Browsing by Author "Jones, Robert J."
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Item Enhancements to the ISS Phase VI Glove Design(44th International Conference on Environmental Systems, 2014-07-13) Jones, Robert J.; Linsner, Alex; Wyatt, Steve; Scheir, Craig; Muller, Greg; Sung, Joey; Hewes, Linda; Graziosi, DavidThis paper describes several technology advancements ILC Dover is developing to improve the current ISS EVA Phase VI glove design. As future missions require better mobility, material enhancements, and new technologies, glove design must be iterated to stay ahead of the curve. Over the span of several enhancement projects focused on improving the form, fit, and function of the Phase VI design, ILC has investigated state of the art technologies, explored new manufacturing techniques and built prototypes for the purpose of testing these new concepts. Building upon the heritage of the legacy Phase VI glove design, mobility improvements have been made in the following areas: metacarpophalangeal joint, carpometacarpo-phalangeal joint, segmentation of TMG palm pads, construction of TMG finger seams, palm pads, molded palm and TMG insulation and the development of a new light weight wrist restraint. Recently, MMOD impacts on the ISS have called for improvements to enhance the cut protection of the TMG portion of the glove. Enhancements in cut protection include: eliminating hard backing with the incorporation of soft keyhole brackets, a revision to the TMG Vectran Turtleskin®, and evaluating the addition of Vectran Turtleskin and RTV in the breakline of the TMG palm. Other improvements include a review of the heater system and recommendation for improving the overall thermal comfort of the hand, a palmbar adjustment mechanism that allows resizing of the glove restraint while pressurized and utilizing laser scanning for assessing the pressurized shape of the glove. Preliminary torque, range of motion and cycle testing has shown promise in these improvements. Further work will need to be conducted in order to iterate these concepts and combine them into the next generation EVA glove.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 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.