pressure altitude


pressure altitude
An atmospheric pressure expressed in terms of altitude which corresponds to that pressure in the standard atmosphere (ICAO). It is the height of an aircraft as measured from an assumed sea level atmospheric pressure level of 1013.2 hectopascals (hPa) or 29.92 of mercury (Hg). This is used to indicate flight levels and as a common setting for the cruising level. When aircraft are flying at a given pressure altitude, their height above mean sea level is not constant; it varies depending on the variation of pressure prevalent at the height from the standard pressure. See absolute altimeter.

Aviation dictionary. 2014.

Look at other dictionaries:

  • Pressure altitude — In aviation, pressure altitude is the indicated altitude when an altimeter is set to an agreed baseline pressure setting. This setting 101,325 Pa, equivalent to 1013.25 millibar (or hectopascals), or 29.92 inches Hg is equivalent to the air… …   Wikipedia

  • pressure altitude — noun : the altitude corresponding to a given pressure in a standard atmosphere * * * Meteorol. the altitude for a given pressure in a standard atmosphere, such as that registered by a pressure altimeter. * * * pressure altitude noun (aeronautics) …   Useful english dictionary

  • pressure-altitude — barometrinis lygis statusas T sritis Gynyba apibrėžtis Atmosferos slėgis, atitinkantis tam tikrą aukštį standartinės atmosferos sąlygomis. atitikmenys: angl. pressure altitude pranc. altitude pression ryšiai: žiūrėk – absoliutusis lygis …   NATO terminų aiškinamasis žodynas

  • pressure altitude — An atmospheric pressure expressed in terms of altitude which corresponds to that pressure in the standard atmosphere. See also altitude …   Military dictionary

  • pressure altitude — Meteorol. the altitude for a given pressure in a standard atmosphere, such as that registered by a pressure altimeter. * * * …   Universalium

  • Altitude — For other uses, see Altitude (disambiguation). Not to be confused with Attitude. Altitude or height is defined based on the context in which it is used (aviation, geometry, geographical survey, sport, and more). As a general definition, altitude… …   Wikipedia

  • altitude datum — The arbitrary level from which vertical displacement is measured. The datum for height measurement is the terrain directly below the aircraft or some specified datum; for pressure altitude, the level at which the atmospheric pressure is 29.92… …   Military dictionary

  • altitude — i. The vertical distance of a level, a point, or an object considered as a point, measured from mean sea level (ICAO). In the case of aircraft in flight, it is normally expressed in flight levels or hundreds of feet. For example, an aircraft… …   Aviation dictionary

  • altitude datum — The arbitrary level from which vertical displacement is measured. The datum for height measurement is the terrain directly below the aircraft or some specified datum; for pressure altitude, the level at which the atmospheric pressure is 1013.2… …   Aviation dictionary

  • altitude — The vertical distance of a level, a point or an object considered as a point, measured from mean sea level. See also density altitude; drop altitude; elevation; minimum safe altitude; pressure altitude; transition altitude; true altitude …   Military dictionary


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