Controlled manufacturing method for shark imitated drag reduction surface structure under variable environment

A manufacturing method and surface structure technology, applied in the direction of the fuselage bulkhead, etc., can solve the problems of increased resistance and difficulty in meeting the complex and changeable environmental conditions of the vehicle, and achieve high manufacturing efficiency, excellent drag reduction effect, and deformation The effect of easy operation

Active Publication Date: 2013-01-02
BEIHANG UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the problem is that a large number of experiments have proved that the determined groove size has a drag reduction effect within a certain flow velocity range, and may produce a drag increase effect if it is lower than or exceeds the flow velocity range
Therefore, it is difficult to meet the complex and changeable environmental conditions of the vehicle only by relying on the bioprototype drag-reducing morphology and a single drag-reducing morphology.

Method used

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  • Controlled manufacturing method for shark imitated drag reduction surface structure under variable environment
  • Controlled manufacturing method for shark imitated drag reduction surface structure under variable environment
  • Controlled manufacturing method for shark imitated drag reduction surface structure under variable environment

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Embodiment Construction

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0037] see figure 1 As shown, the present invention is a manufacturing method for imitating a shark-like drag-reducing surface structure in a variable environment. The specific steps of the method are as follows:

[0038] Step 1: Prepare rolling negative template device

[0039] (A) Cut the shark skin 200×100mm, wash it with clean water and deionized water for 3-5 times respectively, and complete the cleaning of the shark skin;

[0040] (B) In order to ensure that the shark skin remains flat after fixing and to avoid damage to its scale structure by the traditional method of flattening with heavy objects, nails are fixed along the shark skin to tighten it on the wooden frame, as shown in figure 2 shown;

[0041] (C) Soak the washed shark skin completely in 2.5% glutaraldehyde solution, place it in a constant temperature environment at 4°C ...

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Abstract

The invention discloses a controlled manufacturing method for a shark imitated drag reduction surface structure under a variable environment. The method comprises the following steps of: 1, preparing an original-ratio sharkskin biological female template; 2, designing shape parameters of a deformed imitated shark required to be manufactured according to the requirement of an application environment; and 3, preparing a variable-proportion bionic drag reduction skin according to the application environment. The variable-proportion bionic sharkskin shaped drag reduction skin prepared by using the method has a functional structure completely in accordance with the original sharkskin shape, but has different shape parameters. By using the method for making the bionic drag reduction skin, the size of the surface shape of the skin can be adjusted according to the parameters such as common speed, different parts of the outer surface and the medium viscosity of an application object, so that the drag reduction effect of the shark imitated drag reduction skin is in an optimal state. The method has high practical value and broad application prospect in the technical field of bionic manufacturing.

Description

technical field [0001] The invention relates to a manufacturing method for adjusting and controlling the drag-reducing surface structure of an imitation shark in a changeable environment, more particularly, it refers to a method of combining bio-replication forming technology and deformation-replication forming method to produce bionic shark skin shape reduction according to different application environment conditions. Preparation method of barrier skin. It belongs to the field of bionics production. Background technique [0002] During the driving process of the vehicle, the energy and power are used to overcome the running resistance, and for most vehicles, the surface friction resistance generally accounts for more than 30% of the total resistance, and for some vehicles, the friction resistance is even as high as 80% of total resistance. Therefore, choosing a reasonable method to overcome the frictional resistance between the surface and the medium is of great signific...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C1/12
Inventor 陈华伟张鑫潘骏峰马灵犀张德远
Owner BEIHANG UNIV
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