D

Acronyms and Abbreviations

ACS

attitude control system

AFRL

Air Force Research Laboratory

AFSPC

Air Force Space Command

AG&C

adaptive guidance and control

ALREST

Advanced Liquid Rocket Engine Stability Technology

ALSB

Advanced Liquid Strap-on Booster

APU

Auxiliary Power Unit

CBC

common booster core

CBT

common bulkhead tanks

CCAFS

Cape Canaveral Air Force Station

CFD

computational fluid dynamics

CI

Continuous Improvement

COMSAT

communication satellite

CONOPS

concept of operations

DDT&E

design, development, test and evaluation

DOD

Department of Defense

ECP

Engineering Change Proposal

EELV

Evolved Expendable Launch Vehicle

EMA

electro-mechanical actuator

ERB

Engineering Review Board

FAA

Federal Aviation Administration

FAST

Future Responsive Access to Space Technologies

FY

fiscal year

GAO

Government Accountability Office



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OCR for page 92
D Acronyms and Abbreviations ACS attitude control system AFRL Air Force Research Laboratory AFSPC Air Force Space Command AG&C adaptive guidance and control ALREST Advanced Liquid Rocket Engine Stability Technology ALSB Advanced Liquid Strap-on Booster APU Auxiliary Power Unit CBC common booster core CBT common bulkhead tanks CCAFS Cape Canaveral Air Force Station CFD computational fluid dynamics CI Continuous Improvement COMSAT communication satellite CONOPS concept of operations DDT&E design, development, test and evaluation DOD Department of Defense ECP Engineering Change Proposal EELV Evolved Expendable Launch Vehicle EMA electro-mechanical actuator ERB Engineering Review Board FAA Federal Aviation Administration FAST Future Responsive Access to Space Technologies FY fiscal year GAO Government Accountability Office 92

OCR for page 92
APPENDIX D 93 GEO geosynchronous Earth orbit GG gas generator GSE ground support equipment GTO geosynchronous transfer orbit HChydrocarbon HCB hydrocarbon boost HEO high Earth orbit IHPRPT Integrated High Performance Rocket Propulsion Technology IOC initial operating capability IOC initial operational capability IPA independent program assessment IPD Integrated Powerhead Demonstration Isp specific impulse ISS International Space Station IVHM integrated vehicle health management LCH4 liquid methane LCC life cycle cost LEO low Earth orbit LES large expendable stage LH2 liquid hydrogen LO2 liquid oxygen MCC main combustion chamber MEO medium Earth orbit MLP mobile launch platform MPS main propulsion system MR mixture ratio MSFC Marshall Space Flight Center (NASA) MST mobile service tower NAFCOM NASA/Air Force Cost Model NASA National Aeronautics and Space Administration NASP National AeroSpace Plane NPOESS National Polar-Orbiting Operational Environmental Satellite System NRC National Research Council ORSC oxygen rich, staged combustion PWR Pratt and Whitney Rocketdyne R&D research and development RBD reusable booster demonstrator RBS reusable booster system RECO rocket engine cut-off RLC recurring launch cost RLV reusable launch vehicle RP rocket propellant

OCR for page 92
94 REUSABLE BOOSTER SYSTEM--REVIEW AND ASSESSMENT RTLS return to launch site S&T science and technology SES small expendable stage SLS Space Launch System SMC Space and Missile Systems Center SRB solid rocket booster SSME space shuttle main engine SSO Sun-synchronous orbit SSTO single stage to orbit TPA turbopump assembly TPS thermal protection system TRL technology readiness level TSTO two stages to orbit TVC thrust vector control VAFB Vandenberg Air Force Base VIF vertical integration facility VTHL vertical takeoff, horizontal landing WDR wet dress rehearsal