To expand slightly on whats been said, 3d flight IS where the wing is stalled ie the Angle of Attack of the wing is greater than about 15 degrees. However the control (and some lift) is generated by the blown slipstream of the propwash over very large control surfaces with around 50 degrees (or more) of throw. Also the CG is set to be quite aft such that at the stall the plane won't pitch forward out of the stall. This makes it harder to fly, but capable of the 3d maneuvers. And obviously a powerful engine swinging a large props helps!

Andy