A Blog of the ZHAW Zurich University of Applied Sciences
If you have ever owned a car, you are probably familiar with the mandatory (bi-) annual emissions test, which were introduced to ensure that wear and tear on the engines do not have a negative impact on the exhaust gas quality. And even if you have never owned a car, chances are that this connection […]
As most of our active followers know, our research group is responsible for the operation, maintenance and optimization of the Swiss Mobile Aircraft Emission Measurement System (SMARTEMIS). Typically, the system is installed in test cell 1 at SR Technics, located at Zurich Airport. In 2022 however, the SR Technics management decided to reactivate their second […]
The International Civil Aviation Organization (ICAO) requires that engines of maximum rated thrust greater than 26.7kN be certified for their emission performance[1]. For certification, ICAO defined four power modes in an aircraft’s landing-take-off (LTO) cycle as emission test points. These modes include idle/taxi at 7% of the maximum rated thrust (Foo), approach at 30% Foo, […]
Written by: Jon G. Bell (belj@zhaw.ch) Volatile organic compounds (VOCs), such as benzene and formaldehyde, are characterised by high vapour pressures and, therefore, can easily adsorb to the surface of airborne soot particles, accumulating at the vapour-solid soot interface, within pores, or between the carbon core turbostratic graphene layers. These VOC-loaded, nanometric particles are extremely […]
Written by: Thomas Rötger On 7 October 2022, at the end of 2 weeks of negotiations during the 41st ICAO Assembly, the 193 ICAO Member States took the historic decision to adopt a collective long-term global aspirational goal (LTAG) of net-zero carbon emissions of international aviation by 2050. This resolution was based upon a report on the […]
A long-awaited return The previous installment of the TAC conferences, TAC-4, was the best conference I attended during my PhD back in 2015. A perfect combination of topics and social activities in a small Bavarian town away from touristy temptations. Naturally, TAC-5 had been on my radar, and it was initially supposed to follow the […]
Updates to SAE E31 in Winterthur – 27.06.2022 ZAV successfully hosted this year’s SAE E31 committee’s summer meeting from June 20 – 24 in Winterthur, Switzerland. This meeting was the first one taking place in person since January 2020. As usual, the meeting primarily focused on discussing the progress and plans for various standardized methods […]
TOOLS: Emission/immission Meteorology Computing Emissions and air quality measurements SMARTEMIS The Swiss Mobile Aircraft Emissions Measurement System (SMARTEMIS) is a state-of-the-art sampling and measurement system for gaseous pollutants and particulate matter in accordance with the International Civil Aviation Organization (ICAO) standards and recommended practices. It is one of three reference measurement systems worldwide for non-volatile […]
AGEAIR RAPTOR ACACIA AGEAIR II (Emissions of AGEing AIRcraft engines, part II) Objectives: Expanding competence in emissions measurements on various engine types Continued investigation of emission characteristics (non-volatile particles and gaseous pollutants) of large aircraft turbofan engines and the effect of engine age on their emissions Research & development for the improvements of the ICAO […]