What type of propeller is described in the aircraft specifications?

The type of propeller described in the aircraft specifications as a fixed pitch propeller is designed with blades that maintain a constant angle of attack throughout their rotation. This means that the propeller cannot adjust its blade pitch in response to varying flight conditions. Fixed pitch propellers are simple in design and are typically lighter and less expensive than other types, such as variable or controllable pitch propellers.

In practice, a fixed pitch propeller provides good performance at a specific range of airspeeds and power settings, making it suitable for many general aviation aircraft. However, it may not be as efficient for a wide range of operating conditions because, unlike variable pitch propellers, it cannot optimize performance for climb, cruise, or descent phases of flight.

In contrast, variable pitch and controllable pitch propellers can change the blade angle during flight to optimize performance under different conditions, while a feathering propeller is specifically designed to reduce drag in the event of an engine failure by allowing the blades to turn edge-on to the relative wind.