Eurocopter X3 hybrid helicopter hits 232 knots

Eurocopter X3 hybrid helicopter hits 232 knots: "After undergoing a planned upgrade to its gearbox that enabled it to operate at full engine power, Eurocopter's X3 hybrid helicopter demonstrator has surpassed its original speed target of 220 knots (407 km/h or 253 mph). In a flight on May 12, the X3 maintained a true airspeed of 232 knots (430 km/h or 267 mph) for several minutes during stable, level flight."