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



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OCR for page 9
From Earth to Orbit: An Assessment of Transportation Options 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

OCR for page 9
From Earth to Orbit: An Assessment of Transportation Options 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