What is the primary reason for increasing the angle of attack during a stall?

Increasing the angle of attack during a stall is primarily intended to enhance lift. When an airplane is close to or at stall conditions, the airflow over the wings begins to separate, resulting in a loss of lift. By increasing the angle of attack, the pilot aims to re-engage the airflow over the wings, thereby improving lift as long as the angle does not exceed the critical angle of attack where stall occurs. This understanding is crucial, as maintaining or enhancing lift is essential for recovering from a stall and ensuring the aircraft can regain controlled flight.

While altitude gain and stabilization of descent can be factors in certain situations, they are not the direct objectives in increasing the angle of attack during a stall. Preventing loss of control is also vital in piloting, but the primary mechanical response to a stall emphasizing increased angle of attack is to recover lift.