The Boeing Company

Annika E Carden

Royal E Boggs

Sidney D Shell

Brian Dale Hlavka

Brian D Hlavka

An air distribution system and method for an air conditioning system in an air vehicle are provided. The air distribution system has lower lobe ducts below a cabin floor of a cabin of the air vehicle. Each lower lobe duct is in fluid communication with a mix manifold coupled to AC packs. The air distribution system further has sidewall riser ducts, outboard manifold ducts, a recirculation air duct, and either recirculation downer ducts, or branch recirculation ducts coupled to the recirculation air duct. The air distribution system has a conditioned air flow, distributed to either the lower lobe ducts, or the lower lobe ducts and then the sidewall riser ducts; has a recirculated air flow, distributed to either the recirculation downer ducts or branch recirculation ducts; and has a mixed air flow distributed to the outboard manifold ducts, and into the cabin.

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Mt. Pleasant, SC, United States of America

Annika E Carden