Federal Aviation Regulations Practice Test

After takeoff, which airspeed helps a pilot achieve the most altitude in the shortest time?

1. Vx

2. Vy

3. Vs

4. VNO

The correct answer is: Vy

Vy, or the best rate of climb speed, is the airspeed that allows a pilot to gain the most altitude in the shortest amount of time after takeoff. At this speed, the aircraft achieves the optimal climb gradient, maximizing vertical performance. This is particularly important immediately after takeoff when the goal is to reach a safe altitude as quickly as possible. Vx, known as the best angle of climb speed, is designed to give a pilot the greatest altitude gain over a specific horizontal distance, making it ideal for obstacle clearance rather than time efficiency in climb. Vs represents stalling speed in a specified configuration and is not relevant to climbing performance, while VNO is the maximum structural cruising speed and is more about safe maneuvering rather than enhancing climb efficiency. Understanding these differences helps pilots make informed decisions about climb performance based on their specific operational needs.