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In aviation, 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 rate of descent or climb. [1]
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The machmeter is used to show the ratio of true airspeed in relation to the speed of sound. Most supersonic aircraft are limited as to the maximum Mach number they can fly, which is known as the "Mach limit". The Mach number is displayed on a machmeter as a decimal fraction. [4] A vertical speed indicator
In aeronautics, the rate of climb (RoC) is an aircraft's vertical speed, that is the positive or negative rate of altitude change with respect to time. [1] In most ICAO member countries, even in otherwise metric countries, this is usually expressed in feet per minute (ft/min); elsewhere, it is commonly expressed in metres per second (m/s).
Vertical shaft impactor, a type of impact crusher; Vertical speed indicator, an instrument in an aircraft monitoring rate of descent or climb; Very Short Introductions, a series of books published by Oxford University Press; Virtual Switching Instance, in VPLS; Voluntary Service International, the Irish branch of Service Civil International
The cockpit of a Slingsby T-67 Firefly two-seat light airplane.The flight instruments are visible on the left of the instrument panel. Flight instruments are the instruments in the cockpit of an aircraft that provide the pilot with data about the flight situation of that aircraft, such as altitude, airspeed, vertical speed, heading and much more other crucial information in flight.
vertical speed indicator: VSM Vertical separation limit VSO Stall speed in landing configuration VSV variable stator vane In a turbine engine VSWR Voltage–standing wave ratio VTA VFR terminal area chart [1] VTOL vertical take-off and landing [1] V/TRK Vertical track VVI vertical velocity indicator: Same as VSI VX Speed for best angle of climb VY
1. - nozzle position indicator [2] 2. Ookazahtel' Povorota – turn indicator [1] UPS Ookazahtel Polozheniya Stabilizahtora – tailplane incidence indicator [8] US 1. - radio receiver [5] 2. Ookazahtel' skorosti - combined airspeed indicator [2] UUAP Ukazatel Uglov Ataki i Peregruzki – combined AOA and g indicator [3] indicator [4] UUT