A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
AA Antenna Assembly
AAA Avionics Air Assembly
AAEF Aquatic Animal Experiment Facility
ABC Audio Bus Coupler
AC Assembly Complete
ACS Atmosphere Control and Supply
Assembly/Contingency System
ACU Arm Control Unit
Attitude Control Subsystem
Audio Communication Unit
AFEX Advanced Furnace for Microgravity Experiment with X-ray
radiography
AFR Anchor Foot Restraint
AHST Advanced Human Support Technology
ALSP Advanced Life Support Pack
AMP Ambulatory Medical Pack
APAS Androgynous Peripheral Attach System
APCU Assembly Power Converter Unit
APFR Articulating Portable Foot Restraint
APM Attached Pressurized Module
APS Automated Payload Switch
AR Atmosphere Revitalization
ARCU American-to-Russian Converter Unit
ARIS Active Rack Isolation System
ASC Aisle Stowage Container
ASCR Assured Safe Crew Return
ASI Italian Space Agency
ATU Audio Terminal Unit
AUAI Assembly-Contingency/UHF Audio Interface
AVU Artificial Vision Unit
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
BC Bus Controller
BCA Battery Charger Assembly
BCDU Battery Charge/Discharge Unit
BEE Base End Effector
Basic End Effector
BGA Beta Gimbal Assembly
BIT/BITE Built-in Test/Equipment
BP Blood Pressure
BSA Battery Stowage Assembly
BSP Baseband Signal Processor
BTF Biotechnology Facility
A B C D E
F G H I J
K L M N O
P Q R S T
U V W X Y
Z
C&C Command and Control
C&C MDM Command and Control Multiplexer/Demultiplexer
C&T Communication and Tracking
C&TS Communication and Tracking System
C&W Caution and Warning
C/L Crew Lock
CADU Channel Access Data Unit
CAM Centrifuge Accommodation Module
CAS Common Attach System
CB Control Bus, Clean Bench
CBEF Cell Biology Experiment Facility
CBM Common Berthing Mechanism
CC Central Computer
CCAA Common Cabin Air Assembly
CCD Cursor Control Device
CCPK Crew Contaminant Protection Kit
CCTV Closed Circuit Television
CDH Command and Data Handling
CDRA Carbon Dioxide Removal Assembly
CDS Continuous Data Steam
CETA Crew and Equipment Translation Aid
CIR Combustion Integrated Rack
CHeCS Crew Health Care System
CHRS Central Heat Rejection System
cm centimeter
CM Crewmember
CMG Control Moment Gyroscope
CMILP Consolidated Maintenance Inventory Logistics Planning
CMO Crew Medical Officer
CMRS Crew Medical Restraint System
CMS Countermeasure System
CO2 Carbon Dioxide
COF Columbus Orbital Facility
COR Communications Outage Recorder
COTS commercial-off-the-shelf
COU Concept of Operations and Utilization
COUP Consolidated Operations and Utilization Plan
CPC Control Post Computer
CPS Consolidated Planning System
CR Centrifuge Rotor
CRPCM Canadian Remote power Control Module
CRV Crew Rescue Vehicle
CSA Canadian Space Agency
CSA-CP Compound-Specific Analyzer - Combustion Products
CSA-H Compound-Specific Analyzer - Hydrazine
CTRS Conventional Terrestrial Reference System
CVIU Common Video Interface Unit
CVT Current Value Table
CWC Contingency Water Collection
CWS Caution and Warning Software
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
D&C Display and Control
DAIU Docked Audio Interface Unit
DC Docking Compartment
DCM Display and Control Module
DCSU Direct Current Switching Unit
DDCU Direct Current-to-Direct Current Converter Unit
DMI Designated Item
DSM Docking and Stowage Module
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
E/L Equipment Lock
EACP EVA Audio Control Panel
EATCS External Active Thermal Control System
ECG Electrocardiogram
ECLSS Environmental Control and Life Support System
ECU Electronics Control Unit
EDDA EMU Don/Doff Assembly
EE End Effectors
EEL Emergency Egress Lights
EETCS Early External Thermal Control System
EF Exposed Facility
EFA Engineering Feasibility Assessment
EHS Environmental Health System
EIOCU Enhanced Input/Output Control Unit
ELF Electrostatic Levitation Furnace
ELM-ES Experiment Logistic Module - Exposed Section
ELM-PS Experiment Logistic Module - Pressurized Section
ELOC Extended Loss of Communication
EMMI EVA Man-Machine Interface
EMU Extravehicular Mobility Unit
ER Extravehicular Robotics
EPCE Electrical Power Consumer Equipment
EPS Electrical Power System
ESA European Space Agency
ETCS. External Thermal Control System
ETOV Earth-to-Orbit Vehicle
ETVCG External Television Camera Group
EVA Extravehicular Activity
EV CM Extravehicular Crewmember
EV-CPDS Extravehicular-Charged Particle Directional Spectrometer
EVSU External Video Switch Unit
EXPRESS EXpediate the PRocess of Experiments to Space Station
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
FCF Fluids and Combustion Facility
FCR Flight Control Room
FCS Flight Crew Systems
FCT Flight Control Team
FDIR Fault Detection, Isolation, and Recovery
FDPA Flight Dynamics Planning and Analysis
FDS Fire Detection and Suppression
FEL First Element Launch
FF Free Flyer
FGB Functional Cargo Block
FIR Fluids Integrated Rack
FPEF Fluid Physics Experiment Facility
FRCB Flight Rule Control Board
FRGF Flight Releasable Grapple Fixture
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
GR&C Ground Rules and Constraints
GCTC Gagarin Cosmonaut Training Center
GF Grapple Fixture
GFI Ground Fault Interrupter
GHF Gradient Heating Furnace
GLA General Luminaire Assembly
GLONASS Global Navigation Satellite System
GNC Guidance, Navigation, and Control
GPC General Purpose Computer
GPS Global Positioning System
GR&C Generic Groundrules, Requirements, and Constraints
GUI Graphical User Interface
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Hab Habitation Module
HC Hand Controller
HDR High Data Rate
HEA Handrail Equipment Anchor
HEPA High Efficiency Particulate Air
HGA High Gain Antenna
HHR Habitat Holding Racks
HMS Health Maintenance System
HRF Human Research Facility
HRFM High Rate Frame Multiplexer
HRM High Rate Modem
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
I Increment
IAA Intravehicular Antenna Assembly
IAC Internal Audio Controller
IAS Internal Audio Subsystem
ICM Interim Control Module
IDRD Increment Definitions and Requirements Document
IEA Integrated Equipment Assembly
IEPT International Execute Planning Team
IF Intermediate Frequency
IFM In-Flight Maintenance
IGA Inter-Government Agreement
IMARS ISS MOD Avionics Reconfiguration System
IMMI IVA Man-Machine Interface
IMS Inventory Management System
IMV Intermodule Ventilation
IOCU Input/Output Controller Unit
IOP Integrated Operations Plan
IP International Partner
IPS Integrated Planning System
IPT Integrated Product Team
IRU In-flight Refill Unit
ISPR International Standard Payload Rack
ISS International Space Station
ISSPO International Space Station Program Office
ITCS Internal Thermal Control System
ITF Isothermal Furnace
ITS Integrated Truss Structure
IV Intravenous
IVA Intravehicular Activity
IV-CPDS Intravehicular-Charged Particle Directional Spectrometer
IVSU Internal Video Switch Unit
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
JEM Japanese Experiment Module
JEM EF Japanese Experiment Module Exposed Facility
JEM PM Japanese Experiment Module Pressurized Module
JEMRMS Japanese Experiment Module Remote Manipulator System
JEU Joint Electronics Unit
JOPA Joint Operations Planning Agreement
JSC Lyndon B. Johnson Space Center
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
KhSC Khrunichev Space Center
km kilometer
KSC Kennedy Space Center
Ku-band Ku-Band Subsystem
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Lab Laboratory Module
LAN Local Area Network
LB Local Bus
LBNP Lower Body Negative Pressure
LCA Lab Cradle Assembly
LDCR Long Duration Crew Restraint
LDFR Long Duration Foot Restraint
LDR Low Data Rate
LDU Linear Drive Unit
LED Light Emitting Diodes
LEE Latching End Effector
LGA Low Gain Antenna
LOS Loss-of-Signal
LRU Line Replaceable Unit
LSAR Logistics Support Analysis Records
LSE Laboratory Support Equipment
LSG Life Sciences Glovebox
LSM Life Support Module
LTL Low Temperature Loop
LTU Load Transfer Unit
LVLH Local Vertical/Local Horizontal
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
MA Main Arm
MAS Microbial Air Sampler
MBF Mission Build Facility
MBM Manual Berthing Mechanism
MBS Mobile Remote Servicer Base System
MBSU Main Bus Switching Unit
MCA Major Constituent Analyzer
MCAS MBS Common Attach System
MCC Mission Control Center
MCC-H Mission Control Center-Houston
MCC-M Mission Control Center-Moscow
MCS Motion Control System
MCU MBS Computer Unit
MDM Multiplexer/Demultiplexer
MEC Medical Equipment Computer
MELFI Minus Eighty degrees Celsius Laboratory Freezer
MIM Multi-Increment Manifest
MIP Mission Integration Plan
MITP Multilateral Increment Training Plan
MM/OD Micrometeoroid/Orbital Debris
MMI Man-Machine Interface
MOD Mission Operations Directorate
MODELS Mission Operations Directorate Engineering and Logistics
System
MOU Memorandums of Understanding
MPEV Manual Pressure Equalization Valve
MPLM Multi-Purpose Logistics Module
MSD Mass Storage Device
MSFC Marshall Space Flight Center
MSG Microgravity Science Glovebox
MSRF Materials Science Research Facility
MSS Mobile Servicing System
MT Mobile Transporter
MTBF Mean Time Between Failures
MTCL MT Capture Latch
MTL Moderate Temperature Loop
MUT Multi-Use Tether
MWA Maintenance Work Area
MWS Mini-Workstation
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
N2 Nitrogen
NASA National Aeronautics and Space Administration
NASDA National Space and Development Agency (Japan)
NiH 2 Nickel Hydrogen
NiCd Nickel Cadmium
Nm Newton-meter
NTSC National Telemetry/Television Standards Committee
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
O & C Operations & Checkout Facility NASA Kennedy Space Center, Florida
O&PE Operational and Personal Equipment
O2 Oxygen
OCCS Onboard Complex Control System
ODF Operations Data File
OE/V OSTP Editor/Viewer
OFA Operations Feasibility Assessment
OGA Oxygen Generator Assembly
OIU Orbiter Interface Unit
OOCI OSTP/ODF Crew Interface
OOM On-Orbit Maintenance
OOS On-orbit Operations Summary
OPF Orbiter Processing Facility at NASA Kennedy Space Center,
Florida
ORCA Oxygen Recharge Compressor Assembly
ORU Orbital Replacement Unit
ORUTD Orbital Replacement Unit Transfer Device
OSCA Onboard Spacesuit Control Assembly
OSO Operations Support Officer
OSTP Onboard Short Term Plan
OTCM ORU/Tool Change Out Mechanism
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
P&S Pointing and Support
PAS Payload Attach System
PAV Process Air Valve
PBA Portable Breathing Apparatus
PCA Pressure Control Assembly
PCAP Spacelab Payload Crew Activity Plan
PCBA Portable Clinical Blood Analyzer
PCMCIA Potable Computer Memory Card International Adapter
PCS Portable Computer System
PCU Plasma Contactor Unit
PCWQM Process Control and Water Quality Monitor
PDAC Procedures Development and Control
PDGF Power and Data Grapple Fixture
PDIM Power and Data Interface Module
PEP Portable Emergency Provision
PFCS Pump and Flow Control Subassembly
PFE Portable Fire Extinguisher
PG Product Group
PIA Payload Integration Agreement
PIM Payload Integration Manager
PIP Payload Integration Plan
PLSS Primary Life Support System
PM Pressurized Module
PMA Pressurized Mating Adapters
PMCA Power Manager Controller Application
POA Payload/ORU Accommodation
POC Payload Operations Complex
POCC Payload Operations Control Center
PODF Payload Operations Data File
POIC Payload Operations Integration Complex
Payload Operations Integration Center
POIF Payload Operations and Integration Function
POST Power On Self-Test
PP Planning Period
PPA Pump Package Assembly
PPS Primary Power System
PSA Power Supply Assembly
psid pounds per square inch differential
psig pounds per square inch gauge
PTCS Passive Thermal Control System
PTU Pan/Tilt Unit
PUL Portable Utility Light
PV Photovoltaic
PVA Photovoltaic Array
PVCU Photovoltaic Control Unit
PVM Photovoltaic Module
PVR Photovoltaic Radiator
PVTCS Photovoltaic Thermal Control System
PWP Potable Water Processor,
Portable Work Platform
PYR Pitch, Yaw, and Roll
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
QD Quick Disconnect
QDM Quick Don Mask
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
R&D Rendezvous and Docking
R&MA Restraints and Mobility Aid
R/P Receiver/Processor
R-S Reed-Solomon
RACU Russian-to-American Converter Unit
RAIU Russian Audio Interface Unit
RAM Radiation Area Monitor
Random Access Memory
RBI Remote Bus Isolator
RCS Reaction Control System
RED Resistive Exercise Device
RF Radio Frequency
RFCA Rack Flow Control Assembly
RFG Radio Frequency Group
RGA Rate Gyro Assembly
RHA Rack Handle Assembly
RHC Rotational Hand Controller
RM Research Module
RMS Remote Manipulator System
ROS Russian Orbital Segment
RPC Remote Power Controller
RPCM Remote Power Controller Module
RPDA Remote Power Distribution Assembly
RPF Robotics Planning Facility
RS Russian Segment
RSA Russian Space Agency
RSC-E Rocket Space Corporation-Energia
RS MCS Russian Segment Motion Control System
RSP Respiratory Support Pack
Resupply Stowage Platform
RSTS Rack Standalone Temperature Sensor
RSU Roller Suspension Unit
RT Remote Terminal
RTAS Rocketdyne Truss Attach System
RUPSM Resource, Utilization Planning and System Models
RWS Robotic Workstation
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
S-band S-Band Subsystem
SAFER Simplified Aid for EVA Rescue
SAR Shared Accommodations Rack
SARJ Solar Alpha Rotary Joint
SAW Solar Array Wing
SCI Signal Conditioning Interface
SCU Sync and Control Unit
SDFR Short Duration Foot Restraint
SDS Sample Delivery System
SFA Small Fine Arm
SFCA System Flow Control Assembly
SHFE Space Human Factors Engineering
SLD Subject Load Device
SLP Space Lab Pallet
SM Service Module
SMCC SM Central Computer
SOC State of Charge
SODF Systems Operations Data File
SOV Shutoff Valve
SPCE Service Performance and Checkout Equipment
SPCF Solution/Protein Crystal Growth Facility
SPD-1553B Serial Parallel Digital-1553B
SPDA Secondary Power Distribution Assembly
SPDM Special Purpose Dexterous Manipulator
SPG Single Point Ground
SPIP Station Program Implementation Plan
SPP Science Power Platform
SPS Secondary Power System
SSAS Segment-to-Segment Attach System
SSBRP Space Station Biological Research Project
SSC Station Support Computer
SSCS Space-to-Space Communication System
SSE Space Station Eyewash
SSK Surface Sampler Kit
SSRMS Space Station Remote Manipulator System
SSSR Space-to-Space Station Radio
SSU Sequential Shunt Unit
STEA Seat Track Equipment Anchor
STP Short Term Plan
SVS Space Vision System
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
TC Terminal Computer
TCCS Trace Contaminant Control Subassembly
TCS Thermal Control System
TDRS Tracking and Data Relay Satellite
TDRSS Tracking and Data Relay Satellite System
TEA Torque Equilibrium Attitude
TEPC Tissue Equivalent Proportional Counter
TERA Temporary Equipment Restraint Aid
THC Temperature and Humidity Control
Translational Hand Controller
TOCA Total Organic Carbon Analyzer
TOCK Current Orbital Coordinate System
TOPO Trajectory Operations Officer
TRC Transmitter/Receiver/Controller
TSM Transport Servicing Module
TTCS Telephone and Telegraph Communication Subsystem
TUS Trailing Umbilical System
TVIS Treadmill With Vibration Isolation System
TWMV Three-Way Mixing Valve
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
UB User Bus
UCS Ultrahigh Frequency Communication System
UDM Universal Docking Module
UHF Ultrahigh Frequency
UIS Universal Instrumentation System
UIA Umbilical Interface Assembly
ULCAS Unpressurized Logistics Carrier Attach System
UMA Umbilical Mechanism Assembly
UOP Utilization Operations Panel
Utility Outlet Panel
UP Urine Processor
U.S. United States
USOS United States Orbital Segment
United States Onboard Segment
United States On-Orbit Segment
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
VBSP Video Baseband Signal Processor
VDS Video Distribution Subsystem
VIS Vibration Isolation System
VOA Volatile Organic Analyzer
VRA Vent and Relief Assembly
VTR Video Tape Recorder
VS Video System
VSU Video Switch Unit
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
WMK Water Microbiology Kit
WORF Window Observational Research Facility
WRM Water Recovery and Management
WS Water Separator
WSA Water Sampler Kit
WSGS White Sands Ground Station
WVA Water Vent Assembly
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
XCF X-ray Crystallography Facility
XPOP X-Axis Pointing Out of Plane
X-Axis Perpendicular to Orbit Plane
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
ZOE Zone of Exclusion, i.e. gaps in TDRSS communications coverage