In a coordinated turn with a constant angle of bank, what happens to the rate of turn as airspeed increases?

In a coordinated turn with a constant angle of bank, the rate of turn is inversely related to the airspeed of the aircraft. As airspeed increases, the turn radius increases, which inherently reduces the rate of turn. This occurs because a higher speed requires a greater centrifugal force to maintain the same turn angle, resulting in the aircraft turning more slowly around a larger radius.

In a coordinated turn, maintaining a consistent bank angle means that the lift vector is tilted, providing the necessary centripetal force to keep the aircraft turning. However, as airspeed increases, the additional lift generated needs to counteract both the weight and the increased horizontal component of lift due to the bank angle. Thus, if the angle of bank is kept constant and airspeed increases, the aircraft needs more distance to complete the turn, therefore effectively decreasing the rate of turn.

A deeper understanding of this principle illustrates why maintaining a constant angle of bank is critical for determining turn performance—speed management is crucial for pilots in both maneuvering and operational contexts.