The X3 hybrid helicopter has opened the frontiers of aviation by attaining a speed milestone of 255 knots (472 km/hr) in level flight on June 7. Several days before this accomplishment, the X3 reached a speed of 263 knots (487 km/hr) during a descent. With these two successes, the X3 surpasses the unofficial speed record for a helicopter.
Eurocopter achieved the historic 255-knot speed milestone with the X3 flying at an altitude of around 10,000 feet during a 40 minute test flight over southern France near Istres. It marks the latest in a growing list of achievements for the X3, which is Eurocopter's technology demonstrator for an advanced, cost-effective vertical takeoff and landing (VTOL) transportation system that offers the speed of a turboprop-powered aircraft and the full-flight capabilities of a helicopter.
