Videogrammetry of the Model’s Attitude in Wind Tunnel Testing

Abstract:

The advanced precision of drag coefficient is 0.0001 for the high speed wind tunnel test of measuring forces, the model’s angle of attack precision is ≤0.01°following errors distribution. A videogrammetric method of model’s 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 measuring standard deviation of videogrammetric measurement system established by this paper is ≤0.0094°, in addition it neither destroys the model’s shape, nor changes the stiffness or strength, so it is useful and effective.

• Periodical: Applied Mechanics and Materials (Volumes 190-191)
• Pages: 1273-1277
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.190-191.1273
• Online since: July 2012
• Authors: Zheng Yu Zhang, Zhong Xiang Sun, Xu Hui Huang, Yan Sun
• Keywords: Angle of Attack, Attitude, Uncertainty, Videogrammetry, Wind Tunnel Test

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