A system, comprising: a machine having a shaft extending therefrom; a fan mounted on the shaft and being constructed to generate a cooling airflow for cooling the machine; a shroud arranged around the fan, wherein the shroud is constructed to direct the cooling airflow parallel to the shaft over an outer surface of the machine, the fan including: - a hub; - a shroud ring; - a plurality of axial fan blades extending between the hub and the shroud ring and coupled to the hub and the shroud ring, each axial fan blade having an axial fan blade tip end coupled to the shroud ring, wherein the axial fan blades are constructed to form an axial fan and to generate an axial flow through a central portion of the fan; and - a plurality of centrifugal fan blades coupled to the shroud ring and extending outwardly from the shroud ring, wherein the centrifugal fan blades are constructed to form a centrifugal fan disposed outward of the axial fan, and wherein each centrifugal fan blade includes a centrifugal fan blade tip end; wherein the system further comprises a stabilizer ring coupled to each centrifugal fan blade tip end, the stabilizer ring being constructed to: - stabilize the tip ends of the centrifugal fan blades, and - direct flow from the centrifugal fan blades in an axial direction parallel to the axial flow generated by the axial fan. a machine having a shaft extending therefrom; a fan mounted on the shaft and being constructed to generate a cooling airflow for cooling the machine; a shroud arranged around the fan, wherein the shroud is constructed to direct the cooling airflow parallel to the shaft over an outer surface of the machine, the fan including: - a hub; - a shroud ring; - a plurality of axial fan blades extending between the hub and the shroud ring and coupled to the hub and the shroud ring, each axial fan blade having an axial fan blade tip end coupled to the shroud ring, wherein the axial fan blades are constructed to form an axial fan and to generate an axial flow through a central portion of the fan; and - a plurality of centrifugal fan blades coupled to the shroud ring and extending outwardly from the shroud ring, wherein the centrifugal fan blades are constructed to form a centrifugal fan disposed outward of the axial fan, and wherein each centrifugal fan blade includes a centrifugal fan blade tip end; - a hub; - a shroud ring; - a plurality of axial fan blades extending between the hub and the shroud ring and coupled to the hub and the shroud ring, each axial fan blade having an axial fan blade tip end coupled to the shroud ring, wherein the axial fan blades are constructed to form an axial fan and to generate an axial flow through a central portion of the fan; and - a plurality of centrifugal fan blades coupled to the shroud ring and extending outwardly from the shroud ring, wherein the centrifugal fan blades are constructed to form a centrifugal fan disposed outward of the axial fan, and wherein each centrifugal fan blade includes a centrifugal fan blade tip end; wherein the system further comprises a stabilizer ring coupled to each centrifugal fan blade tip end, the stabilizer ring being constructed to: - stabilize the tip ends of the centrifugal fan blades, and - direct flow from the centrifugal fan blades in an axial direction parallel to the axial flow generated by the axial fan. - stabilize the tip ends of the centrifugal fan blades, and - direct flow from the centrifugal fan blades in an axial direction parallel to the axial flow generated by the axial fan.