Description / Abstract:
This SAE Aerospace information Report (AIR) provides information
on air quality and some of the factors affecting the perception of
cabin air quality in commercial aircraft cabin air. Also a typical
safety analysis process utilizing a Functional Hazard Assessment
approach is discussed.
Purpose
The purpose of this AIR is to discuss air issues and
environmental factors in commercial airplanes. This AIR provides
general information and references more detailed SAE references
regarding on Environmental Control System (ECS), air quality
contaminants, cabin pressurization, temperature, and humidity that
affect the perception of the cabin environment. A system safety
assessment utilizing a Functional Hazard Assessment approach is
also included.
The airplane cabin is a unique environment that is low in
humidity and pressurized to a cabin altitude of up to 2400 m (8000
ft). Multiple factors affecting our perception of environmental
comfort include being subject to continuous noise and vibration,
accelerations in multiple directions, and potential exposure to
contaminants. The design of the cabin environment system along with
the airline maintenance/operations is intended to provide a safe,
healthy, and comfortable cabin environment.