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Sponsored by Rolls Royce

Rolls-Royce has customers in more than 150 countries, comprising more than 400 airlines and leasing customers, 160 armed forces and navies, and more than 5,000 power and nuclear customers.

Rolls Royce flies greener combustion engine

Military Africa by Military Africa
November 18, 2022
in Press Release
Reading Time: 2 mins read
Rolls-Royce ALECSys demonstrator engine on Flying Testbed FTB at Tucson, USA, Pioneering Sustainable, Flight, Boeing 747

Rolls-Royce ALECSys demonstrator engine on Flying Testbed FTB at Tucson, USA, Pioneering Sustainable, Flight, Boeing 747

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Rolls-Royce has successfully entered the final phase of testing its ALECSys (Advanced Low Emissions Combustion System) demonstrator engine, this time at altitude. The demonstrator took to the skies attached to the Rolls-Royce Boeing 747 Flying Test Bed in Tucson, Arizona, USA.

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The test programme has included flights up to 40,000 feet as well as a number of engine relights at different conditions, all of which have been successful.

Rolls-Royce ALECSys demonstrator engine on Flying Testbed FTB at Tucson, USA, Pioneering Sustainable, Flight, Boeing 747, Take off

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.

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The ALECSys engine demonstrator has previously completed a comprehensive set of ground tests,Bincluding icing, water ingestion, ground operability, emissions and running on 100%bSustainable AviationbFuel (SAF).

Simon Burr, Director of Product Development and Technology, Civil Aerospace, Rolls-Royce, said: “We are
very pleased to see the ALECSys engine now flying. This flight testing is a key part of our drive to not only
improve engine efficiency but all aspects of environmental performance. It is part of the wider Rolls-Royce
sustainability strategy, which also includes support for the increased use of sustainable aviation fuels (SAF)
and intensive research into alternative propulsion architectures and technologies.”

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 UK by the Aerospace Technology Institute and Innovate UK.

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Tags: AircraftRolls-Royce

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