Rolls-Royce low-emission combustion system takes off into flight test phase

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-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.

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).

Continue reading press release https://www.rolls-royce.com/media/press-releases/2022/17-11-2022-rr-low-emission-combustion-system-takes-off-into-flight-test-phase.aspx