Space Suit Portable Life Support System 2.0 Unmanned Vacuum Environment Testing




Anchondo, Ian
Cox, Marlon
Meginnis, Carly
Westheimer, David
Vogel, Matthew

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47th International Conference on Environmental Systems


For the first time in more than 30 years, an advanced space suit Portable Life Support System (PLSS) design was operated inside a vacuum chamber representative of the flight operating environment. The test article, PLSS 2.0, was the second system-level integrated prototype of the advanced PLSS design, featuring first generation or later prototypes for all components less instrumentation, tubing and fittings. Developed throughout 2012, PLSS 2.0 was the first attempt to package the system into a flight-like representative volume. PLSS 2.0 testing included an extensive functional evaluation called Pre-Installation Acceptance (PIA) testing, Human-in-the-Loop testing in which the PLSS 2.0 prototype was integrated via umbilicals to a manned space suit for 19 two-hour simulated EVAs, and unmanned vacuum environment testing. The latter test sequence took place from 1/9/15-7/9/15 with PLSS 2.0 located inside a vacuum chamber. Test sequences included performance mapping of several components, carbon dioxide removal evaluations at simulated intravehicular activity (IVA) conditions, a regulator pressure schedule assessment, and culminated with 25 simulated extravehicular activities (EVAs). During the unmanned vacuum environment test series, PLSS 2.0 accumulated 378 hours of integrated testing including 291 hours of operation in a vacuum environment and 199 hours of simulated EVA time. In addition to generating an extensive database of PLSS 2.0 performance data, achievements included requirements and operational concepts verification, as well as demonstration of vehicular interfaces, consumables sizing and recharge, and water quality control.


Ian Anchondo, , NASA Johnson Space Center (JSC), USA
Marlon Cox, NASA Johnson Space Center, USA
Carly Meginnis, NASA Johnson Space Center, USA
David Westheimer, National Aeronautics and Space Administration (NASA), USA
Matthew Vogel, HX5, USA
ICES402: Extravehicular Activity: PLSS Systems
The 47th International Conference on Environmental Systems was held in South Carolina, USA on 16 July 2017 through 20 July 2017


EVA, PLSS, technology development, PLSS 2.0