Acronyms


APU

auxiliary power unit

ASRM

advanced solid rocket motor


CLCS

checkout launch and control system

COTS

commercial off-the-shelf


DSS

Decision Support System

DoD

U.S. Department of Defense


FES

flash evaporator system

FY

fiscal year


HEDS

Human Exploration and Development of Space


IUS

inertial upper stage

ISS

International Space Station


JSC

Johnson Space Center


KSC

Kennedy Space Center


LFBB

liquid fly-back booster



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--> Acronyms APU auxiliary power unit ASRM advanced solid rocket motor CLCS checkout launch and control system COTS commercial off-the-shelf DSS Decision Support System DoD U.S. Department of Defense FES flash evaporator system FY fiscal year HEDS Human Exploration and Development of Space IUS inertial upper stage ISS International Space Station JSC Johnson Space Center KSC Kennedy Space Center LFBB liquid fly-back booster

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--> MSFC Marshall Space Flight Center NASA National Aeronautics and Space Administration NPD NASA Policy Directive NRC National Research Council NSPD National Space Policy Directive OMS orbital maneuvering system PAM payload assist module PEM proton exchange membrane QRAS quantitative risk assessment system R&D research and development RCS reaction control system RLV reusable launch vehicle RSRB reusable solid rocket booster S&PU safety and performance upgrades SFOC space flight operations contract SSME space shuttle main engine SSUPRCB Space Shuttle Upgrades Program Requirements Control Board USA United Space Alliance corporation USNRC U.S. Nuclear Regulatory Commission WME water membrane evaporator