Aerodynamic layout for high altitude long endurance serial wing aircraft by adopting difference of upper and lower dihedral angles

The invention discloses an aerodynamic layout for a high altitude long endurance serial wing aircraft by adopting a difference of upper and lower dihedral angles and belongs to the field of aerodynamic layout design of the aircraft. In the aerodynamic layout of the aircraft, a cylindrical section fuselage, front wings and rear wings at higher aspect ratio and V-shaped empennages are adopted by the aircraft, wherein the front wings are arranged as high wings, have upper dihedral angles and are symmetrically mounted on a front half section of the fuselage; the rear wings are arranged as low wings, have lower dihedral angles and are symmetrically mounted on a rear half section of the fuselage; two V-shaped empennages are arranged, are symmetrically mounted on the rear half section of the fuselage and have upper dihedral angles at 45 DEG C; a fanjet is arranged above the tail part of the fuselage. According to the invention, under the condition that the same wing area is guaranteed, a shorter span is adopted, the structure efficiency is increased, the requirement for the airport landing condition is reduced and the use capacity of the battlefield environment is enhanced; larger spans are adopted by the front wings and shorter spans are adopted by the rear wings; the beneficial interference of the rear wings to the front wings is fully utilized; the harmful interference of the front wings to the rear wings is reduced.