IMPROVED BEARING COOLING SCHEMES FOR AIRCRAFT FANS

Aircraft and aircraft blower systems are described. The blower systems include a shaft (214), a motor having a stator (210) and a rotor (212), the rotor being operably coupled to the shaft, a fan (206) operably coupled to the shaft and configured to be driven by rotation of the shaft, one or more bearings (220) arranged along the shaft, and a high pressure cooling source configured to supply high pressure air to the one or more bearings.