A flutter model protection method and structure based on safe and controllable damage

A flutter model and flutter technology, applied in the field of flutter model protection methods and structures, can solve problems such as inability to guarantee safety, high risk of wind tunnels and models, and economic losses

Active Publication Date: 2022-05-06
SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In order to prevent the model itself from being damaged and debris (such as lead weights, external objects, etc.) , In addition, the emergency shutdown is carried out according to the intuitive judgment of the test personnel, and the computer monitors the signal in real time, and the emergency shutdown of the program is implemented through the preset threshold value. In some cases, the method of protective line and air brake stop is not applicable. However, manual or programmed emergency shutdown cannot guarantee 100% safety, so the wind tunnel and the model are at great risk. Once damaged, it will not only affect the progress of the test, but also cause economic losses.

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  • A flutter model protection method and structure based on safe and controllable damage
  • A flutter model protection method and structure based on safe and controllable damage

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Embodiment Construction

[0032] In order to make the purpose, technical solution and advantages of the application more clear, the technical solution in the embodiment of the application will be described in more detail below in conjunction with the drawings in the embodiment of the application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the application. The embodiments described below by referring to the figures are exemplary, and are intended to explain the present application, and should not be construed as limiting the present application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application. Embodiments of the present application will be described in detail below in conjunction with th...

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Abstract

The application belongs to the field of flutter wind tunnel tests, and in particular relates to a flutter model protection method and structure based on safe and controllable damage. The protection method includes: obtaining a flutter wind tunnel model, installing an anti-flutter structure on the flutter sensitive part of the flutter wind tunnel model, and the anti-flutter structure is designed according to the following principles: when flutter occurs, the The anti-flutter structure is prior to the destruction of other parts of the flutter wind tunnel model; after the anti-flutter structure falls off from the flutter wind tunnel model, the flutter speed of the flutter wind tunnel model will increase; After the anti-flutter structure falls off from the flutter wind tunnel model, it will not cause severe wind tunnel damage to the flutter wind tunnel model. This application designs the anti-flutter structure, so that the flutter wind tunnel model can achieve the protective effect under the premise of ensuring normal blowing, especially suitable for continuous wind tunnels, which is conducive to safer and smoother flutter model wind tunnel tests Research.

Description

technical field [0001] The application belongs to the field of flutter wind tunnel tests, in particular to a flutter model protection method and structure based on safe and controllable damage. Background technique [0002] Flutter test using wind tunnel model is an indispensable research content in the process of aircraft design, and it is also a necessary means to verify theoretical research. Since flutter may cause sudden damage, the possibility of model being destroyed during wind tunnel test is also high. very big. In order to prevent the model itself from being damaged and debris (such as lead weights, external objects, etc.) , In addition, the emergency shutdown is carried out according to the intuitive judgment of the test personnel, and the computer monitors the signal in real time, and the emergency shutdown of the program is implemented through the preset threshold value. In some cases, the method of protective line and air brake stop is not applicable. Manual o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M9/08B64F5/60
CPCG01M9/08B64F5/60
Inventor 王赫喆王标苍峰于佳鑫
Owner SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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