The Vertical Speed Indicator (VSI) in aircraft design is an instrument used to measure and display an aircraft’s rate of climb or descent. It provides information about the aircraft’s vertical velocity, which is its speed of ascent or descent. Here’s the definition and SI unit for the Vertical Speed Indicator in aircraft design:
The formula to calculate vertical speed (rate of climb or descent) is straightforward:
- Vertical Speed (VSI) is the rate of climb or descent, typically measured in feet per minute (ft/min) or meters per second (m/s).
- Change in Altitude is the difference in altitude between two points in time, typically measured in feet (ft) or meters (m).
- Time is the duration over which the altitude change occurs, typically measured in minutes or seconds.