Environmental Control System (ECS) http://www.boeing.com/commercial/cabinair/ecs.pdf http://www.boeing.com/commercial/cabinair/ecs.pdf Design Class Presentation AIAA Team 2 Ryan Fortier Greg Costanzo 9/12/2006

Outline Pneumatic Subsystem Air Conditioning How it works AIAA Team 2 ECS Outline Pneumatic Subsystem Air Conditioning How it works Cabin Pressure Emergency Oxygen http://www.boeing.com/commercial/cabinair/ecs.pdf

Pneumatic Subsystem Cabin pressurization Air conditioning AIAA Team 2 ECS Pneumatic Subsystem Cabin pressurization Air conditioning Ice Protection Cross engine starting Courtesy: Airplane Design Part IV: Layout Design of Landing Gear and Systems (Pg. 334)

Air Conditioning Control temperature AIAA Team 2 ECS Air Conditioning Control temperature Takes air from the engine bleed and cools it Air is filter through purification systems 20 ft3 of air per min per passenger Avionics equipment require a direct line http://www.boeing.com/commercial/cabinair/ecs.pdf

How it Works AIAA Team 2 ECS Air enters engine http://www.boeing.com/commercial/cabinair/avi/1newintake.avi

Passes through a catalytic ozone converter AIAA Team 2 ECS How it Works Passes through a catalytic ozone converter http://www.boeing.com/commercial/cabinair/avi/5newpackanim.avi

Enters the air-conditioning packs AIAA Team 2 ECS How it Works Enters the air-conditioning packs http://www.boeing.com/commercial/cabinair/avi/6newpak2statmix.avi

Enters the mixing manifold AIAA Team 2 ECS How it Works Enters the mixing manifold http://www.boeing.com/commercial/cabinair/avi/8mixmanifold.avi

Outside air and re-circulated air mix AIAA Team 2 ECS How it Works Outside air and re-circulated air mix http://www.boeing.com/commercial/cabinair/avi/10maindistribution.avi

Air is supplied to cabin AIAA Team 2 ECS How it Works Air is supplied to cabin http://www.boeing.com/commercial/cabinair/avi/12cabinvents.avi

Air is exhausted from the airplane AIAA Team 2 ECS How it Works Air is exhausted from the airplane http://www.boeing.com/commercial/cabinair/avi/13exhaust.avi

Emergency Oxygen Incase of a sudden drop in pressure Types of systems AIAA Team 2 ECS Emergency Oxygen Incase of a sudden drop in pressure Types of systems Gaseous (crew) Chemical (passengers) Liquid oxygen (military) weight volume C-130 has a 25 liter liquid oxygen type system provides for 96 man-hours of oxygen at 25,000 feet portable units are also available http://www.studio2f.com/misc/images/oxygen_masks_deployed.jpg

Example AIAA Team 2 ECS http://www.carletonls.com/productsbu/aviationo2/ADV10572.pdf

Cabin Pressure 300 ft/min cabin pressure descending AIAA Team 2 ECS Cabin Pressure 300 ft/min cabin pressure descending 500 ft/min cabin pressure ascending Don’t exceed a cabin-to-outside pressure differential of 8.60 psi. Current cabin pressure max out at 8,500 ft. http://www.boeing.com/commercial/cabinair/ecs.pdf

Future Lower Cabin Pressure (~6000 ft) AIAA Team 2 ECS http://www.boeingcapital.com/p2p/techredefinesjoy.htm

References http://www.boeing.com/commercial/cabinair/ecs.pdf AIAA Team 2 ECS References Jackson, Scott. “Systems Engineering for Commercial Aircraft.” Ashgate Publishing Limited. 1997. Roskam, Dr. Jan. “Airplane Design Part IV: Layout Design of Landing Gear and Systems.” Roskam Aviation and Engineering Corporation. 1986. http://www.globalsecurity.org/military/systems/aircraft/c-130-car.htm http://www.boeing.com/commercial/cabinair/ecs.pdf

Questions? For more detailed information: AIAA Team 2 ECS Questions? For more detailed information: “Fundamentals of Aircraft Environmental Control.” by Alvin Ebeling. Constrain of aircraft design is for the airflow to travel lateral not longitudinally? Why?