A bionic micro-nano structure for underwater drag reduction

Abstract

The invention discloses an underwater drag reduction bionic micro-nano structure which comprises U-shaped structures of bionic dolphin spine skin and sawtooth structures of bionic mosquito stylets. Aswimming bladder comprises a conical body structure at the front end and a cylindrical body structure at the rear end, the sawtooth structures are distributed on the surface of the conical body structure, and the U-shaped structures are distributed on the surface of the cylindrical body structure. According to the invention, the micro structures of bionic dolphin spine skin and the micro structures of bionic mosquito stylets are adopted, and the novel micro-nano combined structure is formed by combining the two micro-structures and is applied to the swimming bladder, and a good drag reductioneffect is achieved.

Description

technical field [0001] The invention belongs to the technical field of bionic micro-nano structures, and in particular relates to an underwater drag-reducing bionic micro-nano structure. Background technique [0002] At present, my country has taken the development of marine economy and building a marine power as an important development strategy. Vessels such as ships and warships play an important role in marine construction economy and marine defense. The operating speed and energy consumption rate of the underwater vehicle are important indicators for evaluating its performance. The operating speed determines the performance of the vehicle, and the energy consumption rate determines the endurance and operating cost of the vehicle. The running speed and energy consumption rate of the vehicle are not only related to the engine efficiency, but the most important influencing factor is the resistance of the vehicle in water. [0003] The energy consumed by the flying body t...

AI Technical Summary

Problems solved by technology

[0004] At present, the bionic surface structure design has achieved a lot of results and has been applied in practice. The method used is to simplify the drag reduction morphology into continuous grooves for research, but the drag reduction effect of the designed drag reduction surface is still unsatisfactory. Monotonous structure and other issues

Moreover, most of the current processing methods for bionic structures are traditional mechanical processing and surface etching, which have problems such as low processing accuracy, complicated process, and easy peeling off of the coating.

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