NASA Abbreviations and Acronyms

1. PEL (PIXEL)
   Picture Element
2. PEMS
   Performance Measurement System
3. PEP
   Power Extension Package
4. PEP
   Proposal Entry Processor
5. PER
   Period
6. PER
   Perigee
7. PER
   Pre Environmental Review
8. PERF
   Perform
9. PERIGEE
   Alperigee Altitude
10. PERR
    Pre-Environmental Readiness Review
11. PET
    Phase Elapsed Time
12. PETA
    Performance Evaluation and Trend Analysis
13. PETB
    Preflight Test Bus
14. PETS
    Payload Environmental Transportation System
15. PETS
    Pocc Experiments Timeline System
16. PETS
    P/l Experiment Test System (ksc)
17. PETS
    Pocc Experiments Timeline System (gdsd and Spacelab
18. PEU
    Peripheral Electronics Unit
19. PF
    Probability of Failure
20. PF
    Pulse Frequency

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