Acronyms and Abbreviations
ALS
advanced life support
ARC
Ames Research Center
CELSS
controlled environment life support system
CTSD
Crew and Thermal Systems Division
ECLSS
environmental control and life support system
EMC
environmental monitoring and control
EMU
extravehicular mobility unit
EVA
extravehicular activity
FY
fiscal year
GSFC
Goddard Space Flight Center
HEDS
Human Exploration and Development of Space
HEPA
high efficiency particulate air
IR&D
independent research and development
ISS
International Space Station
JPL
Jet Propulsion Laboratory
JSC
Johnson Space Center
KSC
Kennedy Space Center
LEO
low Earth orbit
MSFC
Marshall Space Flight Center
NASA
National Aeronautics and Space Administration
NRA
NASA research announcement
NRC
National Research Council
NSCORT
NASA Specialized Center of Research and Training
OACT
Office of Advanced Concepts and Technology
OLMSA
Office of Life and Microgravity Sciences and Applications
OSAT
Office of Space Access and Technology
OSF
Office of Space Flight
OSSA
Office of Space Science and Applications
P/C
physical/chemical
PLSS
primary life support system
R&D
research and development
SAFER
Simplified Aid for EVA Rescue
SBIR
small business innovative research
SEI
Space Exploration Initiative
SHF
space human factors
SMAC
spacecraft maximum allowable concentration
SR&T
supporting research and technology
SSA
spacesuit assembly
VCD
vacuum compression distillation