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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2023, Vol. 44 ›› Issue (2): 626269-626269.doi: 10.7527/S1000-6893.2021.26269

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Data analysis of sonic boom test based on probability model

Shanjie XU1,2,3,4, Hongqiang LYU5, Zhongchen LIU6, Yan LENG6, Xuejun LIU1,4()   

  1. 1.MIIT Key Laboratory of Pattern Analysis and Machine Intelligence,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China
    2.State Key Laboratory of Aerodynamics,China Aerodynamics Research and Development Center,Mianyang  621000,China
    3.Key Laboratory of Aerodynamic Noise Control,China Aerodynamics Research and Development Center,Mianyang  621000,China
    4.Collaborative Innovation Center of Novel Software Technology and Industrialization,Nanjing University,Nanjing  210023,China
    5.College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
    6.Aviation Key Laboratory of Science and Technology on High Speed and High Reynolds Number Aerodynamic Force Research,AVIC Aerodynamics Research Institute,Shenyang 110034,China
  • Received:2021-08-23 Revised:2021-09-17 Accepted:2021-11-29 Online:2023-01-25 Published:2021-12-09
  • Contact: Xuejun LIU E-mail:xuejun.liu@nuaa.edu.cn
  • Supported by:
    Aeronautical Science Foundation of China(2018ZA52002);Foundation of State Key Laboratory of Aerodynamics(SKLA20180102);Foundation of Key Laboratory of Aerodynamic Noise Control(ANCL20190103)

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: