【摘要】 基于符号计算进行风洞试验测量不确定度分析可以实现实验数据处理公式及误差灵敏度系数的自动推导 ,采用该方法对ZSDD 1导弹标模风洞试验结果进行了定量的试验不确定度评估 ,计算得到的气动力系数精度极限与重复性试验得出的试验精度吻合良好 ,气动力系数偏离极限计算值通常是其精度极限的 3～ 4倍 ,其不确定度大约是其精度极限的 4倍。笔者所述分析方法和分析程序为定量评估风洞试验数据的可靠性提供了一种有效手段。更多还原

【Abstract】 In this paper, uncertainty assessments for wind tunnel test data are conducted based on a symbol math algorithm, by means of which the derivation of data reduction equations and error sensitive coefficients are computerized and wind tunnel test measurement uncertainty of the ZSDD 1 calibration model is quantitatively analyzed. The prediction results indicate that data precision limits agree well with the test precision obtained from repeat test, and the bias limits and uncertainties of aerodynamic coefficients are respectively 3 to 4 and 4 times as large as the precision limits. The prediction method and analysis program presented here provide an effective way to quantitatively assess the reliability of wind tunnel test results.更多还原