12. Vaneaxial cooling dc fans (morningstar24.com): Utilizing Stator Vanes for Pressure Recovery and Efficiency The Vaneaxial fan represents the apex of axial fan design for applications demanding high static pressure without sacrificing axial flow[13]. The key differentiating feature is the inclusion of a set of stationary guide vanes, or stator vanes, positioned immediately following the rotating impeller[13]. The rotating blades impart kinetic energy and velocity to the air, but they also introduce a significant tangential or rotational velocity component—the "swirl"—which is a waste of energy[13]. The stator vanes are aerodynamically shaped and fixed at an angle precisely calculated to redirect this swirling air[14]. As the air passes through the vanes, its rotational kinetic energy is converted into usable static pressure, effectively "straightening" the flow and substantially increasing the fan's pressure capability and overall efficiency[13].