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Effect of vertical profile inefficiency during descent on fuel burn, emissions and flight time

Part of: Sustainable Aerospace

Published online by Cambridge University Press:  07 May 2018

H. Aksoy ,
O. Usanmaz  and
E. T. Turgut
H. Aksoy*
Affiliation:
Department of Air Traffic Control, Faculty of Aeronautics and Astronautics, Anadolu University, Eskisehir, Turkey
O. Usanmaz
Affiliation:
Department of Air Traffic Control, Faculty of Aeronautics and Astronautics, Anadolu University, Eskisehir, Turkey
E. T. Turgut
Affiliation:
Department of Airframe and Powerplant Maintenance, Faculty of Aeronautics and Astronautics, Anadolu University, Eskisehir, Turkey
*
hakkiaksoy@anadolu.edu.tr
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Abstract

Vertical profile inefficiency caused by low-level flight segments during arrival and departure operations has a great impact on the financial cost of operators as well as negative environmental effects. In this regard, continuous descent and climb operations for arrival and departure phases are mostly preferred as one of the methods that reduce or eliminate vertical profile inefficiencies. In this study, focus is put on the arrival phase and the purpose is: (i) to analyse the vertical profiles of arrival traffic at Mugla Milas-Bodrum Airport (BJV), Antalya Airport (AYT) and Ankara Esenboga Airport (ESB) and to characterise the level-offs that occur in the arrival phase and (ii) to quantify the potential time, fuel and emission savings in the event of a shift of inefficient low-level flight segments to the cruise segment of equal distance. For the purpose of this paper, real-time flight data is used for the analysis of the vertical profiles of flights. Flight parameters, such as latitude, longitude, altitude, speed and so on are used to determine, visualise and characterise level-off segments. The Boeing Fuel Flow Method 2 is used to calculate emissions at any altitude. Analyses of the results show that 80%, 74% and 69% of arrival traffic at BJV, AYT and ESB, respectively. were exposed to at least one level-off lasting longer than 20 seconds and significant potential for time, fuel and emissions savings exist for three airports.

Keywords

Vertical profile inefficiencyCDA operationsCCO operationsfuel consumptionemissions
Type
Research Article
Information
The Aeronautical Journal , Volume 122 , Issue 1252 , June 2018 , pp. 913 - 932
Copyright
Copyright © Royal Aeronautical Society 2018 

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