AGEAIR: Investigation of the effects of performance deterioration and AGEing on gaseous and particulate emissions of in-service AIRcraft turbofan engines
At a glance
- Project leader : Dr. Julien Anet
- Deputy of project leader : Curdin Spirig
- Project team : Dr. Lukas Durdina, Dr. Lukas Durdina, Jacinta Edebeli, Manuel Waltert
- Project status : completed
- Funding partner : Federal government (Bundesamt für Zivilluftfahrt BAZL)
- Contact person : Julien Anet
The thresholds for various pollutants of turbofan engines with a
thrust above 26.7 kN are defined in the Chicago convention, Annex
16, Volume 1-3. Since the emitted particulate matter has become
increasingly finer in recent decades, the measurement standard had
to be refined. From 2020 on, not only the so-called "smoke number",
but also various other parameters will be used as threshold values
for newly produced or in-use turbofan engines.
The influence of engine deterioration (or AGEing AIRcraft engines) on the composition of pollutants is still largely unknown. This knowledge is important for the following reasons: (i) The current pollutant certification – and the new one, coming into effect in 2020 - is a type certification for the considered turbofan engine. A change of the pollutant emission behaviour with increasing age is to be expected, in particular due to the wear of components (e.g. deposits on injectors, efficiency losses in compressors, etc.). (ii) The most common emission inventories derive their emission data from the type certification data (ICAO database), which is associated with unknown uncertainties. (iii) In contrast to road traffic, there are no known data sets on the influence of engine ageing on emissions in aviation.
To close this knowledge gap, measurements on CFM56-7B and PW4000 engines are planned. By doing so, two statistically relevant data sets can be created. These data sets are then correlated in a multivariate statistical model with various engine parameters such as EGT margin, run time or cycles. As such, the ageing effect can be quantified. The aim is to develop a simple parameterization which can be applied in emission inventories.
Durdina, Lukas; Brem, Benjamin Tobias; Elser, Miriam; Schönenberger, David; Siegerist, Frithjof; Anet, Julien,
Reduction of nonvolatile particulate matter emissions of a commercial turbofan engine at the ground level from the use of a sustainable aviation fuel blend.
Environmental Science & Technology.
Available from: https://doi.org/10.21256/zhaw-23310
Lobo, Prem; Durdina, Lukas; Brem, Benjamin T.; Crayford, Andrew P.; Johnson, Mark P.; Smallwood, Greg J.; Siegerist, Frithjof; Williams, Paul I.; Black, Elizabeth A.; Llamedo, Andrea; Thomson, Kevin A.; Trueblood, Max B.; Yu, Zhenhong; Hagen, Donald E.; Whitefield, Philip D.; Miake-Lye, Richard C.; Rindlisbacher, Theo,
Comparison of standardized sampling and measurement reference systems for aircraft engine non-volatile particulate matter emissions.
Journal of Aerosol Science.
Available from: https://doi.org/10.1016/j.jaerosci.2020.105557
Durdina, Lukas; Edebeli, Jacinta; Spirig, Curdin; Anet, Julien,
Non-volatile particulate matter emission measurements of in-service commercial turbofan engines : a comparison with estimates using certified emissions of new engines [poster].
American Geophysical Union Fall Meeting 2019, San Francisco, CA, USA, 9-13 December 2019.
Durdina, Lukas; Brem, Benjamin T.; Schönenberger, David; Siegerist, Frithjof; Anet, Julien G.; Rindlisbacher, Theo,
Nonvolatile particulate matter emissions of a business jet measured at ground level and estimated for cruising altitudes.
Environmental Science & Technology.
53(21), pp. 12865-12872.
Available from: https://doi.org/10.1021/acs.est.9b02513
Durdina, Lukas; Lobo, Prem; Brem, Benjamin; Elser, Miriam; Schönenberger, David; Smallwood, Greg; Siegerist, Frithjof; Anet, Julien,
Characterising particulate matter in the evolving exhaust plume of an aircraft engine in a test cell [paper].
Combustion Aerosol Conference 2019, Cambridge, UK, 26-28 June 2019.
Elser, Miriam; Brem, Benjamin Tobias; Durdina, Lukas; Schönenberger, David; Siegerist, Frithjof; Fischer, Andrea; Wang, Jing,
Chemical composition and radiative properties of nascent particulate matter emitted by an aircraft turbofan burning conventional and alternative fuels.
Atmospheric Chemistry and Physics.
19, pp. 6809-6820.
Available from: https://doi.org/10.5194/acp-19-6809-2019