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Mitigation of EMU cut glove hazard from micrometeoroid and orbital debris impacts on ISS handrails

conference contribution
posted on 2009-12-01, 00:00 authored by S Ryan, E L Christiansen, B A Davis, E Ordoñez
Recent cut damages sustained on crewmember gloves during extravehicular activity (ISS) onboard the International Space Station (ISS) have been caused by contact with sharp edges or a pinch point according to analysis of the damages. One potential source are protruding sharp edged crater lips from micrometeoroid and orbital debris (MMOD) impacts on metallic handrails along EVA translation paths. A number of hypervelocity impact tests were performed on ISS handrails, and found that mm-sized projectiles were capable of inducing crater lip heights two orders of magnitude above the minimum value for glove abrasion concerns. Two techniques were evaluated for mitigating the cut glove hazard of MMOD impacts on ISS handrails: flexible overwraps which act to limit contact between crewmember gloves and impact sites, and; alternate materials which form less hazardous impact crater profiles. In parallel with redesign efforts to increase the cut resilience of EMU gloves, the modifications to ISS handrails evaluated in this study provide the means to significantly reduce cut glove risk from MMOD impact craters.

History

Volume

672 SP

ISSN

0379-6566

ISBN-13

9789292212360

Publication classification

EN.1 Other conference paper

Title of proceedings

European Space Agency, (Special Publication) ESA SP

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