Environmental Control System (ECS) http: //www. boeing. com/commercial/cabinair/ecs. pdf Design Class Presentation AIAA Team 2 Ryan Fortier Greg Costanzo 9/12/2006 1
AIAA Team 2 ECS Outline • • • Pneumatic Subsystem Air Conditioning How it works Cabin Pressure Emergency Oxygen http: //www. boeing. com/commercial/cabinair/ecs. pdf 2
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) 3
AIAA Team 2 ECS Air Conditioning • Control temperature • Takes air from the engine bleed and cools it • Air is filter through purification systems • 20 ft 3 of air per min per passenger • Avionics equipment require a direct line http: //www. boeing. com/commercial/cabinair/ecs. pdf 4
AIAA Team 2 ECS How it Works Air enters engine http: //www. boeing. com/commercial/cabinair/avi/1 newintake. avi 5
AIAA Team 2 ECS How it Works Passes through a catalytic ozone converter http: //www. boeing. com/commercial/cabinair/avi/5 newpackanim. avi 6
AIAA Team 2 ECS How it Works Enters the air-conditioning packs http: //www. boeing. com/commercial/cabinair/avi/6 newpak 2 statmix. avi 7
AIAA Team 2 ECS How it Works Enters the mixing manifold http: //www. boeing. com/commercial/cabinair/avi/8 mixmanifold. avi 8
AIAA Team 2 ECS How it Works Outside air and re-circulated air mix http: //www. boeing. com/commercial/cabinair/avi/10 maindistribution. avi 9
AIAA Team 2 ECS How it Works Air is supplied to cabin http: //www. boeing. com/commercial/cabinair/avi/12 cabinvents. avi 10
AIAA Team 2 ECS How it Works Air is exhausted from the airplane http: //www. boeing. com/commercial/cabinair/avi/13 exhaust. avi 11
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 http: //www. studio 2 f. com/misc/images/oxygen_masks_deployed. jpg • 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 12
AIAA Team 2 Example http: //www. carletonls. com/productsbu/aviationo 2/ADV 10572. pdf ECS 13
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 14
AIAA Team 2 ECS Future • Lower Cabin Pressure (~6000 ft) http: //www. boeingcapital. com/p 2 p/techredefinesjoy. htm 15
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/air craft/c-130 -car. htm • http: //www. boeing. com/commercial/cabinai r/ecs. pdf 16
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? 17
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