Browsing by Author "Funk, Andrew"
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Item Establishing a Standardized Test Method for Evaluating the Cut Resistance of Space Suit Glove Fabrics(2024 International Conference on Environmnetal Systems, 2024-07-21) Jones, Robert J.; Abney,Morgan B.; Brady, Tim; Morris, Danielle; Rhodes, Richard; McFarland, Shane; Cox, Andrew; Funk, Andrew; Settles, JoeThe Artemis space suit glove environmental protection garment (EPG) will be the first line of protection used to shield the crewmember�s hands from the environments encountered during extravehicular activity (EVA). As the Artemis missions will include more extreme environments than those experienced on the International Space Station, development, verification, and validation of gloves poses three key challenges. First, there are no standardized tests defined to evaluate the durability of space suit gloves for the extreme lunar environments, particularly against the continual threat of inadvertently cutting the fabric of the glove. Second, there is insufficient data on state-of-the-art glove cut performance at lunar temperatures from which to compare new designs. Third, current ISS glove Thermal Micrometeoroid Garment (TMG) fabrics are unlikely to be sufficient to meet Lunar requirements. It is therefore necessary to define tests to evaluate if glove fabrics can meet new, challenging cut requirements. This paper focuses on the development of a test procedure to characterize the cut resistance of lunar EVA glove fabrics at cryogenic temperatures using a modified ASTM standardized test method. The results of testing on Phase VI glove fabrics are presented.Item Establishing Standardized Test Methods for Evaluating Space Suit Gloves(2023 International Conference on Environmental Systems, 2023-07-16) Jones, Robert; Abney, Morgan; Brady, Timothy; Rhodes, Richard; McFarland, Shane; Settles. Joe; Stephens, Chanel; Hoyle, Andrew; Funk, Andrew; Rodgers, Stephanie,The Artemis space suit glove environmental protection garment (EPG) will be the first line of protection used to shield the crewmember’s hands from the environments encountered during extravehicular activity (EVA). As the Artemis missions will include more extreme environments than those experienced on the International Space Station, development, verification, and validation of gloves poses three key challenges. First, there are no standardized tests defined to evaluate the durability of space suit gloves for the extreme lunar environments, particularly the permanently shadowed regions. Second, there is insufficient data on state-of-the-art glove performance in a lunar environment from which to compare new designs. Third, current ISS glove Thermal Micrometeoroid Garment (TMG) fabrics are unlikely to be sufficient to meet Lunar requirements. It is therefore necessary to define tests to evaluate if gloves can meet new, challenging requirements. This paper focuses on the development of a test procedure to characterize lunar EVA glove fabrics using ASTM standardized test methods and the design and validation of a new standardized test procedure for comparing abrasion resistance between fabrics in lunar-like conditions. The results of testing on twelve candidate EVA glove fabrics are presented.Item Validation Testing and Statistical Analysis of the Rotary Tumbler Fabric Abrasion Method(2024 International Conference on Environmnetal Systems, 2024-07-21) Jones, Robert J.; Abney,Morgan B.; Brady, Tim; Morris, Danielle; Wilson,Sara; Rhodes, Richard; McFarland, Shane; Funk, Andrew; Deaton, Anthoney ShawnThe Artemis space suit glove environmental protection garment (EPG) will be the first line of protection used to shield the crewmember�s hands from the environments encountered during extravehicular activity (EVA). As the Artemis missions will include more extreme environments than those experienced on the International Space Station, development, verification, and validation of gloves requires the development of new test methods. A previous paper focused on the development of a test procedure to characterize lunar EVA glove fabrics using ASTM standardized test methods and the design and validation of a new standardized test procedure for comparing abrasion resistance between fabrics using a dust and rock filled rotary tumbler. Preliminary results of testing were presented in the last paper. This paper reports on the validation testing and statistical analysis of the newly developed tumbler abrasion test method.