Motor assembly for a washing machine appliance

A washing machine appliance comprising:

• a cabinet;
• a wash tub positioned within the cabinet and defining a wash chamber;
• a wash basket rotatably mounted within the wash tub for receiving of a load of articles for washing;
• an agitation element rotatably mounted within the wash basket;
• and
• a motor assembly operably coupled to the wash basket and the agitation element for selectively rotating the wash basket and the agitation element, the motor assembly comprising:
• a drive motor having a motor shaft defining an axial direction;
• a transmission assembly operably coupled to the wash basket and the agitation element for transmitting torque from the motor shaft to the wash basket and the agitation element;
• and
• a cooling fan mechanically coupled to the motor shaft for urging a flow of air as the drive motor rotates the motor shaft, the cooling fan comprising a plurality of blades, wherein the plurality of blades have a geometry that varies along the axial direction to follow a contour of an external surface of the drive motor.