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D Acronyms AFC alkaline fuel cell AMTEC alkali metal thermal-to-electric conversion BASE beta-alumina solid electrolyte CELSS closed ecological life support system CFD computational fluid dynamics CHF critical heat flux (the limit of nucleate boiling heat transfer) CHX condensing heat exchanger CMC ceramic matrix composite CMGR Committee on Microgravity Research CPL capillary pumped loop DIP dynamic isotope power DMD direct metal deposition DNS direct numerical simulation DOD Department of Defense DOE Department of Energy DWO density-wave oscillation EVA extravehicular activity EW equivalent weight FIV flow-induced vibration FVS free vortex separator GCNR gas-core nuclear rocket GCR galactic cosmic radiation GRC Glenn Research Center, NASA (formerly Lewis Research Center) 199

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200 HEDS HZE ISRU ISS JPL JSC Human Exploration and Development of Space, a NASA enterprise high atomic number and energy in situ resource utilization International Space Station Jet Propulsion Laboratory, jointly operated by NASA and the California Institute of Technology Johnson Space Center, NASA LES LHP LHTES LHV LPS large eddy simulation loop heat pipe latent heat thermal energy storage lower heating value liquid-phase sintering M-C MCFC MMC MRD MSAD NASA NASDA NEA NEP NERVA NRA NRC NTR PAFC PCM PEMFC PMC PRA PV R&D RF RFMD RTG RWGS SAND SBR SFWE SLS SOFC APPENDIX D Mohr-Coulomb molten carbonate fuel cell metal matrix composite Microgravity Research Division Microgravity Science and Applications Division National Aeronautics and Space Administration National Space Development Agency (Japan) near-Earth asteroid nuclear electric propulsion nuclear engine for rocket vehicle application NASA Research Announcement National Research Council nuclear thermal rocket phosphoric acid fuel cell phase-change material proton-exchange membrane fuel cell polymer matrix composite probabilistic risk assessment photovoltaic research and development radio frequency rotary fluid management device radioisotope thermoelectric generator reverse water gas shift solid amine-water desorption soil-bed reactor static feed water electrolysis selective laser sintering solid oxide fuel cell

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APPENDIX D SPFC SPWE SWV TE TI TIMES TPV TRL UV solid polymer fuel cells solid polymer water electrolysis solar wind volatile thermoelectric thermionic thermoelectric integrated membran thermophotovoltaic technical readiness level ultraviolet VAPCAR vapor-phase catalytic ammonia removal VCD vapor-compression distillation VHT vertical handgun tool VOF volume of fluid VPL vapor-pressure pumped loop 201 e evaporator

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