NASA Abbreviations and Acronyms

1. UCN
   Uniform Control Number
2. UCOS
   Universal Checkout Station
3. UCPU
   Urine Collection and Pretreatment Unit
4. UCS
   Universal Control System
5. UCS
   Unutilities Control System
6. UCSD
   University of California, San Diego
7. UCT
   Universal Time Code
8. UCTA
   Urine Collection Transfer Assembly
9. UD
   Update
10. UDB
    Update Buffer
11. UDF
    Utility and Data Flow
12. UDF
    Unit Development Folder
13. UDL
    Unique Data Log
14. UDL
    Updata Link
15. UDL
    Update Link
16. UDOP
    Ultrahigh Doppler
17. UDS
    Universal Documentation System
18. UER
    Unique Equipment Register
19. UF
    Microfarad
20. UF
    Utilization Flight

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