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HANGER
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An enclosed structure for housing aircraft. Originated with the floating homes of the original German Zeppelins in which they were "hung" from cables.
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HELICOPTER
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A wingless aircraft acquiring its lift from revolving blades driven by an engine about a near-vertical axis. A Rotorcraft acquiring its primary motion from engine-driven rotors that accelerate the air downward, providing a reactive lift force, or accelerate the air at an angle to the vertical, providing lift and thrust.
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HF
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High-frequency band, used for long-range radio communications in the 3-30 MHz range.
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HERTZ
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Standard radio equivalent of frequency in cycles per second.
eg. kHz and MHz.
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HORSEPOWER
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The motive energy required to raise one foot in one second.
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IATA
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International Air Transport Association.
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ICAO
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International Civil Aviation Organisation.
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IGS
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Instrument guidance system.
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ILS
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Instrument landing system. The approach aid employing two radio beams to provide pilots with vertical and horizontal guidance during the landing approach. The localiser provides azimuth guidance, while the glide-slope defines the correct vertical descent profile. Marker beacons and high intensity runways lights are also part of the
ILS.
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INTERLINE CONNECTIONS
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Change of aircraft and airlines
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ISA
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International Standard Atmosphere -- a set of standard conditions or temperature and pressure which serve as a basis for comparison.
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KHz
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Kilohertz, the frequency of a radio carrier wave measured in thousands of cycles per second. 1 kHz = 1,000 Hertz.
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KNOT (kt)
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One nautical mile per hour (never one knot per hour), the standard unit of aviation speed measurement. One knot equals 1.1515 mph; one nautical mile equals 6,080 feet per hour.
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kW - Kilowatt |
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