What is the relationship between load factor and stalling IAS?

The relationship between load factor and stalling indicated airspeed (IAS) is rooted in the principles of aerodynamics and aircraft performance. As the load factor increases, the angle of attack at which an aircraft stalls also increases. The stalling speed of an aircraft is a function of the load factor because the stall occurs when the lift generated by the wings is no longer enough to counteract the weight of the aircraft.

When an aircraft is in a turn or is experiencing a higher load factor, the effective weight of the aircraft increases due to the additional G-forces acting on it. This requires a higher angle of attack to generate enough lift to maintain level flight at that increased load factor. Consequently, to avoid stalling under these higher loads, the pilot must maintain a higher airspeed.

Thus, an increase in load factor raises the stalling IAS, meaning that pilots need to be more aware of their airspeed when flying in conditions where the aircraft could be subject to higher load factors, such as during maneuvers or turns. This understanding is critical for safe aircraft operation and avoiding unintentional stalls.