Private Pilot Private Exam

During a climb after takeoff, which speed provides the greatest gain in altitude in the shortest distance?

1. Vx

2. Vy

3. Va

4. Vno

The correct answer is: Vx

The speed that provides the greatest gain in altitude in the shortest distance during a climb after takeoff is Vx, which is known as the "best angle of climb" speed. This speed is specifically designed to maximize altitude gain over the ground distance covered, making it particularly important for obstacle clearance. When flying at Vx, the aircraft climbs at a steeper angle than at any other speed, allowing the pilot to clear obstacles that are directly in front of the flight path more effectively. This characteristic is crucial during the initial climb phase, especially when dealing with terrain or obstacles near the runway. Vy, the "best rate of climb" speed, while important for overall altitude gain over time, prioritizes the vertical climb over horizontal distance. It may not be as effective for quickly gaining altitude when immediate clearance of obstacles is a factor. Va, which is the maneuvering speed, is a maximum speed for control and should not be routinely used for climbs. Vno is the maximum structural Cruising speed, not relevant in terms of climb efficiency. Understanding these speeds helps pilots make informed decisions based on their flight environment and needs during the climb phase.