A toy aircraft that has concentric, counter-rotating upper and lower rotors. Each rotor is rotated by a corresponding drive shaft. The shafts are arranged concentrically with one another. A plane of reference is defined as a plane perpendicular to the shafts. Each rotor includes first and second pairs of rotor blades. Each rotor blade of the first pair has a proximal end with a first pitch being fixed with respect to the plane of reference, and a distal end with a second pitch being fixed with respect to a plane of rotation, the plane of rotation being defined by a path of travel of the distal end during rotation. Each rotor blade of the second pair has a proximal end with a first pitch being adjustable with respect to the plane of reference, and a distal end with a second pitch being adjustable with respect to the plane of reference.