A gaseous emissions analysis of commercial aircraft engines during test-cell run

Turgut, Enis Turhan; Cavcar, Mustafa; Yay, Ozan Devrim; Ucarsu, Mehmet; Yilmaz, Elif; Usanmaz, Öznur; Armutlu, Kadir; Döğeroğlu, Tuncay

doi:10.1016/j.atmosenv.2015.06.031

Cited by 10 publications

(2 citation statements)

References 21 publications

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“…1. An overview of the imaging structure, adapted from [6], showing the central 126-beam array, dodecagonal mounting, the 1.4 m exhaust plume, the distribution (red) of 2 µm laser light using a TDFA and spliced fiber network, the 12-node DAQ and the back-end data network to the control PC (blue). Fig.…”

Section: The Tomographic Setup: An Overviewmentioning

confidence: 99%

“…Elements of the technique have been deployed successfully for a) CST in automotive engines, b) TDLAS in commercial jet-engines using single-beams [2,3] and c) small development jet engines using both CST [4] and hyper-spectral imaging cameras [5]. Compared with previous methods [6], this project aims to increase the tomographic imaging rate towards 100 frames/s and achieve spatial resolutions of 10 × 10 cm throughout the 1.4-1.7 m diameter cross-section of the plume [7,8]. By obtaining video-rate images and showing scalability towards >200 fps, the dynamics of gas mixing within the plume [5] can start to be observed and will complement existing, intrusive testing.…”

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confidence: 99%

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A Custom, High-Channel Count Data Acquisition System for Chemical Species Tomography of Aero-Jet Engine Exhaust Plumes

Fisher

Benoy

Humphries

et al. 2020

IEEE Trans. Instrum. Meas.

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The FLITES project (Fiber-Laser Imaging of gas Turbine Exhaust Species) aims to provide a videorate imaging (100 fps) diagnostic tool for application to the exhaust plumes of the largest civil aero-jet engines. This remit, enabled by chemical species tomography (CST) currently targeting Carbon Dioxide (CO2), requires system design that facilitates expansion of multiple parameters. Scalability is needed in order to increase imaging speeds and spatial resolutions and extend the system towards other pertinent gases such as the oxides of Nitrogen and Sulphur and unburnt hydrocarbons. This paper presents a fully-scalable, non-invasive instrument for installation in a commercial engine testing facility, technical challenges having been tackled iteratively through bespoke optical and mechanical design, and it specifically presents the high-speed data acquisition system (DAQ) required. Measurement of gas species concentration is implemented by tunable diode laser absorption with wavelength modulation spectroscopy (TDLAS-WMS) using a custom, high-speed 10-40 MS/s/channel 14-bit DAQ. For CO2 tomography, the system uses 6 angular projections of 21 beams each. However, the presented DAQ has capacity for 192 fully-parallel 10-Hz to 3-MHz differential inputs, achieving a best-case SNR of 56.5 dB prior to filtering. Twelve Ethernet-connected digitization nodes based on field-programmable gate array (FPGA) technology with software control, are distributed around a 7-m diameter mounting "ring". Hence, the high data rates of 8.96-Gb/s per printed circuit board (PCB) and 107.52 Gb/s for the whole system, can be reduced using local digital lock-in amplifiers (DLIAs). We believe this DAQ system is unique in both the TDLAS and CST literature.

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Section: The Tomographic Setup: An Overviewmentioning

confidence: 99%

mentioning

confidence: 99%

A Custom, High-Channel Count Data Acquisition System for Chemical Species Tomography of Aero-Jet Engine Exhaust Plumes

Fisher

Benoy

Humphries

et al. 2020

IEEE Trans. Instrum. Meas.

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Estimation and dispersion modeling of landing and take-off (LTO) cycle emissions from Atatürk International Airport

Kuzu

2017

Air Qual Atmos Health

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Investigation of emissions from passenger flights Denizli Çardak Airport, Türkiye

Çil,

Tarhan

2024

Air Qual Atmos Health

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Due to developing aviation sector, number of aircraft in the world is increasing. Along with this development, problems such as the decrease in air quality in and around the airport also arise. In this study, it is tried to calculate pollutant emissions occurring in 2022 during the LTO cycles of Denizli Çardak Airport in Turkey. These calculations are based on the information obtained from ICAO Engine Emission Data Bank and flight information published by the General Directorate of State Airports Authority (GDSAA). As a result of the data obtained, 74.64 ton/year pollutants (NOx-37.148 t/y, CO-35.398 t/y and HC-2.094 t/y) were calculated for 2022 at Denizli Çardak Airport. Of all emissions, NOx accounted for 50%, CO 47% and HC 3%. In the LTO cycle, the most fuel is burned in taxi cycle and pollutant emissions produced in this cycle are greater. With a 2 min reduction in taxi time, there will be an approximate 6.8% reduction in the total emission rate in the LTO cycle. Similarly, with a 4 min reduction in taxi time, there will be a 13.72% reduction in the whole emission rate in the LTO cycle. Unlike other studies, in this study the emission rates of various engines were compared. It has been calculated that the amount of pollutant emissions produced by the new generation Boeing 737 MAX LEAP-1B powered aircraft in LTO cycle is 25% less than the amount of pollutant emissions produced by the Airbus A320 NEO LEAP-1 A powered aircraft. The biggest factor here is that the emission of CO pollutants is less. Considering the emission rates produced by these four different engines (B737-800 CFM56-7B, A320 V2500-A1, B737 MAX LEAP-1B, A320 NEO LEAP-1 A), the Airbus A320 V2500-A1 engine is a more environmentally friendly engine than the other engines.

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A gaseous emissions analysis of commercial aircraft engines during test-cell run

Cited by 10 publications

References 21 publications

A Custom, High-Channel Count Data Acquisition System for Chemical Species Tomography of Aero-Jet Engine Exhaust Plumes

A Custom, High-Channel Count Data Acquisition System for Chemical Species Tomography of Aero-Jet Engine Exhaust Plumes

Estimation and dispersion modeling of landing and take-off (LTO) cycle emissions from Atatürk International Airport

Investigation of emissions from passenger flights Denizli Çardak Airport, Türkiye

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