Building components for an outpost on the Lunar soil by means of a novel 3D printing technology

Abstract 3D-printing technologies are receiving an always increasing attention in architecture, due to their potential use for direct construction of buildings and other complex structures, also of considerable dimensions, with virtually any shape. Some of these technologies rely on an agglomeration process of inert materials, e.g. sand, through a special binding liquid and this capability is of interest for the space community for its potential application to space exploration. In fact, it opens the possibility for exploiting in-situ resources for the construction of buildings in harsh spatial environments. The paper presents the results of a study aimed at assessing the concept of 3D printing technology for building habitats on the Moon using lunar soil, also called regolith. A particular patented 3D-printing technology – D-shape – has been applied, which is, among the existing rapid prototyping systems, the closest to achieving full scale construction of buildings and the physical and chemical characteristics of lunar regolith and terrestrial regolith simulants have been assessed with respect to the working principles of such technology. A novel lunar regolith simulant has also been developed, which almost exactly reproduces the characteristics of the JSC-1A simulant produced in the US. Moreover, tests in air and in vacuum have been performed to demonstrate the occurrence of the reticulation reaction with the regolith simulant. The vacuum tests also showed that evaporation or freezing of the binding liquid can be prevented through a proper injection method. The general requirements of a Moon outpost have been specified, and a preliminary design of the habitat has been developed. Based on such design, a section of the outpost wall has been selected and manufactured at full scale using the D-shape printer and regolith simulant. Test pieces have also been manufactured and their mechanical properties have been assessed.

[1]  Larry Bell,et al.  Top-Level Considerations for Planning Lunar/Planetary Habitat Structures , 2011 .

[2]  Roger V. Bostelman,et al.  Self-contained automated construction deposition system , 2004 .

[3]  A. Gibb,et al.  Freeform Construction: Mega-scale Rapid Manufacturing for construction , 2007 .

[4]  Richard Szabo,et al.  Human habitation field study of the Habitat Demonstration Unit (HDU) , 2013 .

[5]  Alistair G.F. Gibb,et al.  Design, data and process issues for mega-scale rapid manufacturing machines used for construction , 2008 .

[6]  Joseph Pegna,et al.  Exploratory investigation of solid freeform construction , 1997 .

[7]  Pio G. Iovenitti,et al.  Part Build Orientations Based on Volumetric Error in Fused Deposition Modelling , 2000 .

[8]  Duc Truong Pham,et al.  Rapid Manufacturing: The Technologies and Applications of Rapid Prototyping and Rapid Tooling , 2001 .

[9]  Albert Perry Brigham,et al.  Rocks, Rock-Weathering and Soils , 1897 .

[10]  K. R. Sridhara Murthi,et al.  Strategic, technological and ethical aspects of establishing colonies on Moon and Mars , 2008 .

[11]  Michael J Thali,et al.  Getting in touch--3D printing in forensic imaging. , 2011, Forensic science international.

[12]  Pietro Salvo,et al.  A 3D printed dry electrode for ECG/EEG recording , 2012 .

[13]  Gordon R. Woodcock.  Re-Thinking Human Space Exploration , 2009 .

[14]  Neil Hopkinson,et al.  Emerging Rapid Manufacturing Processes , 2006 .

[15]  Brent Sherwood.  Decadal opportunities for space architects , 2012 .

[16]  Beat Hammer,et al.  Manufacturing splints for orthognathic surgery using a three-dimensional printer. , 2008, Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics.

[17]  Valentina Colla,et al.  3D printing technology for a moon outpost exploiting lunar soil , 2010 .

[18]  M. Ashby,et al.  Cellular solids: Structure & properties , 1988 .

[19]  Dirk Schulze-Makuch,et al.  Optimizing Space Exploration , 2008 .

[20]  Roger V. Bostelman,et al.  Adapting a teleoperated device for autonomous control using three-dimensional positioning sensors: experiences with the NIST RoboCrane ☆ , 2004 .

[21]  Behrokh Khoshnevis,et al.  Lunar Contour Crafting: A Novel Technique for ISRU-Based Habitat Development , 2005 .

[22]  Anita Mehta,et al.  The dynamics of sand , 1994 .