NASA Abbreviations and Acronyms

1. HPHX
   Heat Pipe Heat Exchanger
2. HPI
   high-performance insulation
3. HPICS
   Heat Pipe Instrumentation and Control System
4. HPO
   Hydrogen Peroxide
5. HPOL
   High-Power Optics Laboratory
6. HPOP
   High-Pressure Oxidizer Pump
7. HPOT
   High-Pressure Oxidizer Turbopump
8. HPOTP
   High-Pressure Oxidizer Turbopump
9. HPPF
   Horizontal Payloads Processing Facility
10. HPR
    Hydrogen Pressure Regulator
11. HPRV
    Hydrogen Pressure Relief Valve
12. HPS
    Hydraulic Power SYstem
13. HPT
    High-Pressure Test
14. HPV
    high-pressure valve
15. HQ
    Headquarters
16. HQ
    Nasa Headquarters
17. HQ
    Headquarters (HDQ Preferred)
18. HQR
    Handling Qualities Rating (Cooper-Harper)
19. HR
    Hour
20. HR
    Hazard Report

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