Random Access Communications System
Random Access Control System (SAUS)
Reactor Auxiliary Cooling System - Nuclear energy (NUCP)
Recruit Allocation Control System - Navy (NVT)
Redundant Attitude Control System (MCD)
Regenerable Affinity Chromatography Support
Reiter Acoustic Startle (SAUS)
Relative Absorption Cross Section (SAUS)
Remote Access Calibration System (SAUS)
Remote Access Computer System (SAUS)
Remote Access Computing System - Computer science
Remote Automatic Calibration System (NASA)
Remote Automatic Control System (KSC)
Request for Approval of Contractual Support
Road/Automobile Communication System - Automotive engineering
Rocket Attitude Control System (ACAE)
Rotating Antenna C-Band Scatterometer (SAUS)
Rotation Axis Coordinate System (MCD)
Royal Australasian College of Surgeons