collinson, D. W.

doi:10.1016/0031-9201(92)90060-9

Cited by 5 publications

(5 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the identity of the gases responsible for pore formation is not reported for certain, yet many researchers believe that they are a mixture of gases including H, H 2 O and He implanted by the solar wind. [3,34] To understand the interior structure of the agglutinate sample, 3D morphology reconstruction is carried out through Xray computed tomography (CT) characterizations. Slice images and 3D morphology of the agglutinate particle are shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…In the 2020s, nations and organizations all over the world have launched ambitious programs around lunar exploration including NASA's Artemis Plan [1] , ESA's "Moon Village" concept [2] , International Lunar Research Station (ILRS) program initiated by China National Space Administration (CNSA), and also the exploration plans declared by Japan, India, United Arab Emirates, and some companies. From the 1970s, all sorts of resources including crystalline rocks, metals, OH-/H, and many other elements have been discovered in the moon soil by previous probes [3] . As the basis for the construction of future lunar base, in-situ acquisition and utilization of resources from the lunar regolith are vital to deep-space exploration missions.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Transport of Volatiles in Agglutinates from Lunar Regolith of Chang’E-5 Mission

Zhang

et al. 2023

Preprint

View full text Add to dashboard Cite

Volatiles transport in the lunar regolith is essential for lunar soil evolution and in-situ resources utilization (ISRU) and has not been fully understood. Here, we characterize a typical agglutinate particle from Chang’E-5 samples and demonstrate the transport behavior of volatiles through the porous structure. The results of surface and 3D structural characterization indicate that the formation of the smooth porous structure is mainly caused by volatiles flow. Based on the element distribution analysis, we further speculate the main component of the volatiles is gas water attributed to the reduction of FeO by abundant hydrogen in the superficial lunar regolith during micrometeoroids impacts. Numerical models of volatiles (gas water) transport in the porous agglutinate have been developed for different pressure conditions. The results show the ultrafast transport of volatiles makes the superficial regolith dry and barren under high-vacuum condition. We conclude that rapid escape of volatiles can hardly retain water in the superficial lunar soil yet provides opportunities for development of ISRU technology.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Transport of Volatiles in Agglutinates from Lunar Regolith of Chang’E-5 Mission

Zhang

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…These impacts caused a fractionation of the bedrock of the lunar crust [28]. Very fine particles dominate, with more than 50% of the regolith consisting of particles with a size <100 micron [29]. A lack of erosion mechanisms such as flowing water or wind prevent the particles from rounding off, making them very sharp-edged.…”

Section: Natural Lunar Resourcesmentioning

confidence: 99%

Novel Approach for In-Situ Resource Utilization based Subtractive Manufacturing in Space

Seidel

Teicher

Ihlenfeldt

et al. 2023

Preprint

View full text Add to dashboard Cite

In recent years, space agencies like NASA and ESA have expanded their research activities in the field of Manufacturing in Space. These measures serve to reduce limitations and costs through fairing size, launch mass capabilities or logistic missions. The objective, in turn, is to develop technologies and processes that enable on-demand manufacturing for long-term space missions and on other celestial bodies. Within these research activities, in-situ resources utilization (ISRU) and recycling are major topics. Consequently, this paper considers what is required on-demand in future space missions and provides a corresponding overview of the in-space manufacturing state of the art. The latter is significantly influenced by research activities in the field of additive manufacturing, with only a few results available in the field of subtractive processing. In conclusion, a novel approach for in-situ resource utilization based subtractive manufacturing in space is presented to supplement the existing processes. The approach presented is based on a water abrasive jet process, with regolith simulate being used as the abrasive to separate metal and glass.

show abstract

“…These impacts caused a fractionation of the bedrock of the lunar crust [30]. Very fine particles dominate, with more than 50% of the regolith consisting of particles with a size of <100 microns [31]. A lack of erosion mechanisms, such as flowing water or wind, prevents the particles from rounding off, making them very sharp-edged.…”

Section: Natural Lunar Resourcesmentioning

confidence: 99%

Towards Lunar In-Situ Resource Utilization Based Subtractive Manufacturing

Seidel,

Teicher,

Ihlenfeldt

et al. 2023

Applied Sciences

View full text Add to dashboard Cite

In recent years, space agencies, such as the National Aeronautics and Space Administration (NASA) and European Space Agency (ESA), have expanded their research activities in the field of manufacturing in space. These measures serve to reduce limitations and costs through fairing size, launch mass capabilities or logistic missions. The objective, in turn, is to develop technologies and processes that enable on-demand manufacturing for long-term space missions and on other celestial bodies. Within these research activities, in-situ resource utilization (ISRU) and recycling are major topics to exploit local resources and save transport capacity and, therefore, costs. On the other hand, it is important to carefully consider which items can be brought and which must be manufactured on the Moon. Consequently, on-demand needs in future space missions are considered regarding frequency, raw material and required manufacturing processes according to investigations by ESA and NASA. In conclusion, manufacturing in space state-of-the-art shows a strong focus on additive processes, primarily considering semicrystalline or amorphous plastics. The subtractive processing of metallic or ceramic materials, in turn, currently represents a research gap. Consequently, an approach for in-situ resource utilization-based subtractive manufacturing in space is presented to supplement the existing processes. The latter uses a high-pressure jet of water, with regolith simulate as abrasive in suspension, being directed at the workpiece, which is moved to separate metal and glass. Proof-of-concept results are presented, including suitable process windows, achieved cutting geometries, as well as the effects of parameter variations on the system technology and consumables used. The focus of the investigations supplements the general requirements for the design of machine tools for space applications with inertial process-specific boundary conditions as a step towards higher technology maturity.

show abstract

Lunar sourcebook—A user's guide to the moon

Cited by 5 publications

References 72 publications

Transport of Volatiles in Agglutinates from Lunar Regolith of Chang’E-5 Mission

Transport of Volatiles in Agglutinates from Lunar Regolith of Chang’E-5 Mission

Novel Approach for In-Situ Resource Utilization based Subtractive Manufacturing in Space

Towards Lunar In-Situ Resource Utilization Based Subtractive Manufacturing

Contact Info

Product

Resources

About