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Mitsubishi Spindle drive unit MDSBSPJ2-110 (4507)
Mitsubishi Spindle drive unit MDSBSPJ2-110. Old spare stock. exact replacement for Mitsubishi Vulcan
Mitsubishi Spindle drive unit MDSBSPJ2-110. Old spare stock. exact replacement for Mitsubishi Vulcan...
Mooney, Steven E. Machinery Ltd

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In-flight study on use of SAF ‘very encouraging’

Posted on 03 Jun 2024. Edited by: John Hunter. Read 252 times.
In-flight study on use of SAF ‘very encouraging’Results from the world's first in-flight study of the impact of using 100% sustainable aviation fuel (SAF) on both engines of a commercial aircraft show a reduction in soot particles and formation of contrail ice crystals compared to using conventional Jet A-1 fuel.

The ECLIF3 study, in which Airbus, Rolls-Royce, the German Aerospace Center (DLR) and SAF producer Neste collaborated, was the first to measure the impact of 100% SAF use to emissions from both engines of an Airbus A350 powered by Rolls-Royce Trent XWB engines and followed by a DLR chase plane.

Compared to a reference Jet A-1 fuel, the number of contrail ice crystals per mass of unblended SAF consumed was reduced by 56%, which could significantly reduce the climate-warming effect of contrails.

Global climate model simulations conducted by DLR were used to estimate the change in the energy balance in Earth’s atmosphere — also known as radiative forcing — by contrails. The impact of contrails was estimated to be reduced by at least 26% with 100% SAF use compared to contrails resulting from the Jet A-1 reference fuel used in ECLIF3. These results show that using SAF in flight could significantly reduce the climate impact of aviation in the short term by reducing non-CO2 effects such as contrails, in addition to reducing CO2 emissions over the lifecycle of SAF.

Mark Bentall, Airbus’s head of research and technology programme, said: “We already knew that SAF could reduce the carbon footprint of aviation. Thanks to ECLIF studies, we now know that it can also reduce soot emissions and ice particulate formation that we see as contrails. This is a very encouraging result, based on science, which shows just how crucial SAFs are for decarbonising air transport.”

Alan Newby, Rolls-Royce director of research and technology, said: “Using SAF at high-blend ratios will form a key part of aviation’s journey to ‘net zero’. Not only did these tests show that our Trent XWB-84 engine can run on 100% SAF, but the results also show how additional value can be unlocked from SAF through reducing non-CO2>
The research team has reported its findings in the Copernicus journal Atmospheric Chemistry & Physics (ACP) as part of a peer-reviewed scientific process, and provides the first in-situ evidence of the climate impact mitigation potential of using pure, 100% SAF on a commercial aircraft. The ECLIF3 programme, which also includes researchers from the National Research Council of Canada and the University of Manchester, conducted in-flight emissions tests and associated ground tests in 2021.