THE USING OF POLYURETHANE FOAMS INSIDE AIRCRAFT FUSELAGE AS ACOUSTIC INSULATION | ||||
The International Conference on Applied Mechanics and Mechanical Engineering | ||||
Article 74, Volume 13, 13th International Conference on Applied Mechanics and Mechanical Engineering., May 2008, Page 32-38 PDF (782.59 K) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/amme.2008.39384 | ||||
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Authors | ||||
JURICKA M.1; LAPCIK L. Jr.2 | ||||
1Graduate student, Department of Physics and Material Engineering, Tomas Bata University in Zlin, Czech Republic. | ||||
2Professor, Department of Physics and Material Engineering, Tomas Bata University in Zlin, Czech Republic. | ||||
Abstract | ||||
ABSTRACT The paper is focused on problematic of noise inside a fuselage of one propeller aeroplane. The aim of this paper is to analyse the noise produced by engine located in front of cabin for two passengers and also to show an application of specific polyurethane as an insulation layer. There were a sound absorption coefficient; a sound reflection coefficient and a sound pressure level are the most important of acoustic values. The measurements were made in laboratory and in aeroplane. The final interpretation depends on test results. | ||||
Keywords | ||||
Noise; frequency; sound absorption coefficient; sound reflection coefficient; Sound Pressure Level | ||||
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