Drone Pilot Practice Exam

When is the angle of attack critical to monitor for UAS pilots?

1. When executing takeoff

2. During descent

3. When executing turns

4. When near stalling conditions

The correct answer is: When near stalling conditions

Monitoring the angle of attack is essential for UAS pilots, particularly when near stalling conditions. The angle of attack refers to the angle between the chord line of the wing and the direction of the oncoming air. As this angle increases, so does the risk of the aircraft reaching its critical angle of attack, where the airflow begins to separate from the wing surface, leading to a stall. In situations that approach stalling conditions, understanding and managing the angle of attack is crucial to prevent loss of control. When a drone approaches its critical angle of attack, the pilot must respond appropriately by adjusting the pitch to reduce the angle and restore smooth airflow over the wings, thus maintaining lift and control. While the angle of attack is also important during takeoff, descent, and turns—where it influences lift and maneuverability—the most critical monitoring is required when the aircraft is nearing stalling conditions because this directly impacts the safety and stability of the flight. In those moments, a stall could occur suddenly, leading to a potential crash if not properly managed.