| 风洞试验中模型迎角的视频测量及精度研究 |
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| 引用本文： | 张征宇,喻波,黄诗捷,王水亮,孙岩.风洞试验中模型迎角的视频测量及精度研究[J].气动实验与测量控制,2013(1):88-92. |
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| 作者姓名： | 张征宇 喻波 黄诗捷 王水亮 孙岩 |
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| 作者单位： | [1]中国空气动力研究与发展中心空气动力学国家重点实验室,四川绵阳621000 [2]西南科技大学信息工程学院,四川绵阳621000 |
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| 基金项目： | 国家自然科学基金（51075385） |
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| 摘 要： | 模型迎角的准确测量是获得高精度风洞试验数据的基础（如失速点与最小阻力点的准确迎角值是飞行器研制与改型的关键数据）。为此，提出风洞试验中模型迎角的视频测量方法，分析其测量精度。2m超声速风洞中的多个迎角视频测量实例表明：该方法的迎角测量精度≤0．01°，可清晰分辨幅度为0．01。的迎角振动过程，而且该方法既不破坏模型的外形，又不改变模型的刚度与强度，测量精度不受模型振动影响，具有实用价值。
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| 关 键 词： | 迎角测量 视频测量 风洞试验 |
Videogrammetric measurement of attack angle and its precision investigation in wind tunnel tests |
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| Authors: | ZHANG Zheng-yu YU Bo HUANG Shi-jie WANG Shui-liang SUN Yan |
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| Institution: | 1. State Key Laboratory of Aerodynamics, Center, Mianyang Siehuan 621000, Chinas2. versity of Science and Technology, Mianyang China Aerodynami Information Engine cs Research and Development ering College, Southwest Uni- Sichuan 621000, China) |
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| Abstract: | The measurement of attack angle is a base for the precision and accuracy of test data （the attack angles at the stall and minimum resistance points, for example, are the crucial data for aircraft developing and remodeling）. Therefore, the method of videogrammetric measurement for attack angle is presented, and its accuracy is investigated. Several engineering tests of attack angle measuring in 2m supersonic wind tunnel have demonstrated that the accuracy of this ap- proach was ≤0.01°（the swings no more than 0. 01°can be perceived distinctly）, on the other hand the aerodynamic shape, rigidity and intensity of the model cannot be influenced, therefore it is useful and effective. |
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| Keywords: | attack angle measuring videogrammetry wind tunnel test |
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