Uploaded November 2022 | Updated September 2026, 3 weeks ago
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. 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.
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.
Rolls-Royce pioneers cutting-edge technologies that deliver clean, safe and competitive solutions to meet our planet’s vital power needs.
Find out more here: rolls-royce.com
Join the conversation:
Facebook.com/RollsRoyceGroup
Twitter.com/RollsRoyce
Instagram.com/RollsRoyceGroup
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. 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.
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.
Rolls-Royce pioneers cutting-edge technologies that deliver clean, safe and competitive solutions to meet our planet’s vital power needs.
Find out more here: rolls-royce.com
Join the conversation:
Facebook.com/RollsRoyceGroup
Twitter.com/RollsRoyce
Instagram.com/RollsRoyceGroup










