Journal article Open Access

Aircraft Cabin Air and Engine Oil — An Engineering View

Scholz, Dieter

Almost all passenger jet aircraft today use potentially contaminated bleed air for cabin ventilation. A detailed look at the design of engine bearings, their lubrication and sealing reveals that jet engines leak small amounts of oil by design and not only in failure cases. An equation is derived to calculate the concentration of a possible cabin air contamination. Results show good agreement with measured concentrations of hydrocarbons in aircraft cabins under normal conditions. The solution to the problem of cabin air contamination is a bleed free design. Other partial remedies are briefly discussed.

This paper is part of: "2017 International Aircraft Cabin Air Conference : Conference Proceedings". In: Journal of Health and Pollution, Vol. 9, No. 24 (Dec. 2019)
Files (783.2 kB)
Name Size
783.2 kB Download
All versions This version
Views 349347
Downloads 7069
Data volume 54.8 MB54.0 MB
Unique views 172170
Unique downloads 6160


Cite as