What is typically affected when the angle of attack of an airfoil is increased?

Increasing the angle of attack of an airfoil primarily affects its lifting capacity. As the angle of attack rises, the airfoil creates a greater difference in air pressure between the upper and lower surfaces. This difference in pressure is what generates lift.

When the angle of attack is increased within certain limits, the lift produced increases, allowing the aircraft to ascend or maintain altitude as speed decreases or when climbing. However, it is important to note that there is a critical angle of attack, beyond which the airflow can separate from the wing and lead to a stall, drastically decreasing lift.

Understanding the relationship between angle of attack and lift is critical in aerodynamics, as it helps pilots manage their aircraft's performance during different phases of flight, ensuring they operate within safe and efficient parameters.