Circular wing aircraft

Claim 1

An improved aircraft including in combinataion, a main airfoil having a first certain outline configuration when viewed from the top thereof, respective elongated vertical members on opposite sides of and equally spaced from the fore-and-aft centerline of said main airfoil, said vertical members extending generally parallel to said fore-and-aft axis throughout said airfoil from the leading edge thereof to the trailing edge thereof and positioned inboard of the outboard edges of said airfoil to divide said main airfoil into a relatively independent central section between said members, and respective outer sections outboard of said members, said members projecting above the upper surface of said main airfoil and projecting below the under surface of the main airfoil to form tunnel-like spaces for the flow of air from the leading edge to the trailing edge of the airfoil over and under the central section thereof, said outer sections extending rearwardly of said central section to provide outer section inboard edges extending rearwardly from the trailing edge of said central section to the trailing edges of said outer sections, said inboard edges and said central section trailing edge forming a second certain outline configuration, a horizontal stabilizer formed with a leading edge and outer edges in said second outline configuration, and means including upwardly extending portions of said vertical members adjacent to the trailing edges of said outer sections to provide vertical stabilizers for mounting said horizontal stabilizer above said main airfoil and with the leading edge of said horizontal stabilizer spaced rearwardly from said central section trailing edge, said central section being formed with a concave bottom surface and said outer sections being formed with convex bottom surfaces.