If the CG is located at 25% of the mean aerodynamic chord, where will the center of lift typically be?

The center of lift is typically located behind the center of gravity (CG) when the CG is situated at 25% of the mean aerodynamic chord (MAC). This positioning is crucial for the stability and control of the aircraft. The aerodynamic forces acting on the wings generate lift, and for most aircraft designs, particularly those with a conventional layout, the center of lift will be behind the CG to allow for proper stability.

In basic terms, when the aircraft is in flight, the lift generated acts upward through the center of lift while the weight acts downward through the CG. When the center of lift is behind the CG, it creates a moment that tends to pitch the nose of the aircraft upwards. This configuration is typically desirable, as it helps to maintain stability due to the restoring moment produced when the aircraft experiences disturbances from its flight path.

The concept of stability is fundamental in understanding the relationship between the CG and the center of lift. If the CG is too far forward, it could lead to a nose-heavy condition, making the airplane difficult to raise and reducing the effectiveness of control surfaces. Conversely, a CG located at 25% MAC suggests a well-balanced design, conducive to stability, with the ability to respond correctly to pilot inputs.