During a turn, what must be closely managed to prevent a stall?

In the context of aerodynamic principles and aircraft performance, managing airspeed during a turn is crucial to preventing a stall. When an aircraft is in a turn, it experiences increased load factor due to the need to maintain level flight. This additional load factor effectively increases the stall speed of the aircraft, meaning that the aircraft will require a higher airspeed to maintain controlled flight without stalling.

If the airspeed decreases significantly during a turn, particularly if the pilot does not compensate by adding back engine power or reducing the bank angle, there is a higher risk of the aircraft reaching its critical angle of attack before the stall speed is achieved. This is because the lift generated by the wings must counteract both the weight and the additional load factor. Therefore, maintaining adequate airspeed is vital in ensuring that the aircraft does not exceed its critical angle of attack, which directly prevents a stall condition.

Other factors like altitude, engine RPM, and wing loading also play important roles in aircraft performance and safety. However, during a turn, the critical aspect to focus on is the airspeed, as it directly correlates with the ability to maintain lift and prevent stalling maneuvering.