Eurocopter X3
Eurocopter began a X3 flight testing programme in September 2010 that combines the vertical takeoff and landing capabilities of a helicopter with an aircraft's fast cruise speeds of more than 220 kts. After achieving the initial true airspeed goal of 180 kt (333 km/hr) in November 2010 at a reduced level of engine power, the X3 underwent its planned gearbox upgrade and safety inspection. Since returning to flight, the X3 quickly demonstrated its performance at full engine power, including impressive climb and descent rates as well as manoeuvrability while also confirming the hybrid propulsion system's capabilities for acceleration and deceleration. |