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dc.creatorBartlett, Harrison
dc.creatorBowser, Joseph
dc.creatorHierro, Carlos Callejon
dc.creatorGarner, Sarah
dc.creatorGuloy, Lawrence
dc.creatorHnatov, Christina
dc.creatorKalman, Jonathan
dc.creatorSosis, Baram
dc.creatorAkin, David
dc.date.accessioned2017-07-07T22:41:17Z
dc.date.available2017-07-07T22:41:17Z
dc.date.issued2017-07-16
dc.identifier.otherICES_2017_287
dc.identifier.urihttp://hdl.handle.net/2346/73066
dc.descriptionHarrison Bartlett, University of Maryland, USA
dc.descriptionJoseph Bowser, University of Maryland, USA
dc.descriptionCarlos Callejon Hierro, University of Maryland, USA
dc.descriptionSarah Garner, University of Maryland, USA
dc.descriptionLawrence Guloy, University of Maryland, USA
dc.descriptionChristina Hnatov, University of Maryland, USA
dc.descriptionJonathan Kalman, University of Maryland, USA
dc.descriptionBaram Sosis, University of Maryland, USA
dc.descriptionDavid Akin, University of Maryland, USA
dc.descriptionICES400: Extravehicular Activity: Space Suits
dc.descriptionThe 47th International Conference on Environmental Systems was held in South Carolina, USA on 16 July 2017 through 20 July 2017.
dc.description.abstractHuman Mars exploration will result in a demand for extravehicular activity one or two orders of magnitude beyond prior peak rates, occurring at the end of a 26-month logistics cycle. The extensive fabric “soft goods” of conventional spacesuits are subject to wear and abrasion, tend to carry dust back into the crew habitats, and replacement parts must be transported from Earth and stocked for use on need. This paper reports on the first year of an ongoing project at the University of Maryland (UMd) examining the technology of “hard suits”, in combination with recent advancements in additive manufacturing, to examine the potential for the use of hard suits in Mars exploration with on-site fabrication of replacement parts, or even entire pressure garments on need. The current focus has been on materials testing, fabrication techniques, and testing methodologies. Starting with a baseline suit kinematic configuration mirroring that of the NASA Ames AX-5 suit, the primary functional allocations of the suit elements were focused down to structural elements, bearings, and seals. Materials samples were tested to quantify design parameters for differing materials, fabrication methods, and even variations between individual machines. Bearings were fabricated with all parts or with post-fabrication insertion of steel or ceramic balls, and tested for joint torques under load and for failure loads. Seals were fabricated of elastomeric materials and tested for sealing performance and friction. Based on test results, the top candidate elements were incorporated into a prototype pressurized arm segment compatible with the UMd glove box, which was used for testing of the prototype arm segment at both 8.3 and 4.3 psid. Testing consisted of direct measurement of required movement torques through the use of a robotic arm simulator, as well as human factors testing with comparison to a standard EMU arm segment.
dc.format.mimetypeapplication/pdf
dc.publisher47th International Conference on Environmental Systems
dc.subjectEVA
dc.subjectspacesuits
dc.subjectadditive manufacturing
dc.subjecthuman exploration
dc.titleIn-Situ Fabricated Space Suits for Extended Exploration and Settlementen_US
dc.typePresentations


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