Aircraft airfoil surface structure

Abstract

The invention relates to an aircraft airfoil surface structure which is composed of a tree-shaped metal inner core and a composite material skin, in particular to a structure of a rudder wing surfaceat the tail part of a hypersonic aircraft used under a high temperature service environment. The airfoil surface structure comprises the inner core, the skin, a rudder shaft and connection bolts; theinner core is designed to be of a tree-like I-shaped beam structure and prepared from a GH4099 high temperature alloy, and the inner core has the excellent mechanical property under the high temperature environment; the skin is prepared from a C/SiC composite material, and is good in heat resistance and density; the inner core and the skin are connected with the aircraft through the rudder shaft,and the rudder shaft is prepared from the GH4099 high temperature alloy; and the inner core and the skin are connected through ceramic bolts. The airfoil structure can guarantee the mechanical property and the heat resistant property of the aircraft under the high temperature and hypersonic flying environment, and improves the flight stability.

Description

technical field [0001] The invention belongs to the field of aerospace, and relates to an aircraft wing surface structure. Background technique [0002] The wing surface is an important component of the aircraft. It refers to various aerodynamic surfaces of the aircraft. It supports the weight of the aircraft and realizes maneuvering flight by generating lift, which has an important impact on ensuring the overall performance of the aircraft. The traditional structural forms of hypersonic vehicle airfoil mainly include skin skeleton airfoil, integral structure airfoil and sandwich structure airfoil, etc. Designers refer to finite elements or select a certain airfoil structure layout based on experience to make certain improved designs , and a single material is often used in the design process. The improved airfoil structure designed based on experience has a small design space, it is difficult to achieve the optimal material utilization rate, and the mechanical properties a...

AI Technical Summary

Problems solved by technology

[0005] In order to avoid the deficiencies of the prior art, the present invention proposes an aircraft airfoil structure to overcome the defects of poor mechanical properties of the existing airfoil structure under high temperature and hypersonic flight environments

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