| Acronym | Meaning |
![](file.png) | HE | Helium |
![](file.png) | HE | High Energy Astrophysics |
![](file.png) | HEAO | High Energy Astronomy Observatory |
![](file.png) | HEAP | High Energy Aim Point |
![](file.png) | HECV | Helium Check Valve |
![](file.png) | HEG | Helium Gage |
![](file.png) | HEGV | Helium Gage Valve |
![](file.png) | HEM | Hitchhike Experiment Module |
![](file.png) | HEMI | Hemispherical (S-Band Antenna) |
![](file.png) | HEMV | Helium Manual Valve |
![](file.png) | HEO | High Energy Orbit |
![](file.png) | HER | HIM EquiPment Rack |
![](file.png) | HERSCP | Hazardous Exposure Reduction And Safety Criteria Plan |
![](file.png) | HESS | High Energy Squib Simulator |
![](file.png) | HETM | Hybrid Engineering Test Model |
![](file.png) | HEX | Heat Exchanger |
![](file.png) | HEX | Hexadecimal |
![](file.png) | HEX | Hexagon |
![](file.png) | HF | Hard Failure |
![](file.png) | HF | High Frequency |
![](file.png) | HF | Horizontal Flight |
![](file.png) | HF | Hot Firing |
![](file.png) | HF | Hydrogen Fill |
![](file.png) | HF | Hyperfiltration |
![](file.png) | HFA | High Frequency Accelerometer |
![](file.png) | HFC | Heat Flow And Convection |
![](file.png) | HFC | Hydraulic Flight Control |
![](file.png) | HFCT | Hydraulic Flight Control Test |
![](file.png) | HFCV | Helium Flow Control Valve |
![](file.png) | HFDS | Hydrogen Fluid Distribution System |
![](file.png) | HFE | High Frequency Executive |
![](file.png) | HFM | Hollow Fiber Membrane |
![](file.png) | HFMU | High Fidelity Mockup |
![](file.png) | HFO | High Frequency Oscillator |
![](file.png) | HFS | Horizontal Flight Simulator |
![](file.png) | HFT | Horizontal Flight Test |
![](file.png) | HFTF | Horizontal Flight Test Facility |
![](file.png) | HFTS | Horizontal Flight Test Simulator |
![](file.png) | HFX | High Frequency Transceiver |
![](file.png) | HG | High Gain |
![](file.png) | HG | Mercury |
![](file.png) | HGA | High Gain Antenna |
![](file.png) | HGDS | Hazardous Gas Detection System |
![](file.png) | HGM | Hot-Gas Manifold |
![](file.png) | HGR | Hangar |
![](file.png) | HGR&SPTFAC | Hangar And Support Facility |
![](file.png) | HGS | Hydrogen Gas Saver |
![](file.png) | HGV | Hydrogen Gas Valve |
![](file.png) | HGVT | Horizontal Ground Vibration Test |
![](file.png) | HHC | Hammer Head Crane |