What does Vy indicate in terms of aircraft performance?

Vy is defined as the speed that produces the greatest altitude gain per unit of time. This performance parameter is crucial during climb phases of flight, especially when an aircraft needs to clear obstacles shortly after takeoff. Achieving Vy allows the pilot to reach an altitude as quickly as possible, optimizing the climb rate.

This speed is vital for safety, particularly in situations where terrain or obstacles are present. Flying at Vy ensures that the aircraft is maintaining an optimal climb rate, which is important for ensuring the safety and efficiency of the flight. Understanding and utilizing this speed is an essential aspect of flight training and operational flying.