Work axial flow "Micro Cooling Fan" blade wing aircraft similar. However, the role of the latter is to lift up on the wing and supports the weight of the aircraft, while the axial fan is fixed to the position and movement of air. Change the blade angle or pitch is one of the main advantages of axial fans. Small blade pitch angles produce lower flows while increasing the pitch can generate higher traffic. "Micro Cooling Fan" cross-section generally airfoil. Blade position can be fixed, to be rotated about its longitudinal axis. Blade pitch angle or blade and the air flow can not be adjusted or adjustable. Energy when the "Micro Cooling Fan" impeller rotates, the gas from the inlet axially into the impeller, the impeller blades pushed by leaving the gas is raised, and then flows into the vanes. Vanes will deflect airflow into axial flow, while the gas is introduced into the diffuser tube, and further the gas kinetic energy is converted to pressure energy, and finally to introduce the work of the pipeline.