Glossary

For those of us who can never remember what one of those acronyms mean.

ACS – Attitude Control System

ADS – Auto Destruct System

AIAA – American Institute of Aeronautics and Astronautics

ASI – Italian Space Agency

ASRM – Advanced Solid Rocket Motor

ATV – Automated Transfer Vehicle

BECO – Booster Engine Cut Off

CAIB – Columbia Accident Investigation Board

CEV – Crew Exploration Vehicle

CG – Center of Gravity

COTS – Commercial Orbital Transportation Services

COTS – Commercial Off The Shelf

CSA – Canadian Space Agency

CxP – Constellation Program

DARPA – Defense Advanced Research Projects Agency

DCM – Docking Cargo Module (Russian Segment)

DEL – Deorbit, Entry, and Landing

DoD – Department of Defense

DSN – Deep Space Network

EAFB – Edwards Air Force Base, Calif.

ECLSS – Environmental Control and Life Support System

EDL – Entry Descent & Landing

EELV – Evolved Expendable Launch Vehicle

ELV – Expendable Launch Vehicle

EML – Earth Moon Lagrange point

EOI – Earth Orbit Insertion

EOR – Earth Orbit Rendezvous

ESA – European Space Agency

ESAS – Exploration Systems Architecture Study

ET – External Tank (Space Shuttle)

EVA – Extra-Vehicular Activity

FGB – Functional Cargo Block (Russian acronym). Zarya module.

GAO – Government Accountability Office

GEM – Graphite-Epoxy Motor

GEO – Geostationary Earth Orbit

GLOW – Gross Lift Off Weight

GPS – Global Positioning System

GSFC – Goddard Space Flight Center

HAB – Habitat Module

HEO – High Earth Orbit

HLR – Human Lunar Return

HSF – Human Space Flight

HSG – Houston Support Group

HST – Hubble Space Telescope

IAA – International Academy of Astronautics

ICBM – InterContinental Ballistic Missile

IMLEO – Initial Mass in Low Earth Orbit

ISP – Initial Specific Impulse

SRU – In Situ Resource Utilization

IOC – Initial Operational Capability

ISS – International Space Station

ITAR – International Traffic in Arms Regulations

IUS – Inertial Upper Stage, earlier Interim Upper Stage

JEM – Japanese Module

JLP – JEM Logistics Platform

JPL – Jet Propulsion Laboratory

JSC – Johnson Space Center, Houston Texas

JUS – Jupiter Upper Stage

JWST – James Webb Space Telescope

LAS – Launch Abort System

LEO – Low Earth Orbit

LH2 – Liquid Hydrogen

LIDS – Low Impact Docking System

LOC – Loss of Crew

LOI – Lunar Orbit Injection

LOM – Loss Of Mission

LOR – Lunar Orbit Rendezvous

LOS – Loss Of Signal

LOV – Loss of vehicle

LOX – Liquid Oxygen

LRB – Liquid Rocket Booster – (shuttle external fuel tank)

LRL – Apollo Lunar Receiving Laboratory

LRV – Apollo Lunar Rover Vehicle

LRO – Lunar Reconnaissance Orbiter

LROC – Lunar Reconnaissance Orbiter Camera

LSAM – Lunar Surface Access Module

LV – Launch Vehicle

MAF – Michoud Assembly Facility

Max Q – Maximum Dynamic Pressure, the maximum aerodynamic stress on a spacecraft in atmospheric flight

MECO – Main Engine Cut Off

MES – Main Engine Start

MMU – Manned Maneuvering Unit

MSFC – Marshall Space Flight Center

MSL – Mars Science Laboratory

MTV – Mars Transfer Vehicle

NASA – National Space and Aeronautics Administration

NEO – Near Earth Object

NAC – Narrow Angle Camera (LROC)

NIH – Not Invented Here

NOAA – National Oceanographic and Atmospheric Administration

OAA – Orbiter Access Arm

ODS – Orbiter Docking System

OEV – Orion Exploration Vehicle

OMS – Orbital Maneuvering System

OSC – Orbital Sciences Corporation

OSP – Orbital Space Plane

OSTP – Office of Science and Technology Policy

PDR – Preliminary Design Review

POTUS – President of the United States

PSI – Pounds per Square Inch

PV – Photovoltaic

PVR – Photo Voltaic Radiator

PWR – Pratt & Whitney Rocketdyne

RCS – Reaction Control System

RDS – Russian Docking System

RF – Radio Frequency

RFI – Request for Information

RFP – Request for Proposal

RLV – Reusable Launch Vehicle

RMS – Remote Manipulator System (shuttle robotic arm)

RSC-E – Rocket & Space Corporation Energia

RSO – Range Safety Officer

RSRB – Recoverable Solid Rocket Booster

RSRM – Reusable Solid Rocket Motor

SDLV – Shuttle Derived Launch Vehicle

SECO – Second stage Engine Cut Off

SEL – Sun Earth Lagrange point

SESE – School of Earth and Space Exploration at ASU

SJL – Sun Jupiter Lagrange point

SOFI – Spray On Foam Insulation

SRB – Solid Rocket Booster

SSC – Stennis Space Center

SSME – Space Shuttle Main Engine

SSSRB – Space Shuttle Solid Rocket Booster

SSRMS – Space Station Remote Manipulator System

SSTO – Single Stage To Orbit

STS – Space Transportation System (Space Shuttle)

TDRS – Tracking and Data Relay Satellite

TLI – Trans Lunar Insertion

TSTO – Two Stage To Orbit

UAV – Unmanned Aerial Vehicle

UDMH – Unsymmetrical DiMethyl Hydrazine

UHF – Ultra High Frequency (300 MHz to 3 GHz)

ULA – United Launch Alliance

UPS – Uninterruptible Power Supply

US – Upper Stage

USA – United Space Alliance

UTC – Universal Time Clock, all time zones are measured relative to UTC. Also known as GMT and ZULU

VAB – Vehicle Assembly Building

VAFB – Vandenberg Air Force Base, Calif.

VSE – Vision for Space Exploration

WAC – Wide Angle Camera (LROC)

WBC – Wide Body Centaur

WMAP – Wilkinson Microwave Anisotropy Probe

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