Eurocopter is claiming to have beaten Sikorsky’s X2 unofficial speed record by reaching 263 kt. in a dive with its X3 high-speed demonstrator. During trials in early June, Eurocopter test pilots flying at the Istres test base near Marseille, France, also achieved 255 kt. in level flight, breaking the X3’s previous top speed of 232 kt. set in May 2011. The new round of high-speed trials follows a 2012 lay-up during which engineers tweaked the aircraft’s gearbox and allowed it to ...


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