ACRONYM |
DEFINITION |
CONTRIBUTOR |
8' HTT |
8-Foot High Temperature Tunnel |
Langley |
H&S |
Health and Safety |
Goddard |
H/W |
Hardware |
Langley |
HA |
Hour Angle |
Goddard |
HAA |
Height Above Airport |
CASI |
HAB |
Habitation Module Shuttle/Space
Station |
Goddard |
HAC |
Hydrogenated Amorphous Carbon |
Goddard |
HACU |
Hispanic Association of Colleges
and Universities |
Goddard |
HAD |
Hardware Data Acquisition |
Goddard |
HAD |
Hubble Data Archive |
Goddard |
HAIRS |
High Accuracy Inter-satellite
Ranging System |
Goddard |
HALIS |
High Angle of Attack Inviscid
Solution |
Langley |
HALO |
High Altitude Large Optics |
CASI |
HALOE |
Halogen Occultation Experiment |
CASI |
HANDS |
High Altitude Nuclear Detection
Studies |
CASI |
HAO |
High Altitude Observatory - (
National Center for Atmospheric Research, Boulder,
CO) |
CASI |
HAPEX |
Hydrological-Atmospheric Pilot
Experiment |
Goddard |
HAPS |
Hydrazine Auxiliary Propulsion
System |
Goddard |
HAR |
HST Anomaly Report |
Goddard |
HARCO |
Hyperbolic Area Coverage System
(Navigation) |
CASI |
HARLIE |
Holographic Airborne Rotating
Lidar Instrument Experiment |
CASI |
HARP |
Hubble Aberration Recovery Program |
Goddard |
HARP |
Hybrid Automated Reliability
Predictor |
Langley |
HARV |
High Angle-of- Attack Research
Vehicle |
Goddard |
HARV |
High Alpha Research Vehicle |
CASI |
HAS |
High Speed Arithmetic (package) |
Goddard |
HAS |
Hyperion Sensor Assembly |
Goddard |
HASE |
HST Airborne Support Equipment |
Goddard |
HASP |
Hand Altitude Sounding Projectile |
CASI |
HASP |
High Altitude Space Platform |
CASI |
HAT |
Height Above Touchdown |
CASI |
HAWC |
High Resolution Airborne Wideband
Camera |
Goddard |
HAWK |
Homing-All-the-Way Killer |
CASI |
HAZMAT |
Hazardous Material |
Goddard |
HBCU |
Historically Black Colleges and
Universities and Minority Institutions |
Goddard |
HBCU |
Historically Black Colleges and
Universities |
CASI |
HBDA |
High Background Detector Array |
Goddard |
HBNQ |
Nitroguanidine |
CASI |
HBT |
Hetero-Junction Bipolar Transistors |
CASI |
HBWR |
Halden Boiling Heavy-Water Reactor |
CASI |
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HCCL |
Half Crystal Can Latching |
Goddard |
HCD |
Hardware Command Distribution |
Goddard |
HCF |
Hardened Compact Fiber |
CASI |
HCI |
Hardware Computer Interface |
Goddard |
HCI |
Horizon Crossing Indicator |
Goddard |
HCI |
Human-Computer Interface |
CASI |
HCMM |
Heat Capacity Map Mission (NASA) |
Langley |
HCMM |
Heat Capacity Mapping Mission
(NASA) |
CASI |
HCP |
Hexagonal Close Packed Structures |
CASI |
HD |
Hard Drive |
Goddard |
HDC |
Hybrid Driver Controller (Space
Shuttle) |
CASI |
HDD |
Head-Down Display |
CASI |
HDD |
Human Disorientation Device |
CASI |
HDE |
Heater Drive Electronics |
Goddard |
HDF |
Hierarchical Data Format |
Goddard |
HDF |
Hubble Deep Field |
Goddard |
HDF-EOS |
Hierarchical Data Format – Earth
Observing System |
Goddard |
HDI |
High Density Interconnect |
Goddard |
HDIS |
HST Digital Imaging System |
Goddard |
HDL |
Handle |
CASI |
HDL |
Hardware Description Language(s) |
CASI |
HDL |
Harry Diamond Labs., Washington,
DC |
CASI |
HDOS |
Hughes Danbury Optical Systems |
Goddard |
HDQTRS |
Headquarters |
Langley |
HDR |
High Data Rates (data transmission
speeds) |
CASI |
HDRM |
Hold Down and Release Mechanism |
Goddard |
HDRS |
High Data Rate System |
Goddard |
HDRS |
Hold Down and Release System |
Goddard |
HDS |
Hybrid Dynamic Simulator |
CASI |
HDSL |
High-bit-rate Digital Subscriber
Line |
CASI |
HDT |
Harmonic Drive Technologies |
Goddard |
HDT |
High Density Tape |
Goddard |
HDTV |
High Definition Television |
CASI |
HDWE |
hardware |
Langley |
HDX |
Half Duplex Transmission (Data
communication) |
Langley |
HE |
Heat Exchanger |
Goddard |
HE |
High Eccentricity orbit |
CASI |
HEA |
Head-End Assembly |
Goddard |
HEA |
Higher Education Act of 1965 |
Goddard |
HEA |
Hyperion Electronics Assembly |
Goddard |
HEAO |
High Energy Astronomy Observation
Satellite |
Goddard |
HEAO |
High Energy Astronomical Observatory
(Spacecraft) |
CASI |
HEASARC |
High Energy Astrophysics Science
Archival Research Center |
Goddard |
HECRE |
High Energy Cosmic Ray Experiment |
CASI |
HED |
Human Energy Expenditure |
CASI |
HEDS |
Human Exploration and Development
of Space |
Goddard |
HEF |
High Efficiency |
Goddard |
HEF |
High Energy Fuel |
CASI |
HEG |
High Enthalpy wind tunnel, Goettingen |
CASI |
HEI |
Human Exploration Initiative |
CASI |
HEIDI |
High Energy Imaging Device |
Goddard |
HEIFE |
Heihe basin Field Experiment |
Goddard |
HEIST |
High Energy Isotope Spectrometer
Telescope |
CASI |
HEL |
Human Engineering Lab., Aberdeen
Proving Ground, MD |
CASI |
HELIO |
Heliocentric |
CASI |
HElSPEC |
High Energy Imaging Spectrometer |
Goddard |
HEMS |
High Energy Magnet Spectrometer |
Goddard |
HEMT |
High Electron Mobility Transistor |
CASI |
HENRE |
High Energy Neutron Reaction
Experiment (AEC) |
CASI |
HEO |
Highly Elliptical Orbiters |
Goddard |
HEO |
High Earth Orbit |
CASI |
HEO |
Highly Elliptical Orbit |
CASI |
HEPA |
High Efficiency Particulate Air |
Goddard |
HEPAD |
High Energy Proton and Alpha
Detector |
CASI |
HERF |
High Energy Rate Forming of Powdered
metals (Forging) |
CASI |
HERO |
Hazards of Electromagnetic Radiation
to Ordinance |
CASI |
HERO |
High-Energy Replicated Optics |
CASI |
HERS |
High Energy Range Spectrometer
(GIOTTO) |
CASI |
HESI |
High Energy Solar Imager |
Goddard |
HESP |
High Energy Solar Physics |
CASI |
HESSI |
High Energy Solar Spectroscopic
lmager |
Goddard |
HET |
Health/Education Telecommunications
(Experiment) |
CASI |
HETE |
High Energy Transient Experiment |
CASI |
HETE |
High Energy Transient Explorer |
CASI |
HETG |
(Chandra’s) High Energy Transmission Grating |
CASI |
HEUS |
High Energy Upper Stage (Engine) |
CASI |
HEW |
Half Energy Width |
CASI |
HEW |
Department of Health, Education
and Welfare |
CASI |
HEX |
Hexadecimal |
Langley |
HEXAGONE |
High Energy X-ray and Gamma-ray
Observatory for Nuclear Emissions (University
of
California-Berkeley) |
Goddard |
HEXTE |
High Energy X-ray Timing Experiment |
Goddard |
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HF |
High Frequency |
CASI |
HFA |
Hot Flow Anomalies |
CASI |
HFE |
Heat Flow Experiment |
CASI |
HFE |
Human Factors Engineering |
CASI |
HFMS |
High Fidelity Mechanical Simulator |
Goddard |
HFMS |
High Frequency Microwave Sounder |
Langley |
HFRM |
High Focal Ratio Mode |
Goddard |
HFS |
Human Factors Society |
Langley |
HFSS |
High Frequency Structure Simulator |
Goddard |
HFSS |
High-Frequency Sounder System |
CASI |
HGA |
High Gain Antenna |
Langley |
HGA |
High-Gain Antenna |
CASI |
HGAS |
High Gain Antenna System |
Goddard |
HGBU |
High Gyro Bias Updates |
Goddard |
HH |
Herbig-Haro |
Goddard |
HH |
Hitchhiker |
Goddard |
HH |
Horizontal, Horizontal Polarization |
Goddard |
HH objects |
Herbig-Haro objects |
CASI |
HHC |
Higher Harmonic Control |
CASI |
HH-G |
Hitchhiker-G (Shuttle cargo bay
sidewall mounted carrier for small experiments) |
CASI |
HH-G1 |
Hitchhiker-G1 (Demonstration
flight of Hitchhiker-G hardware) |
CASI |
HH-M |
Hitchhiker-M (Shuttle cargo bay
across-bay carrier for small experiments) |
CASI |
HHS |
Health and Human Services |
CASI |
HI |
Human Interaction |
Langley |
HICAT Project |
High Altitude Clear Air Turbulence |
CASI |
HICAT Project |
High Resolution Coverage Antenna
Technique |
CASI |
HIEFOGS |
High Efficiency Faint Object
Infrared Grating Spectrometer |
Goddard |
HIFE |
Hardware Interface Emulator |
Goddard |
HIIS |
Heavy Ions In Space |
CASI |
HILAT |
High Latitude Satellite |
CASI |
HiMAT |
Highly Maneuverable Aircraft
Technology |
CASI |
HIMS |
Hubble Imaging Michaelson Spectrometer |
Goddard |
HIP |
Hardware Interface Processor |
Goddard |
HIP |
Hot Iso-static Press |
Goddard |
HIP |
Hot Isostatic Pressing |
CASI |
HIPLEX |
High Plains Cooperative Program
(Big Springs, TX) |
CASI |
HIPPARCOS |
High Processor Parallax Collecting
Satellite |
Goddard |
HIPPI |
High Performance Parallel Interface |
Langley |
HIRAP |
High-Resolution Accelerometer
Package (OEX) |
Langley |
HiRAP |
High Resolution Accelerometer
Package |
CASI |
HIRDLS |
High-Resolution Dynamics Limb
Sounder |
CASI |
HIREGRS |
High Resolution Gamma Ray Spectrometer
(University of California-Berkeley) |
Goddard |
HIREXS |
High Resolution X-ray Spectrometer
(University of California-Berkeley) |
Goddard |
HIRF |
High Intensity Radiated Fields |
CASI |
HIRF |
High Intensity Radio Frequency |
CASI |
HIRIS |
High Resolution Imaging Spectrometer |
CASI |
HIRL |
High Intensity Runway Lights |
CASI |
HIRS |
High Resolution Infrared Radiation
Sounder |
Goddard |
HIRS |
High Resolution Infrared Sounder |
CASI |
HIRS/MSU |
High Resolution Infrared Sounder/Microwave
Sounding Unit |
CASI |
HIRT |
High Reynolds Number Tunnel |
CASI |
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HIS |
High Resolution Spectroscopy
Mission |
Goddard |
HIS |
High-Resolution Interferometer
Spectrometer |
Langley |
HIS |
Horizontal Situation Indicator |
CASI |
HIS |
HST Instrument Servicing |
Goddard |
HISEC |
High Stability Engine Control |
Goddard |
HISM |
Hot Interstellar Medium |
CASI |
HIT |
Heavy Ion Telescope |
Goddard |
HITAB Program |
High-Altitude Target and Background
Program |
CASI |
HITAR |
HST Integration and Test Anomaly
Report |
Goddard |
HITEN |
Japanese Lunar Trajectory Probe
Mission, 1993 |
Goddard |
HITV |
High-speed Interplanetary Tug/Cocoon
Vehicle |
CASI |
HIVES |
High Volume Electrostatic Sampler |
CASI |
HIVOS |
High Vacuum Orbital Simulator |
CASI |
HKPS |
Housekeeping Power Supply |
Goddard |
HL |
Holiday Leave |
Goddard |
HLCL |
High Level Command Language |
Goddard |
HLD |
High Level Discrete (Command
Type) |
Goddard |
HLH |
Heavy-Lift Helicopter |
CASI |
HLLV |
Heavy Lift Launch Vehicle |
CASI |
HLP |
Helper |
Langley |
HMB |
3-hydroxy-3-methyl butene |
CASI |
HMC |
Halley Multicolor Camera |
CASI |
HMD |
Helmet-Mounted Display |
CASI |
HME |
Handheld Microgravity Experiment |
CASI |
HMF |
Health Maintenance Facility |
CASI |
HMMR |
High Resolution Multifrequency
Microwave Radiometer (Earth Observing System,
EOS) |
CASI |
HMX |
Cyclotetramethylene Tetranitramine |
CASI |
HMXB |
High-Mass X-ray Binary |
CASI |
HNLC |
High Nutrient, Low Chlorophyll |
Goddard |
HNPF |
Hallam Nuclear Power Facility |
CASI |
HNST |
Hexanitrostilbene |
CASI |
HOB |
High-Order Bit |
Goddard |
HOB |
High-Order Byte |
Goddard |
HOE |
Holographic Optical Elements |
CASI |
HOL |
Higher Order Language |
Goddard |
HOMS |
Hubble Optical Mechanical Simulator |
Goddard |
HOP |
High Output Paraffin |
Goddard |
HOPA |
High Output Paraffin Actuator |
Goddard |
HOPE |
Halley Optical Probe Experiment |
CASI |
HOPE Spacecraft |
Hydrogen Oxygen Spacecraft |
CASI |
HOS |
Human Operator Simulator |
Langley |
HOSC |
Huntsville Operations Support
Center |
Goddard |
HOST |
HST Orbital Systems Test |
Goddard |
HO-W |
Hydrographic Office Washington,
DC |
CASI |
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HP |
Heat Pipe |
Goddard |
HP |
Hewlett Packard |
Goddard |
HP |
High Power |
Goddard |
HPA |
High-Pressure Air |
Langley |
HPC |
High Performance Computing |
CASI |
HPC |
High Pulse Command |
Goddard |
HPCC |
High Performance Computing and
Communications program |
CASI |
HPCC |
High Performance Computing Center |
Goddard |
HPCCP |
High Performance Computing and
Communications Program |
Langley |
HPCCPT-1 |
High Performance Computing and
Communications Program Testbed-1 |
Langley |
HPCE |
High Power Control Electronics |
Goddard |
HPCG |
Handheld Protein Crystal Growth |
CASI |
HPCI |
High Performance Computing Initiative |
CASI |
HPD |
Half Power Diameter |
Goddard |
HPE |
Hexakis (NF2) Dipropyl Ether |
CASI |
HPHX |
Heat Pipe Heat Exchanger |
Goddard |
HPM |
High Performance Motor |
CASI |
HPM |
High Power Microwave |
CASI |
HPOTP |
High Pressure Oxidizer Turbopump |
CASI |
HPP |
Heat Pipe Performance & Working
Fluid Behavior in Microgravity |
CASI |
HPP-2 |
Heat Pipe Performance Experiment |
Goddard |
HPSS |
High Performance Storage System |
CASI |
HPTE |
High Precision Tracking Experiment |
CASI |
HPU |
Hydraulic Power Units |
CASI |
HPU |
Hydraulic Pumping Unit |
CASI |
HQ |
Headquarters |
Goddard |
HQAM |
Hardware Quality Assurance Manual |
Goddard |
HQS |
Headquarters |
CASI |
HR |
Hazard Report |
Goddard |
HRA |
High Resolution Apodizer |
Goddard |
HRC |
High Rate Channel |
Goddard |
HRC |
High Resolution Camera |
Goddard |
HRDI |
High-Resolution Doppler Image |
Langley |
HRDL |
High Rate Data Link |
Goddard |
HRFPI |
High Resolution Fabry-Perot Interferometer |
Goddard |
HRG |
Hemispherical Resonator Gyro |
Goddard |
HRG |
High Rate Gyro |
Goddard |
HRI |
High Resolution Imager |
CASI |
HRIR |
High Resolution Infrared Radiometer |
CASI |
HRIS |
High Resolution Infrared Sounder |
CASI |
HRMA |
High Resolution Mirror Assembly |
CASI |
HRMS |
Human Resources Management Specialist |
Goddard |
HRPT |
High-Resolution Picture Transmission |
CASI |
HRS |
Heat Rejection System |
Goddard |
HRS |
High Rate Switch |
Goddard |
HRS |
High-Resolution Spectrograph |
CASI |
HRSAS |
High Resolution Small Area Sensor |
Goddard |
HRSGS |
High Resolution Shuttle Glow
Spectroscopy |
CASI |
HRSO |
High Resolution Solar Observatory |
Goddard |
HRSPIN |
Hampton Roads Software Process
Improvement Network |
Langley |
HRTC |
High Resolution Telescope Cluster |
CASI |
HRTEM |
High Resolution Transmission
Electron Microscopy |
CASI |
HRTS |
High Resolution Telescope Spectrometer |
Goddard |
HRTS |
High Resolution Telescope and
Spectrograph - (Orbiting Solar Laboratory) |
CASI |
HRTTS |
High Rate Telemetry Test Set |
Goddard |
HRTV |
Human Rated Thermal Vacuum |
Goddard |
HS-376 RET |
HS-376 Retrieval (Salvage of
HS-376 communications satellites launched on
the tenth Shuttle mission) |
CASI |
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HSB |
Humidity Sounder for Brazil |
Goddard |
HSCT |
High Speed Civil Transport |
CASI |
HSDMC |
High Speed Direct Multiplex Control |
Goddard |
HSF |
Human Space Flight |
Goddard |
HSI |
High-Speed
Interferometer (Space-developed remote detector
of smog) |
CASI |
HSIF |
Hardware Software Integration
Facility |
Goddard |
HSM |
Harmonic Subcarrier Method |
CASI |
HSP |
High Speed Photometer |
Goddard |
HSR |
High Speed Research |
Goddard |
HSRL |
High Spectral Resolution Lidar |
CASI |
HSRP |
High Speed Research Program |
CASI |
HSS |
High Speed Serial |
Goddard |
HST |
Hypersonic Transport |
CASI |
HST |
Hubble Space Telescope |
CASI |
HSTAR |
HST Anomaly Report |
Goddard |
HSTDEK |
Hubble Space Telescope Design/Engineering
Knowledge base |
CASI |
HSTOMS |
Hubble Space Telescope Observatory
Management System |
Goddard |
HSTP |
Hubble Space Telescope Project |
Goddard |
HSTP-G |
Hubble Space Telescope Project
– Goddard |
Goddard |
HSTSM |
Hubble Space Telescope Salvage
Mission |
CASI |
HSVP |
High Speed Vector Processor |
CASI |
HTAH |
High Temperature Air Heat (for
magnetohydrodynamics power plants) |
CASI |
HTFFR |
High Temperature Fast Flow Reactor |
CASI |
HTGI |
How To Get It |
CASI |
HTGR |
High Temperature Gas-cooled Reactor |
CASI |
HTML |
Hypertext Markup Language |
CASI |
HTPB |
Hydroxy Terminated Polybutadiene
Polymer (Propellant) |
CASI |
HTS |
High Temperature Superconducting |
Goddard |
HTSC |
High Temperature Superconductors |
CASI |
HTT |
High-Temperature Tunnel |
Langley |
HTTP |
Hyper Text Transfer Protocol |
Goddard |
HTXS |
Next-Generation of H-2 Transfer
Vehicle |
Goddard |
HUBEX |
Huaihe Basin Experiment |
Goddard |
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HUD |
Department of Housing and Urban
Development |
CASI |
HUD |
Head Up Display |
CASI |
HUM |
Health and Usage Monitoring Systems |
CASI |
HUT |
Hopkins Ultraviolet Telescope |
Goddard |
HV |
High Voltage |
Goddard |
HVAC |
Heating Ventilation and Air Conditioning |
CASI |
HVAC |
High-Voltage Alternating Current |
CASI |
HVC |
Huntsville Voice Control |
Goddard |
HVPS |
High Voltage Power Supply |
Goddard |
HWCTR |
Heavy Water Components Test Reactor |
CASI |
HXIS |
Hard X-ray Imaging Spectrometer |
CASI |
HXLV |
Hyper-X Launch Vehicle |
Goddard |
HXRBS |
Hard X-ray Burst Spectrometer |
CASI |
HXT |
Hard X-ray Telescope |
Goddard |
HYD |
Hydraulics (Space Shuttle) |
CASI |
HYFLEX |
Hypersonic Flight Experiment |
CASI |
HYMOSS |
Hybrid Mosaic on Stacked Silicon |
CASI |
HYPULSE |
Shocktube facility at GASL |
Langley |
HySTP |
Hypersonic Systems Technology
Program |
Langley |
Hz |
Hertz |
CASI |
HZE |
Highly Ionizing Radiation |
Langley |
HZE |
(High-ionizing high energy particles) |
CASI |
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