Acronyms

Acronym/Abbreviation	Definition
AMS	Alpha Magnetic Spectrometer
BEAM	Bigelow Expandable Activity Module
BGA	Beta Gimbal Assembly
C&T	Communications and Tracking
CBM	Common Berthing Mechanism
CMG	Control Moment Gyroscope
COF	Columbus Orbital Facility (Columbus)
DC	Direct Current
DC-1	Docking Compartment 1 (Pirs)
ECLSS	Environmental Control and Life Support System
ELC	ExPRESS Logistics Carrier
EPS	Electrical Power System
ESP	External Stowage Platform
EVA	Extravehicular Activity
FGB	Functional Cargo Block (Zarya)
FWD	Forward
GNC	Guidance, Navigation & Control
GUI	Graphic User Interface
HRS	Heat Rejection System
HRSR	Heat Rejection System Radiator
HTV	H-II Transfer Vehicle (Kounotori)
IDA	International Docking Adapter
IEA	Integrated Equipment Assembly
iROSA	ISS Roll Out Solar Array
ISS	International Space Station
JEM	Japanese Experiment Module (Kibo)
JEM-EF	JEM Exposed Facility
JEM-ELM-PS	JEM Pressurized Section
JEM-PM	JEM Pressurized Module
K	----
L	----
MBS	Mobile Base System
MIMIC	Mechatronic Instantiated Model Interactively Controlled
MLM	Multipurpose Laboratory Module (Nauka)
MRM-1	Mini-Research Module 1 (Rassvet)
MRM-2	Mini-Research Module 2 (Poisk)
MT	Mobile Transporter
N	----
O	----
PCB	Printed Circuit Board
PMA	Pressurized Mating Adapter
PMM	Permanent Multipurpose Module (Leonardo)
PSARJ	Port Solar Alpha Rotary Joint
PTRRJ	Port Thermal Radiator Rotary Joint
PV	Photovoltaic
PVGF	Power and Video Grapple Fixture
Q	----
ROS	Russian Orbital Segment
RPM	Rotations Per Minute
SARJ	Solar Alpha Rotary Joint
SASA	S-band Antenna Support Assembly
SAW	Solar Array Wing (one wing has two solar arrays)
SGANT	Space-to-Ground Antenna
SM	Service Module (Zvezda)
SSARJ	Starboard Solar Alpha Rotary Joint
SSRMS	Space Station Remote Manipulator System (Canadarm2)
STRRJ	Starboard Thermal Radiator Rotary Joint
TCS	Thermal Control System
TDRS	Tracking and Data Relay Satellite
TLE	Two-Line Element Set
TRRJ	Thermal Radiator Rotary Joint
USOS	US Orbital Segment
VV	Visiting Vehicle
W	----
X	----
Y	----
Z	----