FAA Ground School Practice Test

Changes in the center of pressure of a wing affect the aircraft's:

1. Speed and fuel consumption

2. Aerodynamic balance and controllability

3. Turbulence and drag

4. Pitch and roll rate

The correct answer is: Aerodynamic balance and controllability

When considering the center of pressure and its impact on aircraft performance, the correct response highlights how changes in the center of pressure influence aerodynamic balance and controllability. The center of pressure is the point where the total aerodynamic force is considered to act, and this location can shift with changes in angle of attack, airspeed, or other factors. When the center of pressure moves, it affects how the aircraft's lift and drag interact with its weight and any control surfaces, leading to variations in how easily the aircraft can be controlled by the pilot. For instance, if the center of pressure moves forward or backward, it can lead to changes in the aircraft's stability and the amount of control input required to maintain straight and level flight. This can significantly impact the handling characteristics of the aircraft, making it either more stable or more prone to turbulence, affecting overall controllability. A change in the center of pressure does not directly alter the aircraft's speed and fuel consumption, nor does it inherently affect turbulence and drag in a direct manner, though these factors may be related in broader terms. Additionally, while the center of pressure can have an indirect influence on the pitch and roll rates, its primary effect is more closely linked to aerodynamic balance and the degree of control a pilot