Statistical model for gas turbine engines exhaust emissions |
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| Institution: | 1. Department of Airframe and Powerplant Maintenance, Graduate School of Sciences, Anadolu University, 26470 Eskisehir, Turkey;2. Department of Mechanical Engineering, Yıldız Technical University, 80750 Besiktas, Istanbul, Turkey;3. Department of Airframe and Powerplant Maintenance, Faculty of Aeronautics and Astronautics, Anadolu University, 26470 Eskisehir, Turkey;1. Anadolu University, Faculty of Aeronautics and Astronautics, TR-26470 Eskisehir, Turkey;2. TUSAS Engine Industries, Eskisehir, Turkey;1. Anadolu University, Aircraft Airframe and Powerplant Dept., Eskisehir, Turkey;2. Anadolu University, Dept. of Flight Training, Eskisehir, Turkey;3. Anadolu University, Dept. of Environmental Engineering, Eskisehir, Turkey;4. Turkish Technic, Inc., Istanbul, Turkey;5. Anadolu University, Dept. of Air Traffic Control, Eskisehir, Turkey;6. Anadolu University, Aircraft Maintenance Center, Eskisehir, Turkey;1. First Air Supply and Maintenance Center, Jet Engines Overhaul Department, Turkish Air Forces (TurAF), Eskisehir, Turkey;2. Department of Energy Systems Engineering, Faculty of Engineering, Yasar University, 35100 Bornova, Izmir, Turkey |
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| Abstract: | A statistical analysis has been developed from the ICAO databank to predict aero-engines exhaust emissions during a landing and take-off cycle (LTO). The ICAO databank contains updated emission indices for a vast number of turbojet and turbofan engines only, with thrust ratings greater than 26.7 kN. Correlations are developed and proposed for turboprop and turboshaft engines to overcome the difficulty of assessing exhaust emissions from these engines in absence of industry data. LTO emissions are predicted for a turbofan-powered commuter airplane (Embraer E195) using the surrogate model. It is demonstrated that the predictions are closer to the values extracted from the flight data recorder than to the emissions calculated with the ICAO method. Thus, approximate emissions indices applied to actual flight procedures are a better choice than a standard ICAO LTO emission estimate from the databank. The correlations are then applied to the prediction of LTO emissions of a turboprop airplane (Bombardier Q400). |
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| Keywords: | Exhaust emissions Gas turbine engines Fuel flow Turboprops |
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