This SAE Aerospace Information Report (AIR) covers the design parameters for various methods of humidification applicable to aircraft, the physiological aspects of low humidities, the possible benefits of controlling cabin humidity, the penalties associated with humidification, and the problems which must be solved for practical aircraft humidification systems. The design information is applicable to commercial and military aircraft. The physiological aspects cover all aircraft environmental control applications.
Based on Document review and committee discussions on Oct. 20, 2016, we would like to update the AIR1609 for the following reasons: 1. Update the AIR per the latest technology references, instrumentations, and other related subjects 2. Add a testing section to the AIR, to define testing producers (Laboratory, analysis, and flight tests) for higher cabin humidity 3. Understanding the impact of higher cabin humidity to pressurized cabin design(s), performance, and servicing (operation)