AviationNews – Airbus has launched a landmark three-year flight-test campaign using an A321neo aircraft fitted with full-scale wingtip extensions to evaluate slighter, aerodynamically efficient wing designs. The ambitious research initiative aims to significantly reduce fuel consumption and carbon emissions for the next generation of single-aisle commercial airliners. Announced at the Farnborough International Airshow, the flight-test series represents a major operational milestone in the aerospace giant's broader…