Propulsion engine for an aircraft

A propulsion system for an aircraft having an aft end, the propulsion system comprising:

• an electric propulsion engine defining a central axis, the electric propulsion engine comprising:
• an electric motor;
• a fan rotatable about the central axis of the electric propulsion engine by the electric motor, the fan positioned proximate to the aft end of the aircraft;
• a bearing supporting rotation of the fan;
• and
• a thermal management system comprising:
• a lubrication oil circulation assembly for providing the bearing with lubrication oil;
• and
• a heat exchanger thermally connected to the lubrication oil circulation assembly.

A propulsion system for an aircraft having an aft end, the propulsion system comprising:

• an electric propulsion engine defining a central axis, the electric propulsion engine comprising:
• a main electric motor;
• a fan rotatable about the central axis of the electric propulsion engine by the electric motor;
• a bearing supporting rotation of the fan, the bearing positioned within a sump;
• and
• a thermal management system comprising:
• a lubrication oil circulation assembly for providing the bearing with a lubrication oil, wherein the lubrication oil circulation assembly comprises a lubrication oil pump having a lubrication oil pump electric motor separate from the main electric motor.