Airbus has determined that an open-rotor-powered A320-class airliner is technically feasible. The next steps are to prove the concept is economically viable, then demonstrate the propulsion system in flight, which is planned under Europe’s Clean Sky 2 public-private research program. Speaking at the Greener Aviation 2014 conference in Brussels last week, Airbus powerplant safety engineer Charlie Rulleau said design studies have shown open-rotor engines can meet the latest Chapter 14 ...

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