基于概率模型的声爆试验数据分析

doi:10.7527/S1000-6893.2021.26269

Abstract

Abstract:

Acoustic explosion is one of the key problems to be solved in the development of supersonic civil aircraft， and the wind tunnel test is an important approach to acoustic explosion research. This paper briefly introduces the methods and difficulties in sonic boom tests， the corresponding countermeasures， and the precise measurement technology of the near-field space pressure of acoustic explosion test models in supersonic wind tunnels. The principles and shortcomings of the commonly-used correction technologies of precise measurement data， the reference run method， and the spatial averaging method are analyzed. A probabilistic model method is proposed to analyze the data of the sonic boom test. The proposed method parameterizes the disturbances caused by various uncertain factors in the complex wind tunnel environment， expressing uncertainty with probability. The probabilistic model method obtains the measurement results more efficiently， requiring no reference run data， and exhibiting validity and feasibility compared with the results of traditional methods.

Key words: sonic boom, wind tunnel test, near field, probabilistic model, spatial pressure measurement, spatial averaging method

CLC Number:

V211.7

Shanjie XU, Hongqiang LYU, Zhongchen LIU, Yan LENG, Xuejun LIU. Data analysis of sonic boom test based on probability model[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2023, 44(2): 626269.

Figures/Tables 11

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References 25

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Data analysis of sonic boom test based on probability model

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