NASA Abbreviations and Acronyms

1. ASW
   Address and Synchronization Word
2. ATV
   Automated Transfer Vehicle
3. ATVCD
   Ascent Thrust Vector Control Driver
4. BAU
   Business As Usual
5. CCU
   Camera Control Unit
6. CCU
   Central Control Unit
7. CCU
   Communications Carrier Unit
8. CCU
   Crew Communications Unit
9. CCU
   Crew Compartment Umbilical
10. CCU
    Communications Carrier Umbilical
11. CCU
    Coupling Control Unit
12. CCU
    Crewman Communications Umbilical
13. CCV
    Chamber Coolant Valve
14. CER
    Cost Estimating Relationship
15. CPU
    Central Processing Unit
16. CPU
    Computer Printer Unit
17. CSS
    Communications Services Section
18. CSS
    Cross Support Services
19. CSS
    Computer Subsystem
20. CSS
    Control Stick Steering

Last updated: May 6, 2025 — Total entries: 14,020