A new planetary structure fabrication process using phosphoric acid

Buchner, Christoph; Pawelke, Roland Hermann; Schlauf, Thomas; Reissner, Alexander; Makaya, Advenit

doi:10.1016/j.actaastro.2017.11.045

Cited by 43 publications

(8 citation statements)

References 19 publications

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“…Although the processing of the material will take considerable amounts of energy, its use will be a relatively low energy process as opposed to a thermal extrusion process, which would likely require high energy storage. A different binder method was explored by Buchner et al, 24 which uses phosphoric acid as the binder. Although it would have to be transported to the extraterrestrial body, the rest of the regolith would require minimal processing.…”

Section: Existing Approaches For Concrete Am Systemsmentioning

confidence: 99%

Design and System Considerations for Construction-Scale Concrete Additive Manufacturing in Remote Environments via Robotic Arm Deposition

Meisel

Watson

Bilén

et al. 2022

3D Printing and Additive Manufacturing

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This work explores additive manufacturing (AM) of concrete by using a six-axis robotic arm and its use in large-scale, autonomous concrete construction. Concrete AM uses an extrusion method to deposit concrete beads in layers to create a three-dimensional (3D) shape. This method has been found to have many uses and advantages in construction applications. The lack of formwork and autonomous nature of this manufacturing method allows for new geometries and materials to be printed in unsafe or challenging environments. Autonomous construction has been suggested as a method of creating habitats in rapid-response scenarios. This article discusses research toward one such system that could be used to rapidly construct necessary habitats in response to low-resource and emergency situations. This required addressing certain limitations of a six-axis robotic arm platform along with overcoming system challenges to achieve deliverables for NASA's ''3D Printed Habitat Challenge.'' This included system design to increase the build volume, integrate embedding, print non-coplanar sections, and minimize travel moves to address the challenges associated with continuous extrusion of cementitious material. The system was demonstrated by printing a one-third scale habitat, which represents the first 3d-printed fully enclosed structure at an architectural scale without the use of support.

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Section: Existing Approaches For Concrete Am Systemsmentioning

confidence: 99%

Design and System Considerations for Construction-Scale Concrete Additive Manufacturing in Remote Environments via Robotic Arm Deposition

Meisel

Watson

Bilén

et al. 2022

3D Printing and Additive Manufacturing

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“…The variability of in-situ resource availability profiles on different planetary bodies may require different approaches to ISRU. Here we identify the resources available on Luna and Mars, the most relevant mission destinations in the near future [2].…”

Section: In-situ Resource Availabilitymentioning

confidence: 99%

“…Eliminating a crew's reliance on supply chains from Earth for critical supplies is essential to ensuring the feasibility of long-duration or permanent settlements on the Moon (Luna) and Mars [1][2][3][4][5]. This paper explores the potential for emerging power-to-X technologies to enable material self-sufficiency in extra-planetary settlements.…”

Section: Introduction 11 Overviewmentioning

confidence: 99%

Imagining sustainable human ecosystems with power-to-x in-situ resource utilisation technology

2022

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“…Regolith is abundant on the surface of the Moon and it may serve as the main material for protecting habitats from the space environment [16]. When processed, i.e., molten, sintered, mixed with binders, loose regolith can become a useful solid material [7,17,18]. This concept relies of the development of ISRU technologies.…”

Section: Passive Shieldingmentioning

confidence: 99%

Utilisation of Moon Regolith for Radiation Protection and Thermal Insulation in Permanent Lunar Habitats

Akisheva

Gourinat

2021

Applied Sciences

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In the context of a sustainable long-term human presence on the Moon, solutions for habitat radiation and thermal protection with regolith are investigated. Regolith compression is studied to choose the optimal density-thickness combination in terms of radiation shielding and thermal insulation. The applied strategy is to protect the whole habitat from the hazards of galactic cosmic rays and design a dedicated shelter area for protection during solar particle events, which eventually may be a lava tube. Simulations using NASA’s OLTARIS tool show that the effective dose equivalent decreases significantly when a multilayer structure mainly constituted of regolith and other available materials is used instead of pure regolith. The computerised anatomical female model is considered here because future missions will be mixed crews, and, generally, more sex-specific data are required in the field of radiation protection and human spaceflight. This study shows that if reasonably achievable radioprotection conditions are met, mixed crews can stay safely on the lunar surface. Compressed regolith demonstrates a significant efficiency in thermal insulation, requiring little energy management to keep a comfortable temperature inside the habitat. For a more complete picture of the outpost, the radiation protection of lunar rovers and extravehicular mobility units is considered.

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A new planetary structure fabrication process using phosphoric acid

Cited by 43 publications

References 19 publications

Design and System Considerations for Construction-Scale Concrete Additive Manufacturing in Remote Environments via Robotic Arm Deposition

Design and System Considerations for Construction-Scale Concrete Additive Manufacturing in Remote Environments via Robotic Arm Deposition

Imagining sustainable human ecosystems with power-to-x in-situ resource utilisation technology

Utilisation of Moon Regolith for Radiation Protection and Thermal Insulation in Permanent Lunar Habitats

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