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Title:

The Use of Flight Data Records to Analyse the Impact of Single-Engine Taxiing (SET) on Aircraft Fuel Consumption and NOₓ Emissions

Accession Number:

01589747

Record Type:

Component

Abstract:

Single-engine taxiing (SET) has been identified as a feature of aircraft taxi-in activity at London Heathrow airport (LHR) and is primarily employed to reduce fuel consumption and the emission of pollutants harmful to human health such as nitrogen oxides (NOₓ). Previous research sought to calculate the extent to which SET can impact these factors, however, the validity of results has been limited by a lack of data, which has placed reliance on assumptions for aircraft 4D trajectories and thrust setting profiles. This research uses a large sample of Airbus A319 flight data records to define and categorise SET and twin-engine taxiing (TET) using average thrust settings. These categories are analysed to compare the characteristics of the variables that have an impact on NOₓ emissions, namely fuel flow rate and time-in-mode (TIM). Fuel flow rate is reduced by 27% when using SET relative to TET, and corresponds to a 29% reduction in NOₓ emission rate. However, on average, taxi-in TIM is increased by 30% for SET relative to TET. The net impact of SET is a reduction of 10% on fuel consumption, and a reduction of 8% on total NOₓ emissions, relative to TET activity. Increased TIM limits the impacts of SET; therefore efforts should be made to reduce taxi duration in parallel with the adoption of SET. Confidence is substantially increased in these findings, relative to previous work. An improved understanding of the characteristics of SET is provided and will facilitate the adoption of this mitigation measure for appropriate operations.

Supplemental Notes:

Alternate title: Use of Flight Data Records to Analyze the Impact of Single-Engine Taxiing on Aircraft Fuel Consumption and NOX Emissions.

Monograph Accession #:

01584066

Report/Paper Numbers:

16-3416

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Koudis, George
Chun, Kar Lee
Majumdar, Arnab
Hu, Simon
North, Robin

Pagination:

14p

Publication Date:

2016

Conference:

Transportation Research Board 95th Annual Meeting

Location: Washington DC, United States
Date: 2016-1-10 to 2016-1-14
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Identifier Terms:

Heathrow Airport

Subject Areas:

Aviation; Energy; Environment; I15: Environment

Source Data:

Transportation Research Board Annual Meeting 2016 Paper #16-3416

Files:

TRIS, TRB, ATRI

Created Date:

Jan 29 2016 12:55PM