Flexible MEMS resistance reducing covering and method of manufacturing the same

A manufacturing method and flexible technology, applied in the manufacture of microstructure devices, impedance networks, gaseous chemical plating, etc., can solve the problems of high power consumption, cavitation noise and shortened flight range, and achieve good drag reduction effect.
CN101486438BInactive Publication Date: 2011-01-26WUXI RES INST OF APPLIED TECH TSINGHUA UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUXI RES INST OF APPLIED TECH TSINGHUA UNIV
Publication Date
2011-01-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a flexible MEMS resistance-reducing skin and a manufacturing method thereof used for reducing skin friction resistance during the advancing of on-water or underwater vehicles, which employs micro-fine resident bubbles to reduce resistance and belongs to the fields of micro-machinery and fluid dynamics. The upper surface of the skin is a surface layer coated with micro-pit arrays and processed by surface soakage; electrolytic anodes and cathodes of comb-shaped micro-fine planar metal, which are attached on an insulating layer, are arranged at the bottom of the micro-pits; a flexible substrate is positioned below the insulating layer; wire leading terminals for electrodes are arranged on the lower surface of the skin; and both the surface layer and the substrate are made by flexible materials. The overall thickness of the resistance reducing skin is at sub-millimeter level, and the skin is in the status of flexible film. The manufacturing method is an MEMS micro machining technique compatible with the flexible MEMS technology. The flexible MEMS resistance-reducing skin is coated on the outer surfaces of the on-water or underwater vehicles, with power thereof supplied by the on-water or under-water vehicles. Micro-bubbles stably residing in the micro-pits are formed by water electrolysis reaction to coat most parts of the surfaces of the on-water or under-water vehicles, thus realizing the function of reducing skin friction resistance.
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Description

technical field

[0001] The invention belongs to the technical field of micro-machines and fluid dynamics, and particularly relates to a flexible MEMS (Micro Electro-Mechanical System) drag reduction skin and a manufacturing method thereof. Background technique

[0002] The traveling resistance encountered by the water surface and underwater vehicle when driving includes pressure difference resistance, vortex resistance and surface friction resistance, among which surface friction usually occupies the largest proportion. For vehicles with large length and aspect ratio or aspect ratio Especially so. Therefore, reducing its surface frictional resistance is of great significance: under certain power conditions, reducing frictional resistance will effectively increase the speed and range of the vehicle; or conversely, on the premise of ensuring the speed and range, the volume of the power system can be reduced and weight, saving space and payload, and improving the performance o...

Claims

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