Calculation of the number of apertures in perforated sound-absorbing structures of an aircraft engine

A method for calculating the number of apertures in an aircraft engine’s perforated soundabsorbing structures that present themselves as shells of a rotating body with rectangular and circular guide is presented. Formulas for determining aperture pitch are given. Analytical expressions for calculati...

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Bibliographic Details
Published inJournal of machinery manufacture and reliability Vol. 44; no. 7; pp. 642 - 645
Main Author Dudarev, A. S.
Format Journal Article
LanguageEnglish
Published New York Allerton Press 01.12.2015
Subjects
Engineering
Machines
Manufacturing
Processes
Helmholtz resonator
aperture
perforation
shell
sound-absorbing structure
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Summary:A method for calculating the number of apertures in an aircraft engine’s perforated soundabsorbing structures that present themselves as shells of a rotating body with rectangular and circular guide is presented. Formulas for determining aperture pitch are given. Analytical expressions for calculating the number of apertures in perforated areas with regular triangle and square lattices are presented.
ISSN:1052-6188
1934-9394
DOI:10.3103/S1052618815070158