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 . <EOS>