Aerodynamic layout of high altitude long flight time tandem wing aircraft adopting tail wing with high back wing support

Abstract

The invention discloses an aerodynamic layout of a high altitude long flight time tandem wing aircraft adopting a tail wing with high back wing support and belongs to the field of aerodynamic layout designs of aircrafts. According to the aerodynamic layout disclosed by the invention, the aircraft comprises a cylindrical section body, front wings and a rear wing with a large aspect ratio, V-shaped tail wings and a vertical fin, wherein the front wings are lower single wings and are symmetrically mounted on the front half section of the body; totally two V-shaped tail wings are symmetrically mounted on the rear half section of the body; the rear wing is mounted at the tip of the V-shaped tail wings in a V tail supporting manner; the vertical fin is mounted below the tail of the body; and an engine is mounted above the tail of the body. Large elongation can be avoided by using the tandem wing layout under the condition that the same wing area is guaranteed, the requirements on the structural strength and rigidity of the wings are further reduced, the weight of the aircraft is lightened, and the effective load is increased; and with the adoption of a reasonable aerodynamic surface fit manner, the aircraft has excellent flight stability and controllability under the condition that excellent aerodynamic characteristics are guaranteed.

Description

technical field [0001] The invention belongs to the field of aircraft aerodynamic layout design, and in particular relates to an aerodynamic layout of a high-altitude long-endurance tandem-wing aircraft that adopts a "V"-shaped support tail so that the rear wing is placed on top. Background technique [0002] High-altitude and long-endurance aircraft has its special uses in long-term battlefield reconnaissance and high-altitude atmospheric detection. Especially in recent years, the development of high-altitude and long-endurance aircraft as a multi-functional combat platform has received extensive attention. However, high-altitude long-endurance aircraft has high requirements on flight performance and aerodynamic quality, especially a large lift-to-drag ratio under the premise of sufficient lift. [0003] In order to meet the above requirements, conventional layouts with super large aspect ratio and large wingspan are usually adopted at home and abroad. When the flying spee...

AI Technical Summary

Problems solved by technology

The layout consists of two wings, front and rear, where the rear wing interferes favorably with the front wing, but the front wing interferes negatively with the rear wing

In addition, the interference intensity between the two wings changes with the change of the angle of attack, so that the lift increment of the two wings also changes, resulting in a large range of movement of the aerodynamic focus of the whole aircraft, which affects flight performance.

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