Aircraft with ducted fan and movable louvers over the ducted fan

An aircraft comprising:

• a wing,
• a ducted fan extending through the wing, and
• movable louvers positioned over the ducted fan,
• wherein the louvers comprise upper louvers positioned on a top surface of the wing and lower louvers positioned on a bottom surface of the wing,
• wherein each louver is movable between a basic position and an active position, wherein in the basic position of the louvers, the louvers are arranged flush with the wing such that the upper louvers and lower louvers cover inlet and outlet openings of the ducted fan, and, in the active position of the louvers, (i) the louvers are not arranged flush with the wing such that the upper louvers and lower louvers do not cover the inlet and outlet openings of the ducted fan, (ii) the upper louvers extend to an elevation above a top surface of the wing, and (iii) the lower louvers extend to an elevation below a bottom surface of the wing,
• wherein each louver of the upper louvers is a unitary member having a teardrop shape including a rounded end and a pointed end that is arranged opposite the rounded end,
• wherein, in the active position of the upper louvers, the pointed ends are located within the wing while the rounded ends are located outside of the wing, and, in the basic position of the upper louvers, the pointed ends are arranged substantially flush with the top surface of the wing,
• wherein each upper louver is positionable to a transition position when the aircraft transitions from vertical flight to horizontal flight, the transition position being defined between the active position and the basic position, and, wherein, as each upper louver moves from the basic position to the transition position, the pointed end of the upper louver is configured to move from a position that is substantially flush with the top surface of the wing to a position that is located inside of the wing.