vertical speed indicator

A flight instrument that indicates the rate of climb or descent or the zero, or level, position at 9 o’clock. The VSI is a sensitive pressure gauge that senses the rate of change of static pressure. Atmospheric pressure is led directly into an aneroid capsule or a diaphragm contained within the case of the instrument. Air is permitted to leak at a relatively slow rate through a capillary tube into the casing. The difference between the quick change in pressure within the aneroid capsule and the relatively slow rate at which this pressure is equalized within the case causes the capsule to expand or contract. This movement is magnified and indicated on the dial through a system of gearing. See also instant rate of climb indicator.

Aviation dictionary. 2014.

Look at other dictionaries:

  • Vertical Speed Indicator — Dieser Artikel beschreibt das Messgerät. Der MB Transporter Vario steht unter Mercedes Benz T2. Die als Variometer bezeichneten veränderlichen Induktivitäten sind unter Spule (Elektrotechnik) beschrieben. Einfaches Variometer aus dem Sportbereich …   Deutsch Wikipedia

  • vertical speed indicator — stačiojo greičio rodytuvas statusas T sritis Standartizacija ir metrologija apibrėžtis Aviacinis įtaisas, rodantis stačiąjį orlaivio kilimo ar leidimosi greičio sandą. atitikmenys: angl. rate of climb indicator; vertical speed indicator vok.… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • vertical speed indicator — vertikaliojo greičio rodytuvas statusas T sritis Gynyba apibrėžtis Prietaisas, rodantis aukštėjimo arba žemėjimo greitį. atitikmenys: angl. vertical speed indicator pranc. indicateur de vitesse verticale ryšiai: siauresnis terminas – barometrinis …   NATO terminų aiškinamasis žodynas

  • vertical speed indicator — device used to measure the speed of a moving body …   English contemporary dictionary

  • barometric vertical speed indicator — barometrinis vertikaliojo greičio rodytuvas statusas T sritis Gynyba apibrėžtis Prietaisas, kuris rodo vertikalųjį orlaivio greitį, nustatomą pagal statinio slėgio pasikeitimą. atitikmenys: angl. barometric vertical speed indicator pranc.… …   NATO terminų aiškinamasis žodynas

  • instantaneous vertical speed indicator — momentinis vertikaliojo greičio rodytuvas statusas T sritis Gynyba apibrėžtis Prietaisas, kuris rodo vertikalųjį orlaivio greitį, nustatomą pagal greitinimo ir barometrinių šaltinių derinį. atitikmenys: angl. instantaneous vertical speed… …   NATO terminų aiškinamasis žodynas

  • Vertical Velocity Indicator — Dieser Artikel beschreibt das Messgerät. Der MB Transporter Vario steht unter Mercedes Benz T2. Die als Variometer bezeichneten veränderlichen Induktivitäten sind unter Spule (Elektrotechnik) beschrieben. Einfaches Variometer aus dem Sportbereich …   Deutsch Wikipedia

  • Airspeed indicator — The airspeed indicator or airspeed gauge is an instrument used in an aircraft to display the craft s airspeed, typically in knots, to the pilot. Markings Light aircraft Airspeed indicator markings use a set of standardized colored bands and lines …   Wikipedia

  • Course Deviation Indicator — (CDI) is an avionics instrument used in aircraft navigation to determine an aircraft s lateral position in relation to a track. If the location of the aircraft is to the left of course, the needle deflects to the right, and vice versa. Contents 1 …   Wikipedia

  • instant rate of climb indicator — A form of vertical speed indicator that uses internal accelerometer type air pumps to overcome the inherent lag of a conventional VSI (vertical speed indicator). This instrument thus indicates a more instantaneous indication of vertical speed …   Aviation dictionary

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