Rolls-Royce has completed tests of the latest build of its new two-shaft engine core, dubbed "Core 3/2d" by the manufacturer, which will eventually form the heart of its Advance2 future two-shaft engine programme.
Lasting 40h and carried out at Stuttgart University's altitude test facility the trials are part of R-R's E3E research programme.
Tests included operation of a lean-burn combustion system in simulated bad weather during which Core 3/2d operated "safely and successfully" says R-R in a statement. It also performed windmill re-lights in conditions equivalent to a tropical hailstorm. Emission and performance measurements and functional tests were also carried out.
Dr Karsten Mühlenfeld, Rolls-Royce, director corporate and engineering, Germany says: "These 40 hours of testing are another step forward in our continued work to develop environmentally friendly technologies."
Dr Holger Klinger, Rolls-Royce, chief project engineer technology programmes, Germany adds: "The innovative combustor exceeded all expectations in terms of NOx reduction and engine stability under adverse operational conditions. Core 3/2d achieved emissions levels up to 60% lower than current CAEP6 regulations."