What is the function of stator blades in the compressor section of an axial-flow turbine engine?

The function of stator blades in the compressor section of an axial-flow turbine engine is to decrease air velocity and prevent swirling. This is crucial for maintaining an efficient and smooth airflow through the engine. As air flows through the compressor, it passes over the rotating rotor blades first, where its pressure is increased and its velocity can increase as well. However, as the air continues through the compressor, it reaches the stator blades.

The stator blades are stationary components positioned downstream of the rotor blades, designed to convert the kinetic energy from the high-velocity air into increased pressure while stabilizing the flow. By decreasing the air velocity and preventing swirling, stator blades organize the airflow effectively before it enters the next stage of rotors or combustion chamber. This process is essential for maximizing the overall efficiency of the engine and ensuring that the airflow is directed properly through each stage of the compressor.

In contrast, the other options do not accurately reflect the primary roles of the stator blades. While they assist in improving overall performance, their main purpose revolves around managing airflow dynamics rather than directly enhancing fuel efficiency or maximizing airflow at all speeds.