Final answer:
To prevent the airplane from rolling in the stall, the pilot needs to take certain actions such as applying ailerons, reducing the angle of attack, and using the elevator to control pitch.
Step-by-step explanation:
To prevent the airplane from rolling in the stall, the pilot needs to take certain actions. One important action is to apply ailerons, which are control surfaces on the wings that can be moved up or down. By moving the aileron on one wing down and the aileron on the other wing up, the pilot can create a differential lift force. This means that one wing will have more lift than the other, allowing the airplane to roll in the opposite direction of the stalled wing. The pilot can also use the rudder to yaw the airplane and counteract the rolling motion.
Another important action is to reduce the angle of attack, which is the angle between the wing chord line and the oncoming airflow. When the angle of attack becomes too large, it can lead to a stall, which is a loss of lift due to the separation of airflow over the wing. By lowering the angle of attack, the pilot can prevent the airplane from stalling and rolling.
In addition, the pilot can also use the elevator to control the pitch of the airplane. By adjusting the elevator, the pilot can change the angle of the airplane's nose. This can help to maintain the correct balance of lift and weight, preventing the airplane from rolling in the stall.