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

• A. Aerodynamic balance and controllability
• B. Structural integrity
• C. Drag and fuel efficiency
• D. Weight distribution

Answer: (A)

The center of pressure is the point at which the wing’s lift can be considered to act. As the angle of attack changes, the pressure distribution over the wing shifts, so the center of pressure moves along the wing. That shift changes the pitching moment about the aircraft’s center of gravity, which affects how the airplane tends to nose up or down and how much elevator or trim is needed to hold a steady attitude. In other words, changes in the center of pressure influence aerodynamic balance (how the aircraft stabilizes and trims) and controllability (how easily you can maneuver the aircraft with control surfaces). Structural integrity and weight distribution are set by different factors and aren’t directly determined by where the lift acts, and while drag and fuel efficiency are impacted by many variables, the immediate and primary effect of CP movement is on balance and control.