| 大迎角试验数据精度及影响因素分析 |
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| 引用本文： | 王元靖,范召林,吕全洲,贺中,吴军强.大迎角试验数据精度及影响因素分析[J].实验流体力学,2006,20(2):12-17. |
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| 作者姓名： | 王元靖 范召林 吕全洲 贺中 吴军强 |
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| 作者单位： | 中国空气动力研究与发展中心,四川,绵阳,621000 |
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| 摘 要： | 着重分析了粗糙带、偏航角β、模型抖动以及滤波频率、采样时间和样本长度等因素对于大迎角试验数据精度的影响。结果认为:常规试验采用的滤波频率会导致关键气动信息的丢失,滤波频率的选取尤为重要;弯刀系统的横向刚度是影响大迎角数据精度的一个重要因素,试验中如何降低其横向刚度的影响是一难点。
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| 关 键 词： | 大迎角流动 数据精度 不确定度 风洞实验 |
| 文章编号： | 1672-9897（2006）02-0012-06 |
| 收稿时间： | 2005-04-29 |
| 修稿时间： | 2006-02-20 |
Analysis on data precision and influential factors of experiments at high incidence |
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| WANG Yuan-jing,FAN Zhao-lin,L Quan-zhou,HE Zhong,WU Jun-qiang.Analysis on data precision and influential factors of experiments at high incidence[J].Experiments and Measur in Fluid Mechanics,2006,20(2):12-17. |
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| Authors: | WANG Yuan-jing FAN Zhao-lin L Quan-zhou HE Zhong WU Jun-qiang |
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| Institution: | China Aerodynamics Research and Development Center, Mianyang Sichuan 621000, China |
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| Abstract: | In this paper,the effects of some factors on data precision obtained at high incidence,such as grit strip,sideslip angle,model twittering,sampling frequency,sampling time and sample length,are analyzed.The results show that the filtering frequency in routine experiment might lead to the loss of key aerodynamic information.It is very important to choose a proper frequency in experiments at high incidence.Another important factor that can affect the data precision is the lateral hardness of the sting system and it is a difficult issue to reduce its effect. |
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| Keywords: | flow at high incidence data precision uncertainty wind tunnel test |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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