Abstract: A fan assembly includes an internal housing having an outer internal housing, and an inner internal housing partially disposed within the outer internal housing. The inner internal housing defines an internal cavity, and has a curved exterior surface. Stator blades extend between the inner internal housing and the outer internal housing.

Abstract: A fan assembly includes an internal housing having an outer internal housing, and an inner internal housing partially disposed within the outer internal housing. The inner internal housing defines an internal cavity, and has a curved exterior surface. Stator blades extend between the inner internal housing and the outer internal housing.

Abstract: An example of a metal-based pellet extrusion additive manufacturing system is disclosed. The system may include a printing nozzle system with a turnable screw, an extruder body, and a nozzle end, wherein the turnable screw is configured to transport metal-based pellets from an extruder body towards a nozzle end. A method for fabricating an object using metal-based pellet extrusion system is also disclosed. In one example, the additive manufacturing system and method are utilized to form a fan wheel for a fan assembly. In some implementations, the fan wheel is a monolithic part without any welds or other attachment features joining fan blades of the fan wheel to the base of the fan wheel.