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Staged combustor optimisation in the environmental aircraft envelope

Part of: Sustainable Aerospace

Published online by Cambridge University Press:  04 July 2016

A. Wulff  and
J. Hourmouziadis
A. Wulff
Affiliation:
Aerospace Institute, Berlin University of Technology, Germany
J. Hourmouziadis
Affiliation:
Aerospace Institute, Berlin University of Technology, Germany
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Abstract

A new semi-empirical one-dimensional approach for the prediction of aeroengine combustor emissions is presented. The model features a high level of versatility, resulting in a remarkable correlation quality of measurement data of different combustors. This combustion model was modified to reflect the design characteristics of staged combustors. After implementation in an optimisation procedure it was used for staged combustor design studies. For a typical aeroengine application an optimised combustor design was derived with respect to a predefined criteria. Potential exchange rates of combustion efficiency versus NOx emissions by rematching the fuel split for different operating conditions at extreme points of the environmental envelope (ISA/hot day/cold day) of a modern commercial aircraft were investigated. Conclusions regarding the suitable operation of the combustor were drawn. Finally the effect of changed design constrains on the optimisation result was investigated.

Type
Research Article
Information
The Aeronautical Journal , Volume 107 , Issue 1071 , May 2003 , pp. 263 - 273
Copyright
Copyright © Royal Aeronautical Society 2003 

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