Electric propulsor

An electric propulsor, comprising:

• a core cowl;
• an outer cowl, a first air flowpath being defined outward of the outer cowl and a second air flowpath being defined between the core cowl and the outer cowl;
• a plurality of electric machines;
• a fan having a plurality of fan blades, the fan being positioned upstream of an inlet of the second air flowpath or downstream of an outlet of the second air flowpath;
• a booster having a plurality of airfoils disposed at least in part in the second air flowpath, the fan and the booster being rotatably drivable by separate electric machines of the plurality of electric machines;
• and
• a heat exchanger disposed at least in part in the second air flowpath downstream of the booster, the heat exchanger being in thermal communication with at least one of the plurality of electric machines.

An electric propulsor, comprising:

• a core cowl;
• an outer cowl, a first air flowpath being defined outward of the outer cowl and a second air flowpath being defined between the core cowl and the outer cowl;
• a plurality of electric machines;
• a fan having a plurality of fan blades,
• a booster having a plurality of airfoils disposed at least in part in the second air flowpath;
• and
• a cooling circuit including a heat exchanger and a pump for moving cooling fluid along one or more lines of the cooling circuit, the heat exchanger disposed at least in part in the second air flowpath downstream of the booster, the cooling circuit provides thermal communication between the heat exchanger and at least one of the plurality of electric machines, and
• wherein the fan, the booster, and the pump are rotatably drivable by separate electric machines of the plurality of electric machines.