How can an airplane be made more stable in pitch?

An airplane can be made more stable in pitch by moving the center of gravity (CG) forward. A forward CG enhances pitch stability because it increases the moment arm of the lift created by the wings relative to the center of gravity. When the CG is forward, any nose-up pitch tendency is countered by a restoring moment generated by the aerodynamic forces acting on the tail. This makes the aircraft more compliant to maintaining a level flight attitude after any disturbance.

In contrast, if the CG is too far aft, the aircraft can become unstable in pitch, leading to difficulty in controlling the nose position during flight and potentially resulting in uncontrollable situations. Thus, proper CG placement is vital for ensuring good handling characteristics and stability.