ALT has various meanings in the Scientific & Educational category. Discover the full forms, definitions, and usage contexts of ALT in Scientific & Educational.
Elevation as measured in relationship to the earth's surface to sea level. OR Height OR The vertical distance between the airplane and the ground. OR The height of an object, like an airplane, above sea level or above the earth's surface. OR Height, usually with respect to the terrain below (radar altitude, feet above closest dirt) or fixed earth reference (barometric altitude, feet above mean sea level); Symbols: h; Typical Units: ft; Dimensions: Length; or angle of a celestial object above the horizon.
Scientific & EducationalAn onboard radar for determining the altitude of an aircraft above an underlying surface.
Scientific & EducationalAirport indicated on a flight plan where it is possible to divert the aircraft from its scheduled destination (in case of bad weather or any other major situation).
Scientific & EducationalAn instrument used to measure the height above a reference point, such as ground or sea level. An instrument, most usually an aneroid barometer, calibrated in meters and/or feet, to indicate an aircraft's height. A device that measures altitude above the surface of a planet or moon. Spacecraft altimeters work by timing the round trip of radio signals bounced off the surface.
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