Acronyms and Abbreviations
ADS
automatic dependent surveillance
ATC
air traffic control
ATIS
air terminal information system
ATM
air traffic management
ATREX
Air Turbo Rocket Expander Cycle
BWB
blended-wing body
CFD
computational fluid dynamics
CNS
communications/navigation/surveillance
CO
carbon monoxide
CO2
carbon dioxide
DOD
U.S. Department of Defense
FAA
Federal Aviation Administration
GPS
Global Positioning System
LACE
liquid air cycle engine
LEO
low-earth orbit
MEMS
microelectromechanical systems
NASA
National Aeronautics and Space Administration
NIH
National Institutes of Health
NOx
nitrous oxide
NRC
National Research Council
NSF
National Science Foundation
NSTC
National Science and Technology Council
ODW
oblique detonation wave
OSTP
Office of Science and Technology Policy
PDW
pulse detonation wave
R&D
research and development
RLV
reusable launch vehicle
SO2
sodium dioxide
TRL
technology readiness level
T/W
thrust-to-weight ratio
UAV
uninhabited air vehicle
V/STOL
vertical/short takeoff and landing
V&V
validation and verification