Title: Using emission index to determine energy efficiency and environmental parameters of a turbofan engine at various flight phases

Authors: Yasin Şöhret; T. Hikmet Karakoc; Onder Turan

Addresses: Aircraft Technology Program, Keciborlu Vocational School, Suleyman Demirel University, TR-32700 Isparta, Turkey ' Faculty of Aeronautics and Astronautics, Anadolu University, TR-26470 Eskisehir, Turkey ' Faculty of Aeronautics and Astronautics, Anadolu University, TR-26470 Eskisehir, Turkey

Abstract: In this study, an unordinary methodology for energy efficiency calculation of a turbofan engine is introduced. Emission indexes of the engine are used to find out energy efficiency and novel parameters for environmental impact assessment. Energy efficiency is proven at take-off, climb-out and approach phases of the flight for the turbofan engine. Additionally, power and energy emission index variations of the turbofan engine for carbon monoxide and unburned hydro carbon constituents of the exhaust are presented in the paper. As a result of the study, energy efficiency of the turbofan engine is determined 35.68%, 41.12% and 36.05 at take-off, climb-out and approach flight phases respectively.

Keywords: turbofan engines; engine emissions; aircraft emissions; environmental impact assessment; EIA; energy efficiency; flight phases; carbon monoxide; unburned hydrocarbons; take-off; climb-out; approach flight.

DOI: 10.1504/IJGW.2016.077897

International Journal of Global Warming, 2016 Vol.10 No.1/2/3, pp.3 - 15

Received: 31 Jul 2014
Accepted: 22 Oct 2014

Published online: 20 Jul 2016 *

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