摘要
本文首先简述了研究风洞实验数据误差的意义,然后给出系统误差、随机误差、粗差及不确定度的定义,在讲述了单点测量标准差、多点测量标准差及随机不确定度计算方法之后,介绍了系统误差的判别和风洞实验数据误差的合成,最后给出了风洞气流参数、压力系数及力系数随机误差的计算公式。
The significance of studing the error of wind tunnel testing data is reviewed briefly.Definitions of systematic error,randomerror,parasitic error and uncertainty are presented.After explaining thestandard deviations of single-point and multi-point measurements,and thecalcuation methods of random uncertainty,a method to distinguish thesystematic error and the composite method for wind Tunnel testing errorare introduced.Finally,the formula for calculating random error of windfunnel flow param-eters,aerodynamic pressure and force coefficients aregiven.
关键词
风洞实验
数据处理
数据误差
wind tunnel testing
data processing
data error
