Videogrammetry of the models attitude in wind tunnel testing

摘要：

　　The advanced precision of drag coefficient is 0.0001 for the high speed wind tunnel test of measuring forces, the models angle of attack precision σα is ≤0.01 °following errors distribution.A videogrammetric method of models attitude is therefore proposed, its uncertainty is investigated, and a compensation method of its systematic error is also presented by this paper.The three engineering videogrammetric experiments of attack angle in 2 meter supersonic wind tunnel testing have demonstrated that σα of videogrammetric measurement system established by this paper is ≤0.0094°, in addition it neither destroys the models shape, nor changes the stiffness or strength, so it is useful and effective.

关键词： attitude angle of attack videogrammetry wind tunnel test uncertainty

作者: ZHANG Zheng-yu Sun Zhong-xiang Huang Xu-hui Sun Yan

作者单位: State Key Laboratory of Aerodynamics,China Aerodynamics Research and Development Center (CARDC),Mianyang 621000,Peoples Republic of China

会议类型: 国际会议

会议名称: the 3nd International Conference on Digital Manufacturing & Automation (第三届数字制造与自动化国际会议(ICDMA 2012))

会议地点: 桂林

会议语种:英文

页码: 1273-1277

在线出版日期: 2012-08-01（万方平台首次上网日期，不代表论文的发表时间）