Alphabetical Listing of NASA Acronyms
- HE — Helium
- HE — High Energy Astrophysics
- HEAO — High Energy Astronomy Observatory
- HEAP — High Energy Aim Point
- HECV — Helium Check Valve
- HEG — Helium Gage
- HEGV — Helium Gage Valve
- HEM — Hitchhike Experiment Module
- HEMI — Hemispherical (S-Band Antenna)
- HEMV — Helium Manual Valve
- HEO — High Energy Orbit
- HER — HIM EquiPment Rack
- HERSCP — Hazardous Exposure Reduction And Safety Criteria Plan
- HESS — High Energy Squib Simulator
- HETM — Hybrid Engineering Test Model
- HEX — Heat Exchanger
- HEX — Hexadecimal
- HEX — Hexagon
- HF — Hard Failure
- HF — High Frequency
- HF — Horizontal Flight
- HF — Hot Firing
- HF — Hydrogen Fill
- HF — Hyperfiltration
- HFA — High Frequency Accelerometer
- HFC — Heat Flow And Convection
- HFC — Hydraulic Flight Control
- HFCT — Hydraulic Flight Control Test
- HFCV — Helium Flow Control Valve
- HFDS — Hydrogen Fluid Distribution System
- HFE — High Frequency Executive
- HFM — Hollow Fiber Membrane
- HFMU — High Fidelity Mockup
- HFO — High Frequency Oscillator
- HFS — Horizontal Flight Simulator
- HFT — Horizontal Flight Test
- HFTF — Horizontal Flight Test Facility
- HFTS — Horizontal Flight Test Simulator
- HFX — High Frequency Transceiver
- HG — High Gain
- HG — Mercury
- HGA — High Gain Antenna
- HGDS — Hazardous Gas Detection System
- HGM — Hot-Gas Manifold
- HGR — Hangar
- HGR&SPTFAC — Hangar And Support Facility
- HGS — Hydrogen Gas Saver
- HGV — Hydrogen Gas Valve
- HGVT — Horizontal Ground Vibration Test
- HHC — Hammer Head Crane
- HHMU — Hand Held Maneuvering Unit
- HI — Honeywell
- HI — High
- HIC — Hickam Air Force Base
- HID — Hardware Interface Device
- HID — HIM Interface Distributor
- HIGH — PressuHigh Pressure
- HIGH — RatioMultiplier
- HIM — Hardware Interface Module
- HIP — Hardware Interface Program
- HIP — Hardware Interface Program
- HIPC — High Chamber Pressure
- HIPO — Hierarchical Input/Process Output
- HIPO — Hierarchy Plus InPut/Process/Output
- HIRAP — High-resolution Accelerometer Package
- HISAM — Hardware Initiated Standalone Memory
- HITS — High Rate Multiplexer InPut/Output Test System
- HIU — Headset Interface Unit
- HIU — Headset Interface Unit
- HIV — Helium Isolation Valve
- HK — Housekeeping
- HL — Hardline
- HL — Heel Line
- HL — High Level
- HL — Hinge Line
- HL — Hydrogen Line
- HLAL — High Level Assembler Language
- HLD — Hold
- HLDS — Hydrogen Leak Detection System
- HLMT — Hel Met
- HMA — Hypergot Maintenance Area
- HMC — Hybrid Microcircuit
- HMC — Hypergolic Maintenance And Checkout
- HMCC — Hypergolic Maintenance And Checkout Cell
- HMCF — Hypergolic Maintenance And Checkout Facility
- HMCF — Hypergolic Maintenance And Checkout Facility
- HMD — Helmet-Mounted Display
- HMF — Horizontal Mating Facility
- HMF — Hypergot Maintenance Facility
- HMP — Hydrozene Monopropeflant (RCS Propellant)
- HMS — History Memory System
- HMU — Hardware Mockup
- HMV — Hydrogen Manual Valve
- HNDLER — Handler
- HNGR — Hangar
- HO — Hydrogen-OxYgen
- HOL — High Order Language
- HOLC — High Order Language Computer
- HORIZ — Horizon
- HOS — High Order Software