Do not trust its name, it is not about a green hybrid but about a hybrid helicopter, between plane and helicopter
X3 Eurocopter uses Dauphin's airframe: equipped with two turboshafts that power a five-blade main rotor system, along with two propellers installed on short-span fixed wings; therefore combining characteristics of a plane (speed and height) with those of a helicopter (in particular vertical takeoff)
On September 6th, the X3 hybrid realized its inaugural flight, and the validation of the stage 1 happened at the end of November with the achievement of a 180 Knots speed (333 kph.)
In-flight test confirmed the stability of the helicopter which reached a 12500 feet height (3810 meters) and performed maneuvers with left and right turns at bank angles of up to 60 degrees.
According to its pilots le X3 behaved exactly as the simulations had predicted, as a result Eurocopter passes on to phase 2: reach a steady cruising speed of 220 Knots (407 km/h)
The applications envisaged by Eurocopter are multiple, long distance search and rescue missions (SAR), coast guard duties, passenger transport, urban shuttles, and Special Forces’ operations, troop transportation, combat SAR and medical evacuation