Underwater vehicle bionic dynamic variable-structure skin with intelligent self-adaptive resistance reduction function

Abstract

The bionic dynamic variable-structure skin comprises a front section and a rear section, each of the front section and the rear section is formed by compositing a top layer, a middle layer and a bottom layer, the top layers of the front section and the rear section are flexible organic polymer films, the bottom layers of the front section and the rear section are ceramic heating pieces, and the ceramic heating pieces are arranged in the middle of the front section and the rear section. The middle layer of the front section is made of a temperature-control phase-change material, the middle layer of the rear section is a metal flat plate, a plurality of rhombic holes are formed in the metal flat plate, and the rhombic holes are filled with the temperature-control phase-change material. The heat production amount can be controlled by adjusting the bottom layer ceramic heating sheet, so that the temperature control phase change material deforms to a corresponding degree, the process that wrinkles of the dolphin skin and body thorns of the dolphin skin change along with the change of the speed of external water flow is simulated, the viscosity of water flow on the surface of the skin can be reduced through redundant heat, and the skin quality is improved. And finally, the skin has a self-adaptive resistance reduction function.

Description

technical field [0001] The invention relates to an underwater vehicle skin, in particular to an underwater vehicle bionic dynamic metamorphic skin with intelligent adaptive drag reduction. Background technique [0002] Nowadays, autonomous underwater vehicles (AUVs) are widely used in civil, military and commercial fields. In the process of AUVs developing towards intelligence, autonomy and modularization, the sensitivity of AUVs has become the main factor limiting its development. . Therefore, how to reduce the flow resistance of AUVs and improve their speed has become an important issue for future AUV research. At present, the more mature drag reduction technologies are passive drag reduction technologies: non-smooth microstructure drag reduction, flexible surface drag reduction, and superhydrophobic surface drag reduction, etc. The disadvantages are more obvious, that is, the drag reduction rate varies with different flow velocities. The curves under pressure and pressu...

AI Technical Summary

Problems solved by technology

Nowadays, the more mature drag reduction technologies are all passive drag reduction technologies: non-smooth microstructure drag reduction, flexible surface drag reduction and super-hydrophobic surface drag reduction, etc. The disadvantages are obvious, that is, the drag reduction rate varies with different flow velocities. The curves under pressure and pressure are fixed, and there are situations where the drag reduction rate is low or even no drag reduction at a specific incoming flow velocity

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