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Progress towards non-intrusive optical measurement of gas turbine exhaust species distributions

Wright, Paul and McCormick, David and Ozanyan, Krikor and Johnson, Mark and Black, John and Fisher, Edward and Chighine, Andrea and Polydorides, Nick and McCann, Hugh and Feng, Yutong and Khan, Khouler and Bastock, Paul and Jia, Fuqiang and Hewak, Dan and Nilsson, Johan and Lengden, Michael and Wilson, David and Armstrong, Ian and Benoy, Thomas and Johnstone, Walter (2015) Progress towards non-intrusive optical measurement of gas turbine exhaust species distributions. In: Aerospace Conference, 2015 IEEE. IEEE, pp. 1-14. ISBN 9781479953790

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Abstract

We report on the development of three systems intended to provide fast, non-intrusive measurement of cross-sectional distributions of pollutant species within gas turbine exhaust flows, during ground-based testing. This research is motivated by the need for measurement systems to support the introduction of technologies for reducing the environmental impact of civil aviation. Tomographic techniques will allow estimation of the distributions of CO2, unburnt hydrocarbons (UHC), and soot, without obstruction of the exhaust, bypass or entrained flows, from measurements made in a plane immediately aft of the engine.