Definition of Ivsi
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Ivsi Definition from Science & Technology Dictionaries & Glossaries
Instantaneous Vertical Speed Indicator
Aviation Acronyms and Terms
Instantaneous vertical speed indicator.
Ivsi Definition from Encyclopedia Dictionaries & Glossaries
English Wikipedia - The Free Encyclopedia
A variometer (also known as a rate of climb and descent Indicator (RCDI), rate-of-climb indicator, vertical speed indicator (VSI), or vertical velocity indicator (VVI)) is one of the flight instruments in an aircraft used to inform the pilot of the near instantaneous (rather than averaged) rate of descent or climb. It can be calibrated in knots, feet per minute (101.333 ft/min = 1 kn) or metres per second, depending on country and type of aircraft.
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