Method and rudder surface of composite material liquid forming ultralight aircraft rudder surface

Abstract

The invention belongs to the technical field of composite molding technologies, and particularly discloses a method for molding an ultra-light plane control surface through a composite liquid. The method comprises the steps of manufacturing parts like upper and lower edge strips and webs of a beam; carrying out vacuumizing and curing molding; putting the upper and lower edge strips and the webs on an aluminium plate to be laid, and forming a beam structure; carrying out secondary vacuumizing, introducing resin, and carrying out curing and demolding to obtain the beam structure; and manufacturing upper and lower skin, assembling the upper and lower skin with the beam, supporting hollow parts of the upper and lower skin through fine sand or air inflation during assembly, and after bonding and curing molding, discharging fine sand or air. The invention further provides the ultra-light plane control surface based on the technological method. The method has the advantages that glue injection is carried out on the webs and the lower edge strip through resin infiltration, and the vacuum introduction problem of complex three-dimension shapes is solved; and bags wrapping fine sand are adopted as a filler, so that bonding quality of the skin under high temperature and high pressure is guaranteed, the problem of taking out the filler in the skin is solved, and residues are avoided.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of aerospace composite material forming technology, and in particular relates to a method for forming an ultra-light aircraft rudder surface with a composite material liquid, and also provides an ultra-light aircraft rudder surface based on the method. [0003] Background technique: [0004] Advanced composite materials have excellent properties such as high specific strength, high specific modulus, fatigue resistance, and identity of material and structure. Since the 1960s, advanced composite materials have been widely used and become one of the four major aerospace materials. First, there are various molding processes for composite materials. The structure of the aircraft rudder surface generally includes upper skin, lower skin, and beams. The internal structure is relatively complex, especially for complex three-dimensional shapes, such as webs and lower edge parts, it is more troublesome to solidi...

AI Technical Summary

Problems solved by technology

The rudder surface structure of an aircraft generally includes upper skin, lower skin, and beam structures. The internal structure is relatively complex, especially for complex three-dimensional shapes, such as webs and lower edge parts, which are difficult to solidify and form.

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