Rolls-Royce has successfully entered the final phase of testing it's ALECSys (Advanced Low Emissions Combustion System) demonstrator engine, this time at altitude.
The demonstrator took to the skies attached to the Rolls-
The innovative lean-burn combustion system improves the pre-mixing of fuel and air prior to ignition, enabling cleaner combustion of the fuel, which results in lower NOX and particulate emissions.
The ALECSys engine demonstrator has previously completed a comprehensive set of ground tests, including icing, water ingestion, ground operability, emissions and running on 100% Sustainable Aviation Fuel (SAF).
The ability to test ALECSys low-emissions technology in flight will allow the verification of altitude operability performance and provides experience of operating a lean-burn system to maximise maturity ahead of a future entry into service.
ALECSys is part of the UltraFan engine demonstrator programme, which offers a 25% fuel saving over the first generation of Trent engines. The ALECSys programme is supported by the EU's Clean Sky programme, and in the
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