The point where the resultant of all aerodynamic forces acting on an airfoil intersects the chord line is known as?

The point where the resultant of all aerodynamic forces acting on an airfoil intersects the chord line is known as?

• A. Center of Pressure
• B. Center of Gravity
• C. Blade Twist
• D. Chip Detector

Answer: (A)

The center of pressure is the point on the airfoil where the total aerodynamic force can be considered to act. This single resultant force intersects the chord line at that point, and its location depends on the airfoil shape and the angle of attack (and other conditions). As you change the angle of attack, the lift distribution changes, so the center of pressure moves along the chord. This is different from the center of gravity, which is the aircraft’s weight distribution, and from terms like blade twist or chip detector, which refer to other concepts entirely. So, the best answer is the center of pressure.

The center of pressure is the point on the airfoil where the total aerodynamic force can be considered to act. This single resultant force intersects the chord line at that point, and its location depends on the airfoil shape and the angle of attack (and other conditions). As you change the angle of attack, the lift distribution changes, so the center of pressure moves along the chord.

This is different from the center of gravity, which is the aircraft’s weight distribution, and from terms like blade twist or chip detector, which refer to other concepts entirely.

So, the best answer is the center of pressure.