What is the Beta range of a propeller?

The Beta range of a propeller refers to the operational range of blade angles that allow for both fine pitch and reverse pitch settings, primarily used during ground operations. This range extends from the Flight Fine Pitch stop, where the blades are positioned for optimal lift and performance during flight, to the reverse pitch stop, where the blades are angled to produce thrust in the opposite direction.

Understanding this range is critical because it defines how a propeller can be adjusted for various operating conditions, particularly during taxiing, takeoff, and landing. The ability to move into reverse pitch is essential for improving the control of the aircraft on the ground and for reducing landing roll distances. This makes the correct answer particularly relevant in preciseness of aircraft handling and efficiency in operations. In contrast, the other options do not encompass the full operational capabilities associated with the Beta range, hence they are not accurate representations of what constitutes this range.