Electrical machines for integration into a propulsion engine

A propulsion engine comprising:

• a core portion generating exhaust that travels in an axial direction;
• a turbine section coupled to a shaft, wherein the turbine section receives the exhaust and generates mechanical energy to rotate the shaft;
• a turbine frame attached to the turbine section, the turbine frame comprising:
• an outer casing coupled to the turbine section;
• and
• an inner hub supporting the shaft via a bearing assembly comprising an engine bearing supporting the shaft;
• and
• an electrical machine comprising:
• a stator assembly comprising a stator support assembly attached to the inner hub and a stator attached to the stator support structure;
• an electrical machine shaft coupled to an end of the shaft via an intermediate shaft member extending axially between the end of the shaft and the electrical machine shaft;
• a bearing support frame attached to the inner hub and extending radially inward therefrom to define a bearing cavity extending between the bearing support frame and electrical machine shaft;
• electrical machine bearings radially extending from the bearing support frame to rotatably contact the electrical machine shaft;
• and
• a rotor assembly comprising:
• a rotor support structure connected to the electrical machine shaft;
• and
• a rotor attached to the rotor support structure and extending radially inward of the stator, wherein the rotor rotates in conjunction with the shaft via the intermediate shaft member to exchange energy with the shaft.