High-Pressure Oxygen Generation for Outpost EVA StudyThe amount of oxygen consumption for crew extravehicular activity (EVA) in future lunar exploration missions will be significant. Eight technologies to provide high pressure EVA O2 were investigated. They are: high pressure O2 storage, liquid oxygen (LOX) storage followed by vaporization, scavenging LOX from Lander followed by vaporization, LOX delivery followed by sorption compression, water electrolysis followed by compression, stand-alone high pressure water electrolyzer, Environmental Control and Life Support System (ECLSS) and Power Elements sharing a high pressure water electrolyzer, and ECLSS and In-Situ Resource Utilization (ISRU) Elements sharing a high pressure electrolyzer. A trade analysis was conducted comparing launch mass and equivalent system mass (ESM) of the eight technologies in open and closed ECLSS architectures. Technologies considered appropriate for the two architectures were selected and suggested for development.
Document ID
20090014078
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Jeng, Frank F. (Barrios Technology, Inc. Houston, TX, United States)
Conger, Bruce (Hamilton Sundstrand Corp. Houston, TX, United States)
Ewert, Michael K. (NASA Johnson Space Center Houston, TX, United States)
Anderson, Molly S. (NASA Johnson Space Center Houston, TX, United States)
Date Acquired
August 24, 2013
Publication Date
January 1, 2009
Subject Category
Man/System Technology And Life Support
Report/Patent Number
09ICES-0078JSC-18044
Meeting Information
Meeting: International Conference on Environmental Systems