Terms, Acronyms, and Abbreviations
AFB
Air Force Base
AIAA
American Institute of Aeronautics and Astronautics
ASRM
Advanced Solid Rocket Motor
ATP
Alternate Turbopump Development Program
C3
command, communications, and control
DC-X
one-third scale model of the DC-Y
DC-Y
McDonnell Douglas Delta Clipper
DoD
Department of Defense
ELV
expendable launch vehicle
ESA
European Space Agency
F-1
U.S. liquid-oxygen/hydrocarbon engine used on the Saturn V launch vehicle during the Apollo program
F-1A
upgraded F-1 engine
GEO
Geosynchronous Earth orbit
GN&C
guidance, navigation, and control
HTPB
hydroxyl-terminated polybutadiene, a solid rocket propellant binder
in
inches
Isp
specific impulse, in seconds
ITL
integration, transfer, and launch
J-2
upper stage U.S. liquid-oxygen/liquid-hydrogen engine used on the Saturn Launch vehicle during the Apollo Program
lb
pound
LEO
Low-Earth orbit
LCC
Launch Control Center
NASA
National Aeronautics and Space Administration
NASP
National Aero-Space Plane
NLS
National Launch System
NLS-1
135,000-pound payload class launch vehicle
NLS-2
50,000-pound payload class launch vehicle
NLS-3
20,000-pound payload class launch vehicle
n. mi
nautical miles
NRC
National Research Council
Pc
chamber pressure
PBAN
polybutadiene-acrylic acid-acrylonitrile, a solid rock propellant binder
psia
pounds per square inch absolute
RD-170
Soviet liquid-oxygen/hydrocarbon engine
RSRM
Redesigned Solid Rocket Motor
s
seconds
SDIO
Strategic Defense Initiative Office
SEI
Space Exploration Initiative
SL
sea level
SSF
Space Station Freedom
SRM
Solid Rocket Motor
SSME
Space Shuttle Main Engine
SSRT
Single-Stage Rocket Technology Program
SSTO
Single-stage-to-orbit
STME
Space Transportation Main Engine
vac
engine performance in space vacuum
X-30
Experimental NASP vehicle