Private Pilot License (PPL) Aerodynamics Practice Exam

What does increased drag indicate as an aircraft maneuvers during flight?

1. Increase in speed

2. Decrease in altitude

3. Resistance to forward motion

4. Increased thrust availability

The correct answer is: Resistance to forward motion

Increased drag during flight indicates that there is greater resistance to the aircraft's forward motion. Drag is a fundamental aerodynamic force that opposes the aircraft's propulsion, and it can arise from various factors such as increased speed, changes in aircraft configuration (like deploying flaps), or variations in air density. As an aircraft maneuvers, particularly during turns or climbs, the drag will often increase due to changes in the angle of attack or the aircraft's surface area exposed to airflow. As a result, pilots must counteract this increased drag with additional thrust to maintain speed and altitude. Understanding drag is crucial in managing an aircraft's performance, especially during critical phases of flight. The need for increased thrust to overcome higher drag is a key consideration in flight operations, affecting fuel efficiency and climb performance.