Quantities, Characteristics and Reduction Potentials of Aircraft Engine Emissions

This paper describes ways to determine the amount and the composition of aircraft engine emissions. Findings of all kinds of engine measurement campaigns are taken into account and some emission calculation techniques are addressed. These calculation techniques are used to generate results for aircraft engines at typical operating conditions, for given flight missions and for the global aviation in total. Special emphasize is placed on the mass and the properties of the soot aerosol. Furthermore some possibilities to reduce the emissions and the associated reduction potentials are presented. And finally the expected outcome of some ongoing relevant EC-projects is outlined.