{"title":"Sound Insulation of Fuselage Aircraft Structures with Different Compositions of Resonance Elements","authors":"A. Ya. Zverev, L. A. Lazarev, I. V. Pankratov","doi":"10.1134/S1063771024603091","DOIUrl":null,"url":null,"abstract":"<p>Reducing noise in the cabin of propeller aircraft is an urgent problem of internal acoustics, since traditional sound-insulating structures are insufficiently effective in the low-frequency region. One promising method for solving it is to use resonance systems, with which it is possible to significantly increase the sound insulation of the fuselage structure of aircraft in this frequency range. The study determined the effect of resonance systems on the sound-insulating ability of flat and cylindrical panels without and with cross stiffening simulating the body bulkhead frame was experimentally determined, as well as the effectiveness of facing the passenger compartment with resonance systems with different compositions. Tests were carried out in sound chambers and on a full-scale bench, which is a real passenger plane. The tested structures were faced with elastoacoustic compensators of various types with resonance elements made of foil, micalent paper, and thermopolyurethane. It is shown that the efficiency of resonance systems can reach 10–20 dB or more.</p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 2","pages":"277 - 281"},"PeriodicalIF":1.2000,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acoustical Physics","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1134/S1063771024603091","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ACOUSTICS","Score":null,"Total":0}
引用次数: 0
Abstract
Reducing noise in the cabin of propeller aircraft is an urgent problem of internal acoustics, since traditional sound-insulating structures are insufficiently effective in the low-frequency region. One promising method for solving it is to use resonance systems, with which it is possible to significantly increase the sound insulation of the fuselage structure of aircraft in this frequency range. The study determined the effect of resonance systems on the sound-insulating ability of flat and cylindrical panels without and with cross stiffening simulating the body bulkhead frame was experimentally determined, as well as the effectiveness of facing the passenger compartment with resonance systems with different compositions. Tests were carried out in sound chambers and on a full-scale bench, which is a real passenger plane. The tested structures were faced with elastoacoustic compensators of various types with resonance elements made of foil, micalent paper, and thermopolyurethane. It is shown that the efficiency of resonance systems can reach 10–20 dB or more.
期刊介绍：
Acoustical Physics is an international peer reviewed journal published with the participation of the Russian Academy of Sciences. It covers theoretical and experimental aspects of basic and applied acoustics: classical problems of linear acoustics and wave theory; nonlinear acoustics; physical acoustics; ocean acoustics and hydroacoustics; atmospheric and aeroacoustics; acoustics of structurally inhomogeneous solids; geological acoustics; acoustical ecology, noise and vibration; chamber acoustics, musical acoustics; acoustic signals processing, computer simulations; acoustics of living systems, biomedical acoustics; physical principles of engineering acoustics. The journal publishes critical reviews, original articles, short communications, and letters to the editor. It covers theoretical and experimental aspects of basic and applied acoustics. The journal welcomes manuscripts from all countries in the English or Russian language.
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