Fuel tank structure and manufacturing method thereof

Abstract

The invention belongs to accessory of aerospace equipment, in particular to a fuel tank structure and a manufacturing method thereof. The fuel tank structure is characterized in that the fuel tank structure comprises a fuel tank cover solidified by carbon fiber composite material and a hollow fuel tank case, wherein the fuel tank cover and the fuel tank case are bonded together, and the cross sections of the fuel tank cover and the fuel tank case are sequentially composed of an inner wall layer, a structural reinforcing layer and an outer wall layer from the inside to the outside. The fuel tank structure of a carbon fiber composite material is provided, the section of the fuel tank structure mainly consists of the inner wall layer, the structural reinforcing layer and the outer wall layer,the inner wall layer and the outer wall layer are paved with carbon fiber prepreg, the structural reinforcing layer is used for increasing the structural strength of the fuel tank, reducing the amount of carbon fiber, and reducing the cost of the fuel tank. At the same time, the structural reinforcing layer adopts the lightweight structural reinforcing layer, which effectively controls the weightof the fuel tank. Compared with the existing metal fuel tanks, the fuel tank structure has obvious quality reduction.

Description

Technical field [0001] The invention belongs to an aerospace equipment component, and particularly relates to a fuel tank structure and a manufacturing method thereof. Background technique [0002] There are more than 300 units engaged in the UAV industry in my country, of which about 160 are relatively large-scale enterprises, forming a complete R&D, manufacturing, sales and service system. Currently, there are hundreds of types of UAVs under development and in use. Small UAVs have gradually matured. Strategic UAVs have been tested, and attack UAVs have also successfully tested air-to-surface missiles. With the development of drones, especially the rapid development of civilian drones, people will pay more attention to the cost, development cycle and performance of drones. Only cost-effective products can win more customers. Only short development The cycle can keep up with technological progress. In drones, fuel is one of the necessary and important components. Its weight, se...

AI Technical Summary

Problems solved by technology

[0003] In the existing UAV fuel tank, whether it is the integral fuel tank or the split fuel tank, it is impossible to take into account the weight and sealing, the problem of cost and development cycle

Although the integral fuel tank plays a role in weight reduction, its sealing performance is poor, it is prone to leakage, and it is difficult to detect the location of the leak, which seriously restricts the use and maintenance of the drone; the split fuel tank is heavy, especially the hard fuel tank. The weight has increased significantly. Although the traditional soft fuel tank has played a certain role in weight reduction, its manufacturing cycle is long, the installation and fixing are complicated, and the weight reduction effect is average.

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