A short beam sandwich small elastic wing structure

Abstract

The invention relates to a short-beam sandwich small-sized wing structure, comprising a half-section airfoil (1), a front beam (2), a rear beam (3), an airfoil cover (6) and a core material (5); The root of the wing structure has a front beam (2) and a rear beam (3), the length of which is 20%-40% of the span length, the inside of the small wing is a cavity, and the airfoil of the small wing is divided into a half-section airfoil (1) and There are two parts of the airfoil cover (6), and there is no skin on one side of the half-cut airfoil (1), and the airfoil cover (6) is connected with the half-cut airfoil (1) to form a complete small-sized bomb wing airfoil; The cavity inside the wing is completely filled with core material (5). The short-beam sandwich small-sized elastic wing structure of the present invention has the advantages of high weight reduction efficiency, good bearing capacity, and the skin is not easy to lose stability.

Description

technical field [0001] The invention belongs to the field of wing structure design and relates to a small wing structure, in particular to a short beam sandwich small wing structure. Background technique [0002] Due to the small aerodynamic load of the small wing structure, the lightweight structure design method is often used in the design. Generally, single, double beam or radial beam structure is used, and the small wing structure is directly filled with high density without passing through the beam structure. Sandwich structure to achieve load bearing and weight reduction effects. [0003] Using the existing beam-type or high-density sandwich small-sized wing structure, there will be the following problems: in order to avoid the instability of the wing surface, the number of beams needs to be large, and the strength and stiffness will be relatively large, resulting in excessive weight ;The high-density sandwich structure can solve the problem of airfoil instability, bu...

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Problems solved by technology

[0003] Using the existing beam-type or high-density sandwich small-sized wing structure, there will be the following problems: in order to avoid the instability of the wing surface, the number of beams needs to be large, and the strength and stiffness will be relatively large, resulting in excessive weight ;The high-density sandwich structure can solve the problem of airfoil instability, but the joint surface between the core material and the wing root has a sudden change in stiffness and poor structural continuity, which will cause insufficient strength. If the density of the core material is increased to increase the strength, the small The weight of the wing structure, which leads to the consequences of low weight reduction efficiency

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