The stators are stationary blades attached to the outer casing of the axial flow compressor. When the air contacts the stators, it reduces the velocity and converts part of the kinetic energy into static pressure and heat. The mass airflow is then directed to the next set of rotating blades. This process is then repeated through each stage until the desire pressure is obtained.
The apparent contradiction in the operation of the axial flow compressor is that high pressure is generated, although the overall divergent shape would appear to cause lower output pressure. Output pressure is increased by divergence in each static interstage section. Rotating compressor blades between each static stage increase the velocity that is lost by injecting energy.