If we can have flying machines like the Osprey whose rotors turn into propellers, then today’s invention is another form of slightly unlikely aircraft.
Imagine a large, twin rotor helicopter, powered by two gas turbines and capable of vertical takeoff.
At altitude, the rotor blades on each axle slide around and link together -forming two sets of fixed, conventional wings (grey).
After a few seconds of steep glide, the jet turbine exhaust(yellow) is directed backwards to provide propulsion (and, via the new wings, lift).
