vertical speed indicator

An instrument which displays rate of climb or descent. a. Barometric--An instrument which displays the apparent vertical speed of the aircraft as derived from the rate of change of static pressure. b. Instantaneous--An instrument which displays the vertical speed of the aircraft as derived from a combination of accelerometric and barometric sources.

vertical speed indicator

[′vərd·ə·kəl ¦spēd ‚in·də‚kād·ər] (aerospace engineering) rate-of-climb indicator

vertical speed indicator (VSI)

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.

单词	vertical speed indicator
释义	vertical speed indicator vertical speed indicator An instrument which displays rate of climb or descent. a. Barometric--An instrument which displays the apparent vertical speed of the aircraft as derived from the rate of change of static pressure. b. Instantaneous--An instrument which displays the vertical speed of the aircraft as derived from a combination of accelerometric and barometric sources. vertical speed indicator vertical speed indicator [′vərd·ə·kəl ¦spēd ‚in·də‚kād·ər] (aerospace engineering) rate-of-climb indicator vertical speed indicator (VSI) 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. AcronymsSeevery seriously illThesaurusSeevariometer
随便看	national federation of labor unions national federation of liberal women national federation of licensed practical nurses national federation of local cable programmers national federation of meat and food traders national federation of medical insurance national federation of modern language teachers associations national federation of mortgage professionals national federation of motorcycle clubs of the philippines national federation of municipal analysts national federation of music clubs national federation of music societies national federation of neurolinguistic programming national federation of neurolinguistic psychology national federation of newspaper employees national federation of nurses national federation of nurses' unions national federation of officers for life national federation of pachyderm clubs national federation of pakistani-canadians national federation of paralegal associations obvious pearl evolutionary algorithm library obvious pile of rocks obvious (song) obvme