AFRM - airframe
AP - Associated Press
ASPO - Apollo Spacecraft Program Office
Btu - British thermal units
cm - centimeter, centimeters
CM - command module
CSM - command and service modules
cu m - cubic meter, cubic meters
DOD - Department of Defense
ELS - earth landing system
F - Fahrenheit
fps - feet per second
ft - foot, feet
g - specific gravity
GAEC - Grumman Aircraft Engineering Corporation
GE - General Electric
HF - high frequency
IBM - International Business Machines Corporation
in - inch, inches
ITT - International Telephone and Telegraph Corporation
JPL - Jet Propulsion Laboratory
JSC - Johnson Space Center
K - Kelvin scale
kg - kilogram, kilograms
KSC - Kennedy Space Center
lb - pound
lbs - pounds
LEM - Lunar excursion module
LLRV - Lunar Landing Research Vehicle
LTA - LEM test article
m - meter, meters
MDF - mild detonating fuse
mi - mile, miles
MIT - Massachusetts Institute of Technology
MSC - Manned Spacecraft Center
MSFC - Marshall Space Flight Center
NAA - North American Aviation, Inc.
NASA - National Aeronautics and Space Administration
nm - nautical miles
OMSF - Office of Manned Space Flight
psia - pounds per square inch average
RCA - Radio Corporation of America
RCS - reaction control system
RF - radio frequency
SID - Space and Information Systems Division (NAA)
SM - service module
sq m - square meter, square meters
SSC - space suit communications
VHF - very high frequency
WSMR - White Sands Missile Range
WSTF - White Sands Test Facility yard, yards