Combine harvesters having louvers to adjust air flow, and related methods

A combine harvester having a longitudinal axis extending from a forward end to a rearward end thereof, the combine harvester comprising:

• a cleaning shoe comprising:
• a housing;
• a chaffer having a frame assembly and a plurality of first louvers rotatably mounted to the frame assembly, wherein the first louvers are configured to rotate about lateral axes thereof, the lateral axes perpendicular to the longitudinal axis of the combine harvester;
• at least one sensor configured to measure a property selected from the group consisting of an orientation of the combine harvester, an air flow through the chaffer, and a solid material flow through the chaffer;
• and
• a blower comprising a plurality of second louvers, the second louvers located directly below the chaffer and configured to change a lateral direction of air flow from the blower to the chaffer responsive to the property measured by the at least one sensor, wherein when the second louvers are each in a neutral orientation, the second louvers are parallel to one another and to the longitudinal axis of the combine harvester.