Normal and extreme aircraft accelerations and the effects on exposure to expiratory airborne contaminant inside commercial aircraft cabins A technical note in response to: 'Are aircraft acceleration-induced body forces effective on contaminant dispersion in passenger aircraft cabins?' and 'Airflow design and source control strategies for reducing airborne contaminant exposure in passenger aircraft cabins during the climb leg' (2019) in Sci. Technol. Built En.

摘要

A novel dataset based on satellite observations of aircraft positions was utilized to estimate normal accelerations of commercial aircraft during climb and descent legs. Further, these accelerations are used to simulate the effects on exposure to expiratory airborne contaminant inside commercial aircraft cabins. Compared to previous studies, which reported exposures more than twice due to high aircraft accelerations during the climb leg, the new findings suggest lower aircraft accelerations that result in exposures on par with steady level flights during climb and descent legs. The new findings place previous studies in context to be interpreted as extreme conditions only while they call for more detailed experimental investigations.