A composite material rudder surface load loading device

Abstract

The invention provides a rudder plane loading device for a composite material. Two loading fixtures (1 and 2) are mounted on the two sides of the rudder plane of the composite material; the inner shaping planes of the two fixtures are the same as the outer shaping plane of an air rudder; an adapting block (3) is fixed on one side of one of the fixtures, and is positioned at the pressed center of the rudder plane; one end of a steel rope (4) is fixed at the adapting block (3), and the other end of the steel rope (4) is tied to a tensile force supply device (6). The loading device can be used for combined loading for a load with large bending moment and torque within the bearing range of strong rigidity and can be used for combing loading for torque and bending moment for the rudder plane made of composite material.

Description

technical field [0001] The invention relates to the technical field of hypersonic aircraft, in particular to a joint loading method of composite material rudder surface torque and bending moment load. Background technique [0002] The air rudder of the hypersonic vehicle not only bears the bending moment but also the torque load during the actual flight. Under the actual flight load conditions, evaluate the anti-bending moment, anti-torque ability of the air rudder component unlocking mechanism, and the unlocking ability under load conditions. It is the key issue to determine whether the air rudder can work stably. [0003] The bending moment borne by the air rudder is usually to load a normal force on the rudder surface, and make the resultant force point of the normal force pass through the pressure center of the rudder surface; for the loading of torque, it is usually to load a normal force on the rudder surface, through The normal force distribution of the rudder surfac...

AI Technical Summary

Problems solved by technology

[0006] Although the structure of the single-point loading method is simple, there is a difference between this loading method and the actual bearing method of the rudder surface (the actual rudder surface bears the surface load instead of the single-point load), and the single-point loading is likely to cause a large local stress at the loading point and deformation, resulting in damage to the rudder surface structure

[0007] Although the surface loading method using canvas is close to the actual force-bearing form of the structure, the bonding strength of the glue used to paste the canvas limits the load on the rudder surface. Limited time, the canvas is prone to debonding during the loading process, resulting in the test not being able to proceed normally

[0008] In addition, the single-point loading and canvas loading methods, the loading objects are limited to materials with high rigidity such as metal, and these two loading methods cannot be applied to materials with weaker strength such as fiberglass for the rudder surface

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