H | altitude |
H | altitude rate |
H | hazardous (task classification) |
H | henry (SI unit) |
H | momentum |
H&D | hardened and dispersed |
H&K | homing and kill |
H-CITE | horizontal cargo integration test equipment |
H-S | Hamilton Standard |
H-S | horizon scanner |
H-S | horizon sensor |
H/A | hazardous area |
H/B | hyperbaric |
H/C | head count |
H/E | heat exchanger |
H/F | human factor |
H/L | hardline |
H/O | handover |
H/S | heat shield |
H/SIR | hardware and software integration review |
H/X | heat exchanger |
H2O2 | hydrogen peroxide |
H2S | hydrogen sulfide |
HA | apogee altitude |
HA | hazard analysis |
HA | high altitude |
HA | higher authority |
HAA | high-altitude abort |
HAADS | high-altitude attitude determination system |
HAARS | high-altitude attitude reference system |
HAB | high-altitude burst |
HABP | Hypersonic Arbitrary Body Program |
HAC | Hughes Aircraft Company |
HAC | heading alignment circle |
HAC | heading alignment cylinder |
HAD | heat-actuated device |
HAFB | Hill Air Force Base |
HAFB | Holloman Air Force Base |
HAINS | high-accuracy inertial navigation system |
HAK | horizontal access kit |
HAL | Houston aerospace language |
HAL | high-order articulated language |
HAL | high-order assembly language |
HAL/S | high-order assembly language for Shuttle |
HAL/S | high-order programming language for Spacelab usage |
HALO | high-altitude large optics |
HAM | height adjustment maneuver |
HAMP | handling and moving procedure |
HANE | high-altitude nuclear explosion |
HAP | Hardware Allocation Panel |
HAP | Honeywell array processor |
HAP | high-speed arithmetic processor |
HAR | hazard analysis report |
HAS | high-altitude sensor |
HAS | hold-down alignment support |
HAS | hydraulic actuation system |
HASC | high-altitude surveillance concept |
HAST | high-altitude supersonic target |
HAW | Hawaii (STDN) |
HB | half-breadth |
HB | handbook |
HB | high bay |
HB | hyperbaric |
HBBW | half-beam bandwidth |
HBR | high bit rate |
HBT | Heflex bioengineering test |
HBW | hot bridge wire |
HC | hand control |
HC | head count |
HC | high carbon |
HC | hybrid computer |
HCCB | Hardware Configuration Control Board |
HCDB | historical cost data base |
HCF | HIM configuration file |
HCF | high-cycle fatigue |
HCI | hardness-critical item |
HCM | hard-copy module |
HCMM | heat capacity mapping mission |
HCP | hydraulic circulation pump |
HCR | high cross range |
HCRB | Hardware Configuration Review Board |
HCS | high-carbon steel |
HCSHT | high-carbon steel heat-treated |
HCSL | Hybrid Computation and Simulation Laboratory |
HCU | hydraulic charging unit |
HCV | helium check valve |
HCl | hydrogen chloride |
HD | hand-drawn |
HD | heavy duty |
HD | highly desirable |
HD | hold-down |
HD | horizontal drain |
HD | hydrogen drain |
HDA | hardware disposition area |
HDA | housekeeping data acquisition |
HDC | Hasselblad data camera |
HDDR | high-density digital recorder |
HDI | Human Development Institute |
HDP | hold-down post |
HDR | high data rate |
HDRA | high-data-rate assembly |
HDRM | high-data-rate multiplexer |
HDRR | high-data-rate recorder |
HDRS | high-data-rate system |
HDRSS | high-data-rate storage system |
HDS | hardware description sheet |
HDS | hydrogen disposal system |
HDTV | high-definition television |
HDX | half-duplex |
HE | hardware evaluation |
HE | hardware evaluator |
HE | heat exchange |
HE | heat exchanger |
HE | high explosive |
HE | high explosive on target |
HE | high-energy astrophysics |
HE | human engineering |
HEAO | High-Energy Astronomy Observatory |
HEAP | high-energy aimpoint |
HEDI | high endoatmospheric defense interceptor |
HEDS | high endo designation sensor |
HEDSIM | high endo simulation |
HEDSIM | high endoatmospheric defense system simulator |
HEDSIM | high endoatmospheric event-based simulation |
HEL | high-energy laser |
HELCUSS | high-energy laser computerized unmanned space |
HELF | high-energy laser fluence |
HEM | hitchhike experiment module |
HEMIL | hardware evaluator, man in loop |
HEO | high Earth orbit |
HEO | high-energy orbit |
HEOO | Honeywell Electro-Optical Operations |
HEOR | historical event operation record |
HEOS | high endo designator sensor |
HEPA | high-efficiency particle accumulator |
HEPA | high-efficiency particle air |
HER | HIM equipment rack |
HERSCP | hazardous exposure reduction and safety criteria plan |
HERT | Headquarters Emergency Relocation Team |
HESS | high-energy squib simulator |
HEXAD | developmental 6-axis IMU |
HF | hard failure |
HF | high frequency |
HF | horizontal flight |
HF | hot firing |
HF | hydrogen fill |
HF | hydrogen fluoride |
HF/DF | hydrogen fluoride/deuterium fluoride |
HFA | high-frequency accelerometer |
HFC | heat flow and convection |
HFC | hydraulic flight control |
HFCL | Hydraulic Flight Control Laboratory |
HFCT | hydraulic flight control test |
HFCV | helium flow control valve |
HFCW | hydrogen fluoride continuous wave |
HFDP | human factors development plan |
HFDS | hydrogen fluid distribution system |
HFE | high-frequency executive |
HFE | human factors engineering |
HFMP | human factors management plan |
HFMU | high-fidelity mockup |
HFO | high-frequency oscillator |
HFP | hardened focal plane |
HFRA | high-frequency recovery antenna |
HFRW | high-frequency resistance welding |
HFS | high-fidelity simulator |
HFS | horizontal flight simulator |
HFS | hyperfine structure |
HFT | horizontal flight test |
HFTE | human factors test and engineering |
HFTF | horizontal flight test facility |
HFTS | horizontal flight test simulator |
HFX | high-frequency transceiver |
HG | high gain |
HGA | high-gain antenna |
HGAS | high-gain antenna system |
HGDS | hazardous gas detection system |
HGM | hot-gas manifold |
HGS | hydrogen gas saver |
HGV | hydrogen gas valve |
HGVT | horizontal ground vibration test |
HH | handhold |
HHMU | hand-held maneuvering unit |
HI | Honeywell, Incorporated |
HIAD | Handbook of Information for Aircraft Designers |
HIAD | High-Altitude Defense Program |
HIBREL | high-brightness relay |
HIC | hardware integration contractor |
HICAMP | Highly Calibrated Airborne Measurements Program |
HID | HIM interface distributor |
HID | hardware interface device |
HIGED | Handbook of Instructions for Ground Equipment Designers |
HIL | hardware in loop |
HIL | human in the loop |
HILS | hardware-in-the-loop simulation |
HIM | hardware interface module |
HIP | hardware interface panel |
HIP | hardware interface processor |
HIP | hardware interface program |
HIP | hot isostatic press |
HIPO | hierarchical input-process output |
HIPO | hierarchy plus input, process, and output |
HITS | hierarchical integrated test simulator |
HITS | high-rate multiplexer input and output test system |
HIU | headset interface unit |
HIV | helium isolation valve |
HK | housekeeping |
HKV | hit-to-kill vehicle |
HL | hard line |
HL | heel line |
HL | high level |
HL | hinge line |
HL | hydrogen line |
HLAL | high-level assembler language |
HLC | hybrid load controller |
HLCM | high-level control module |
HLLV | heavy-lift launch vehicle |
HLTL | high-level test language |
HM | hinge mount |
HMA | hypergolic maintenance area |
HMB | hard mobile basing |
HMC | hybrid microcircuit |
HMCF | hypergolic maintenance and checkout facility |
HMD | head-mounted device |
HMD | helmet-mounted display |
HMF | health maintenance facility |
HMF | horizontal mating facility |
HMF | hypergolic maintenance facility (KSC) |
HML | hard mobile launcher |
HML | hardened mobile launcher |
HMO | health maintenance organization |
HMP | hydrazine monopropellant (RCS propellant) |
HMPAC | helmet-mounted multipurpose applications control |
HMS | hazard monitor system |
HMS | health monitoring system |
HMS | history memory system |
HMTT | Hurricane Mesa Test Track |
HMU | hardware mockup |
HMV | hydrogen manual valve |
HNCO | high-precision numerical-controlled oscillator |
HO | hydrogen-oxygen |
HOE | homing optical experiment |
HOE | homing overlay experiment |
HOFCO | horizontal functional checkout |
HOL | high-order language |
HOL | higher order language |
HOLAB | holographic laboratory brassboard |
HOLC | high-order language computer |
HOS | high-order software |
HOS | hybrid operating system |
HOSC | Huntsville Operations Support Center |
HOST | hardened optical sensor test bed |
HOW | handover word |
HP | Hewlett-Packard |
HP | handling procedure |
HP | high pass |
HP | high pressure |
HP | horsepower |
HP | hydrogen purge |
HP | perigee altitude |
HP | pressure altitude |
HPA | handling and positioning aid |
HPA | high-power amplifier |
HPA | high-power antenna |
HPAU | high-power amplifier unit |
HPBRM | high payload baseline reference mission |
HPBW | half-power beam width |
HPC | corrected pressure altitude |
HPF | Horizontal Processing Facility |
HPF | highest probable frequency |
HPFT | high-pressure fuel turbopump |
HPFTP | high-pressure fuel turbopump |
HPG | high-pressure gas |
HPGS | high-pressure gas system |
HPI | high-performance insulation |
HPICS | heat pipe instrumentation and control system |
HPM | Harvard Project Manager |
HPM | high-performance motor |
HPM | high-power microwave |
HPOL | High-Power Optics Laboratory |
HPOP | high-pressure oxidizer pump |
HPOT | high-pressure oxidizer turbopump |
HPOTP | high-pressure oxidizer turbopump |
HPPF | Horizontal Payloads Processing Facility |
HPR | hydrogen pressure regulator |
HPRV | hydrogen pressure relief valve |
HPS | hydraulic power system |
HPT | high-pressure test |
HPU | high-power unit |
HPU | hydraulic power unit |
HPU | hydraulic propulsion unit |
HPU | uncorrected pressure altitude |
HPV | high-pressure valve |
HQ | headquarters |
HQR | handling qualities rating (Cooper-Harper) |
HR | heat-resistant |
HR | historical record |
HR | hydrogen relief |
HR&T | heat rejection and transport |
HRAA | high-rate acquisition assembly |
HRC | Hasselblad reflex camera |
HRD | high-rate dosimeter |
HRDA | high-rate data assembly |
HRDM | high-rate demultiplexer |
HRDR | high-rate digital recorder |
HRE | hardware reuse evaluation |
HRG | hemispherical resonating gyro |
HRIR | high-resolution infrared radiometer |
HRL | horizontal reference line |
HRM | hand-held radiation meter |
HRM | high-rate multiplexer |
HRMA | high-resolution mirror assembly |
HRPS | hazard reduction precedence sequence |
HRSI | high-temperature reusable surface insulation |
HRSO | high-resolution solar observatory |
HRTS | HR&T system |
HS | hard silo |
HS | heat shield |
HS | heat suppression |
HS | high speed |
HS | horizon sensor |
HS | hot short |
HS | hydrogen sulfide |
HSA | heat shield abort |
HSB | heat shield boost |
HSC | hardware and software coordination |
HSC | hierarchical storage controller |
HSC | house spacecraft |
HSCS | high-speed communications subsystem |
HSCU | hydraulic supply and checkout unit |
HSD | Hamilton Standard Division |
HSD | high-speed data |
HSD | high-speed device |
HSD | horizontal situation display |
HSDL | high-speed data line |
HSE | heat shield entry |
HSF | Hypergolic Servicing Facility |
HSG | high sustained g's (acceleration) |
HSG | high-speed gear |
HSI | horizontal situation indicator |
HSIG | hermetically sealed integrating gyroscope |
HSK | horizontal sling kit |
HSL | Hardware Simulation Laboratory |
HSP | high-speed printer |
HSR | hardware status register |
HSR | heat-shield recovery |
HSR | high speed reader |
HSRV | heat-source reentry vehicle |
HSS | high stress/strain |
HSSM | hardened space sensor model |
HST | Hubble Space Telescope |
HSTF | Hypergolic System Test Facility |
HSU | helium service unit |
HSV | hypersonic vehicle |
HT | Hadamard transform |
HT | heat transfer |
HT | heat treatment |
HT | heat-treat |
HT | high technology |
HTC | high-temperature carbon |
HTC | hybrid technology computer |
HTE | hazardous top-level event |
HTLL | high-test-level language |
HTM | high-throughput mission |
HTO | horizontal takeoff |
HTP | hydroxyl terminated propellant |
HTPB | hydroxyl terminated polybutylene |
HTPB | hydroxyl terminator polybutadiene |
HTS | Hawaii tracking station |
HTS | heat transfer system |
HTS | heat transport section |
HUD | head-up display |
HUL | hardware utilization list |
HULL | hardware utilization and location list |
HUT | hard upper torso |
HV | high velocity |
HV | high voltage |
HV | hydrogen vent |
HVAC | heating, ventilation, and air conditioning |
HVDS | hazardous vapor detection system |
HVE | high-voltage electronics |
HVI | high-velocity impact |
HVM | hydraulic valve module |
HVM | hypervelocity missile |
HVPS | high-voltage power supply |
HVSF | Honeywell Verification Simulation Facility |
HVSL | holidays, vacation, and sick leave |
HW | half word |
HW | hardware |
HW | head wind |
HW | heavyweight |
HW | hot wire |
HW/SW | hardware/software |
HWCI | hardware configuration item |
HWIL | hardware in loop |
HWT | hypersonic wind tunnel |
HX | heat exchanger |
HYDAC | hybrid digital-analog computer |
HYPACE | hybrid programmable attitude control electronics |
HYSAT | hybrid satellite |
HYSAT | hybrid sensor experimental satellite |
HeG | helium gauge |
HeGV | helium gauge valve |
HeMV | helium manual valve |
HgCdTe | mercury-cadmium-telluride |
HiRAP | high-resolution accelerometer package |
Hz | hertz (cycles per second) |