Wind tunnel test device and its design method

A wind tunnel test and test section technology, applied in design optimization/simulation, special data processing applications, etc., can solve problems such as assessment, difficult multiple states, etc., to achieve the effect of shortening the test period and high engineering application value

Active Publication Date: 2021-07-13
BEIJING AEROSPACE TECH INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a wind tunnel test device and its design method, which can solve the problem that it is difficult to perform multiple state assessments in a single wind tunnel test

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  • Wind tunnel test device and its design method
  • Wind tunnel test device and its design method
  • Wind tunnel test device and its design method

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Embodiment Construction

[0018] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, for purposes of explanation and not limitation, specific details are set forth in order to provide a thorough understanding of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details.

[0019] It should be noted here that, in order to avoid obscuring the present invention due to unnecessary details, only the device structure or processing steps closely related to the solution according to the present invention are shown in the drawings, and the relationship with the present invention is omitted. Little other details.

[0020] In order to enable the wind tunnel test of a single vehicle to assess a variety of test states, thereby greatly improving efficiency, reducing cycle time and expenses. Embod...

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Abstract

Embodiments of the present invention provide a wind tunnel test device and a design method thereof, which relate to wind tunnel test assessment technology and can solve the problem that it is difficult to conduct multiple state assessments in a single wind tunnel test. The test and assessment device of the wind tunnel has the characteristics of multi-stage compression, and the surface profile of the multi-stage compression area is a line segment L bent by N segments 1 , L 2 , L 3 ..., L n pose, L 0 It is the length of the flow direction of the test section with an angle of attack of zero. Through the idea of ​​continuously and gradually changing the angle of attack, a stable step-type heat flow distribution along the flow direction can be obtained in the same vehicle wind tunnel test, and it is possible to simultaneously assess the material in a variety of conditions in one vehicle test. The response in the thermal state, while considering the purity of the flow field, intersects the multi-stage compression oblique shock waves at one point, avoiding the multi-channel shock wave reflection from interfering with the flow field. It overcomes the disadvantages of low efficiency, long period and high cost of the original material assessment test, greatly shortens the test period, and has high engineering application value.

Description

technical field [0001] The invention relates to the technical field of wind tunnel test assessment, in particular to a wind tunnel test device and a design method thereof. Background technique [0002] Wind tunnel tests can provide a simulated environment close to real flight conditions, and are one of the effective means to assess structural / thermal protection materials. The structure and thermal protection of hypersonic vehicles require a large number of wind tunnel tests, especially in the demonstration of the scheme and the screening of materials. It is necessary to thoroughly assess the anti-ablation, anti-oxidation and heat insulation properties of the materials. Generally speaking, the preparation time for wind tunnel tests is long and the efficiency is low, and the test for one train can only assess one state, which brings huge cycle costs and funding costs to the development process, forming a bottleneck in program demonstration and restricting the entire The progr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20
CPCG06F30/20
Inventor 陈凯王战郭帅帅
Owner BEIJING AEROSPACE TECH INST
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