Analysis of a proposal for nitric-oxide abatement in jet-aircraft engines

Abstract

Modifications are reported to a conventional gas-kinetics computer program which allow for the continuous addition of chemical species to the flowing gas. This is necessary in modelling the gas flows in a jet engine where air is continuously entrained with the burnt or burning gases, and it also facilitates the investigation of introducing chemical additives into a flowing reaction mixture.The program is used to compare, under the same one-dimensional modelling approximations, the nitric-oxide emissions from a conventional jet engine and from a proposed lean-burning modification, and it is concluded that the lean-burning model has potential for reducing nitric-oxide emission by more than two orders of magnitude.