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A Study on Optimization of Noise Reduction of Auxiliary Power Unit for Military Tracked Vehicle

군용 궤도장비 보조동력장치의 소음저감 최적화 연구

  • Lee, Ju-Seung (Land Systems Center, Defence Agency for Technology and Quality) ;
  • Kim, Byeong-Ho (Land Systems Center, Defence Agency for Technology and Quality) ;
  • Kim, Byung-Hyun (Land Systems Center, Defence Agency for Technology and Quality)
  • 이주승 (국방기술품질원 기동화력센터) ;
  • 김병호 (국방기술품질원 기동화력센터) ;
  • 김병현 (국방기술품질원 기동화력센터)
  • Received : 2018.07.05
  • Accepted : 2018.08.03
  • Published : 2018.08.31

Abstract

Noise reduction is an important issue in auxiliary power unit(APU) of tracking equipments for using military. In this study, we designed and tested reduction methods of structure borne noise and airborne source noise at the auxiliary power unit. From the bench test results, it is found that the effect of noise reduction is about 22 dB(A) if the silencer is redesigned, which is the rescue structure. However, the influence of noise reduction by air is insufficient. In addition, it is confirmed that the effect of noise reduction is excellent when structure borne noise reduction is applied to the vehicle. We expected that the test results of this study are used as basic data to reduce the noise of other tracking equipment developed later.

Keywords

Auxiliary Power Unit;Transmission Loss;Silencer;Airborne Noise;Structure Borne Noise;Tracked Vehicle

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