Patent ID: 6364251
Filing Date: 2002-04-02
Classification: B64C,B64D,Y10S

Abstract:
An airwing structure comprising:a. an airfoil structure having a downward arc for producing lift by aerodynamic forces exerted thereon, wherein the airfoil structure has a leading edge, a trailing edge, a left edge, a right edge, a central wing root, a thrust line, and a plurality of chord lines, and wherein the airfoil structure comprises of a substantially flexible surface skin; b. a main frame attached to the airfoil structure comprising a leading bar and a supporting bar, wherein the leading bar is fixedly attached to about the leading edge supporting and maintaining the leading edge from collapsing, and wherein the supporting bar is attached to the leading bar and attached to about the trailing edge supporting and maintaining the airfoil structure from collapsing; and c. a means for providing a downward and a forward tension on the leading bar substantially about the left edge and substantially about the right edge of the airfoil structure to tighten the substantially flexible surface skin so the chord lines of a substantial portion of the airfoil structure are aligned with the central wing root and the thrust line to have the same angle of attack during the flight condition.