Design of Acoustic Tubes Array and Application to Measuring Acoustic Loads in Supersonic Airflow

• Autorzy: Wei L. , Li M. , Fu Q. , Fan Y. , Yang D.

Identyfikatory

DOI

10.2478/aoa-2014-0043

• Języki publikacji: EN

Abstrakty

EN

In the acoustic fatigue experiment for hypersonic vehicle in simulated harsh service environment on ground, acoustic loads on the surface of test pieces of the vehicle need to be measured. However, for the normal microphones without high temperature resistance ability, the near field sound measurement cannot be achieved. In this work, on the basis of previous researches, an acoustic tubes array is designed to achieve the near field measurement of acoustic loads on the surface of the test piece in the supersonic airflow with high temperature achieved by coherent jet oxygen lance. Firstly, the process of designing this acoustic tubes array is introduced. Secondly, the equality of phase differences at the front and at the end of the tubes is stated and proved using a phase differences test with an acoustic tubes array whose design is presented in this text; therefore, the phase differences of signals acquired by microphones can be directly applied to beamforming algorithm to determine the acoustic load source. Finally, using above mentioned acoustic tubes array, measurement of acoustic load, with and without a test piece in the supersonic airflow made by the coherent jet oxygen lance, is conducted respectively, and the measurements results are analyzed.

Słowa kluczowe

EN

acoustic load; acoustic tubes array; near field measurement; supersonic airflow

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2014
• Tom: Vol. 39, No. 3
• Strony: 395--402
• Opis fizyczny: Bibliogr. 20 poz., fot., rys., tab., wykr.

Twórcy

autor

Wei L.

• School of Mechanical Engineering, University of Science and Technology Beijing 30 Xueyuan Road, Haidian District, Beijing 100083, P.R. China
• Research Center for Aerospace Vehicles Technology, University of Science and Technology Beijing 30 Xueyuan Road, Haidian District, Beijing 100083, P.R. China

autor

Li M.

• School of Mechanical Engineering, University of Science and Technology Beijing 30 Xueyuan Road, Haidian District, Beijing 100083, P.R. China
• Research Center for Aerospace Vehicles Technology, University of Science and Technology Beijing 30 Xueyuan Road, Haidian District, Beijing 100083, P.R. China

autor

Fu Q.

• School of Mechanical Engineering, University of Science and Technology Beijing 30 Xueyuan Road, Haidian District, Beijing 100083, P.R. China
• Research Center for Aerospace Vehicles Technology, University of Science and Technology Beijing 30 Xueyuan Road, Haidian District, Beijing 100083, P.R. China

autor

Fan Y.

• School of Mechanical Engineering, University of Science and Technology Beijing 30 Xueyuan Road, Haidian District, Beijing 100083, P.R. China
• Research Center for Aerospace Vehicles Technology, University of Science and Technology Beijing 30 Xueyuan Road, Haidian District, Beijing 100083, P.R. China

autor

Yang D.

• School of Mechanical Engineering, University of Science and Technology Beijing 30 Xueyuan Road, Haidian District, Beijing 100083, P.R. China
• Research Center for Aerospace Vehicles Technology, University of Science and Technology Beijing 30 Xueyuan Road, Haidian District, Beijing 100083, P.R. China

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