The Journal of the Acoustical Society of Korea (한국음향학회지)

The Acoustical Society of Korea (한국음향학회)
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A study on configuration of acoustic package for towed array sonar using design of experiments

실험계획법을 이용한 예인 음탐기용 음향패키지 형상 연구

  • 이정현 (국방과학연구소 제6기술연구본부) ;
  • 신증호 (국방과학연구소 제6기술연구본부) ;
  • 권오조 (국방과학연구소 제6기술연구본부) ;
  • 김군칠 (국방과학연구소 제6기술연구본부)
  • Received : 2018.11.10
  • Accepted : 2019.03.26
  • Published : 2019.03.31
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Abstract

In this paper, the characteristics of receiving voltage sensitivity about acoustic package in towed array sonar is analyzed through the numerical simulation and design of experiments. Simulation results show that the variation of receiving voltage sensitivity is caused by the structural resonance mode shape on baseline acoustic package. The effect of design parameters of the acoustic package are analyzed through the design of experiments to reduce the deviation of receiving voltage sensitivity. A change of hydrophone shield can thickness (t) is the greatest effect on the deviation of receiving voltage sensitivity. As a result of water tank test, the acoustic package derived from the design of experiments has reduced deviation of receiving voltage sensitivity.

본 연구에서는 예인 음탐기용 음향패키지에 대한 수신전압감도 특성을 분석하기 위해 수치해석과 실험계획법을 적용하였다. 수치해석 결과는 초기 설계된 음향패키지의 구조 공진 모드 특성으로 인한 수신전압감도 변화를 보여준다. 수신전압감도 편차를 줄이기 위해 도출된 음향패키지 설계 변수의 영향은 실험계획법을 통해 분석하였다. 수신전압감도 편차는 수중청음기 쉴드캔 두께(t)의 변화에 가장 민감한 것을 확인하였다. 수조시험 결과 실험계획법에 의해 도출된 음향패키지는 수신전압감도 편차가 감소됨을 확인하였다.

Keywords

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Fig. 1. Configuration of acoustic package.

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Fig. 2. Numerical simulation model domain.

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Fig. 3. Simulation result of acoustic package.

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Fig. 4. Mode shape of acoustic package (at arrow point in Fig. 3.).

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Fig. 5. Main effects plot of dependent variables.

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Fig. 6. Pareto chart.

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Fig. 7. Water tank test configuration and conditions.

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Fig. 8. Water tank test results.

Table 1. Factors and levels.

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Table 2. Test condition and simulation results.

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References

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