Plain English Meaning
The speed that gets you to a higher altitude in the least amount of time. Fly at VY when you want to climb as quickly as possible measured by the clock.
Full Definition
The airspeed at which an airplane gains the most altitude in the shortest amount of time. At VY, the difference between the power available and the power required for level flight is greatest, producing the maximum rate of climb in feet per minute.
Context Anchor
Pilots see VY in the aircraft handbook, on performance charts, and during climb procedures after takeoff, go-around, or from an .