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Welcome to the Dauntless Aviation Glossary!
At Dauntless, our editorial staff maintains the web's largest unified glossary of aviation terms. This glossary is built from a combination of official, quasi-official,
and proprietary sources (including original material that we develop oursselves). Uniquely, we often provide multiple definitions of a given term so that you can find that which best applies
to you. In order to maximize your learning efficiency, this glossary (and similar ones for our international users) is incresingly fully integrated into our aviation learning apps, including
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Vertical Speed Indicator
Vertical Speed Indicator | | Vertical Speed Indicator (VSI). A panel instrument that gauges rate of climb or descent in feet-per-minute (fpm). Also Rate Of Climb Indicator. | source: FAA Aerosense Glossary |
| | Vertical Speed Indicator (VSI): An instrument that uses static pressure to display a rate of climb or descent in feet per minute. The VSI can also sometimes be called a vertical velocity indicator (VVI). | source: FAA Airplane Flying Handbook (FAA-H-8083-3A) |
| | An instrument that continuously records the rate at which an aircraft climbs or descends. Usually measured in FPM. A required instrument in a balloon. | source: FAA Balloon Flying Handbook (FAA-H-8083-11) |
| | Vertical Speed Indicator (VSI): A rate-of-pressure change instrument that gives an indication of any deviation from a constant pressure level. | source: FAA Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25A) |
| | Vertical speed indicator (VSI): An instrument that uses static pressure to display a rate of climb or descent in feet per minute. The VSI can also sometimes be called a vertical velocity indicator (VVI). | source: FAA Weight Shift Control Handbook (FAA-H-8083-5) |
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Disclaimer: While this glossary in most cases is likely to be highly accurate and useful, sometimes, for any number of editorial, transcription, technical, and other reasons, it might not be.
Additionally, as somtimes you may have found yourself brought to this page through an automated term matching system, you may find definitions here that do not match the cotext or application in which
you saw the original term. Please use your good judgement when using this resource.
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