What is the purpose of AOA (Angle of Attack) indicators?

The purpose of Angle of Attack (AOA) indicators is to provide pilots with critical information regarding the angle of the wing in relation to the oncoming air. This measurement is essential because it helps pilots understand the aerodynamic performance of the aircraft. The angle of attack is the angle between the chord line of the wing and the direction of the oncoming air.

When the angle of attack increases, the lift generated by the wing increases until a critical point is reached, which can lead to a stall if not managed properly. Therefore, AOA indicators are vital for maintaining control of the aircraft, particularly during critical phases of flight like takeoff and landing. Pilots can use this information to adjust their flight maneuvers, ensuring they operate within safe parameters and optimize the performance of the aircraft.

Other options reference different flight parameters; for instance, measuring altitude or speed is different from understanding the aerodynamic position of the wings. Similarly, fuel efficiency is related to overall aircraft performance but is not directly linked to the AOA itself. Thus, the focus of AOA indicators is specifically on the relationship between the wing and the airflow.