History of Filtration

Past Cabin Air Systems

Prior to the 1980s‚ Cabin Aircraft Environmental Control Systems (ECS) used 100 percent fresh air (none was re-circulated). This process of compressing and then cooling the outside air to an inhabitable pressure and temperature consumed a significant amount of energy. There was no filtration and there were no cabin air quality standards at that time.

Current Cabin Air Systems 

The use of re-circulated air, combined with outside air, coincided with the introduction of high bypass ratio fan engines. Newer airplane models recirculate as much as 50% of cabin air, decreasing the engine's work. The re-circulated air passes through high-efficiency particulate filters before mixing with conditioned fresh air to re-enter the passenger compartment. Benefits include reduced fuel burn and associated engine emissions, and lower potential exposure to atmospheric ozone.

Donaldson Bloomington, MN USA

Donaldson Company, Inc.
1400 West 94th Street
Minneapolis, MN 55431-2370
United States
+866-323-0394

Donaldson Bloomington, MN USA

Donaldson Company, Inc.
1400 West 94th Street
Minneapolis, MN 55431-2370
United States
+866-323-0394

Donaldson Bloomington, MN USA

Donaldson Company, Inc.
1400 West 94th Street
Minneapolis, MN 55431-2370
United States
+866-323-0394

Donaldson Bloomington, MN USA

Donaldson Company, Inc.
1400 West 94th Street
Minneapolis, MN 55431-2370
United States
+866-323-0394

Donaldson Bloomington, MN USA

Donaldson Company, Inc.
1400 West 94th Street
Minneapolis, MN 55431-2370
United States
+866-323-0394

Donaldson Bloomington, MN USA

Donaldson Company, Inc.
1400 West 94th Street
Minneapolis, MN 55431-2370
United States
+866-323-0394

Donaldson Bloomington, MN USA

Donaldson Company, Inc.
1400 West 94th Street
Minneapolis, MN 55431-2370
United States
+866-323-0394

Donaldson Bloomington, MN USA

Donaldson Company, Inc.
1400 West 94th Street
Minneapolis, MN 55431-2370
United States
+866-323-0394

Donaldson Bloomington, MN USA

Donaldson Company, Inc.
1400 West 94th Street
Minneapolis, MN 55431-2370
United States
+866-323-0394

Donaldson Bloomington, MN USA

Donaldson Company, Inc.
1400 West 94th Street
Minneapolis, MN 55431-2370
United States
+866-323-0394

Donaldson Bloomington, MN USA

Donaldson Company, Inc.
1400 West 94th Street
Minneapolis, MN 55431-2370
United States
+866-323-0394

Donaldson Bloomington, MN USA

Donaldson Company, Inc.
1400 West 94th Street
Minneapolis, MN 55431-2370
United States
+866-323-0394

Donaldson Bloomington, MN USA

Donaldson Company, Inc.
1400 West 94th Street
Minneapolis, MN 55431-2370
United States
+866-323-0394

Donaldson Bloomington, MN USA

Donaldson Company, Inc.
1400 West 94th Street
Minneapolis, MN 55431-2370
United States
+866-323-0394

Donaldson Bloomington, MN USA

Donaldson Company, Inc.
1400 West 94th Street
Minneapolis, MN 55431-2370
United States
+866-323-0394

Donaldson Bloomington, MN USA

Donaldson Company, Inc.
1400 West 94th Street
Minneapolis, MN 55431-2370
United States
+866-323-0394

Donaldson Bloomington, MN USA

Donaldson Company, Inc.
1400 West 94th Street
Minneapolis, MN 55431-2370
United States
+866-323-0394

Donaldson Bloomington, MN USA

Donaldson Company, Inc.
1400 West 94th Street
Minneapolis, MN 55431-2370
United States
+866-323-0394

Donaldson Bloomington, MN USA

Donaldson Company, Inc.
1400 West 94th Street
Minneapolis, MN 55431-2370
United States
+866-323-0394

Donaldson Bloomington, MN USA

Donaldson Company, Inc.
1400 West 94th Street
Minneapolis, MN 55431-2370
United States
+866-323-0394

Filtration Solutions for Global Customers

Explore our map to find direct Donaldson Aerospace & Defense resources within your region of the world.