Airframe structure and unmanned aerial vehicle thereof with upper and lower vertical tail wings

An airframe structure, comprising:

• a main airframe;
• at least two main wings, which are symmetrically provided on two sides of the main airframe, wherein each of the at least two main wings is provided with a propeller and a motor to provide power to the propeller;
• an upper vertical tail wing, which is provided at an upper end of the main airframe;
• and
• a lower vertical tail wing, which is provided at a lower end of the main airframe;
• wherein the upper vertical tail wing is provided thereon with at least two horizontal tail wings, the at least two horizontal tail wings are provided on left and right sides of the upper vertical tail wing, airfoils of the at least two horizontal tail wings and airfoils of the upper vertical tail wing are perpendicular to each other, the airfoils of the at least two horizontal tail wings and airfoils of the at least two main wings are parallel to each other, each of the at least two horizontal tail wings are located directly above a corresponding one of the at least two main wings, a first ratio of a distance a from an end of each of the at least two horizontal tail wings to a symmetry plane of the main airframe to a distance b from an end of each of the at least two main wings to the symmetry plane of the main airframe is (30-35):(95-100), and a second ratio of the distance a to a vertical distance d from a bottom surface of each of the at least two horizontal tail wings to an upper surface of the corresponding one of the at least two main wings is 32:36.