| NAV GLOSSARY CZ |
| Hranice |  Boundary
Roviny (bocní a výškové), které vymezují prostor odpovednosti urcitého stanovište ATC. |
| AIRCRAFT PERFORMANCE |
| HPC | Horizontal Plane Clearway
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| JEPPESEN JETPLAN |
| HDG | HEADING
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| HLD | HOLD
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| HSC | HIGH SPEED CRUISE
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| NAT CONCEPT |
| HF | High Frequency
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| ETOPS CANADA |
| HAA | Height Ab ove Airport
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| HAT | Height Above Threshold
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| HONEYWELL |
| HAI | Helicopter Association International
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| HERF | High-Energy Radio Frequency or High-Energy Radiated Fields: dense electromagnetic fields created by radio/TV transmitters -- possible source of interference for electronic instruments
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| HF | High Frequency: 3-30 MHz
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| HFDL | High Frequency Data Link
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| HIRF | High Intensity Radiated electromagnetic Frequencies (see also, HERF)
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| HMCDU | Hybrid Multifunction Control-Display Unit: (757/767)
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| HPA | High Power Amplifier - SATCOM component
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| HSI | Horizontal Situation Indicator
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| HUD | Head-up Display
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| HW | hardware
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| Hz | Hertz: cycles per second
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| HONEYWELL |
| HARS | High Altitude Route System
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| HCS | Host Computer System
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| HF | High Frequency
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| HIWAS | Hazardous Inflight Weather Advisory Service
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| HPA | High Power Amplifier
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| SAS DATALING SYSTEMS |
| Hermes | SAS´ ground based datalink processing system
|
| HF | High Frequency (short wave radio)
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| HFDL | HF Data Link
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| AVIONICS GLOSSARY |
| HDG SEL | Heading select
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| Heading | Direction on a compass that aircraft is pointed, measured with respect to true north or magnetic north, Symbols: psi, Typical Units: rad, deg,
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| Health | Equipment status
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| Hold | To maintain some aspect(s) of aircraft state, such as heading, airspeed, altitude, pitch
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| Hook | In the US Navy, a target cursor,
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| Hough | A standard model for computing earth data
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| HPF | High-pass filter
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| Hysteresis | A function in which the algorithm for computing output changes at defined events or thresholds, such that output follows one path as input increases and another path as input decreases, Hysteresis can be formalized: (0) at initialization, select algorithm-0 (1).if event-1 occurs, switch to algorithm-1 (2) if event-2 occurs, switch to algorithm-2 ... (N) if event-n occurs, switch to algorithm-n Frequently in avionics, hysteresis prevents a test from oscillating near the transition point due to noise. Implementation is usually: (0) at initialization, set y = 0 (1) if x sub c + h/2 le x, then set y = 1 (2) if x sub c - h/2 lt x lt x sub c + h/2, then let y retain its value (3) if x le x sub c - h/2, then set y = 0
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| GLOSSARTIST AVIATION GLOSSARY |
| Heading. | Direction on a compass that aircraft is pointed, measured with respect to true north or magnetic north Symbols: psi Typical Units: rad, deg
|
| Health. | Equipment status
|
| Hold. | To maintain some aspect(s) of aircraft state, such as heading, airspeed, altitude, pitch
|
| Hook. | In the US Navy, a target cursor
|
| Hough. | A standard model for computing earth data
|
| HPF. | High-pass filter
|
| Hysteresis. | A function in which the algorithm for computing output changes at defined events or thresholds, such that output follows one path as input increases and another path as input decreases Hysteresis can be formalized: (0) at initialization, select algorithm-0 (1).if event-1 occurs, switch to algorithm-1 (2) if event-2 occurs, switch to algorithm-2 ... (N) if event-n occurs, switch to algorithm-n Frequently in avionics, hysteresis prevents a test from oscillating near the transition point due to noise. Implementation is usually: (0) at initialization, set y = 0 (1) if x sub c + h/2 le x, then set y = 1 (2) if x sub c - h/2 lt x lt x sub c + h/2, then let y retain its value (3) if x le x sub c - h/2, then set y = 0
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| APS AERO CHART |
| H | Enroute High Altitude Chart (followed by identification #)
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| H+ | Hours or hours plus... minutes past the hour
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| H24 | contionuous operation
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| HA | Haiti (Caribbean nation sharing large island with Dominican Republic)
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| HAA | Height Above Airport/Aerodrome, also, High Angle of Attack
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| HAL | Height above Landing Area
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| HALS | Heliport Approach Lighting System
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| HAR | Height Above Runway
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aero glossary
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