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- W2531519631 abstract "The paper presents the results of qualification tests in the new anechoic chamber of Perm National Research Polytechnic University (PNRPU) built in 2014-2015 and evaluation of the chamber quality in aeroacoustic experiments. It describes design features of the chamber and its sound-absorption lining. The qualification tests were carried out with tonal and broadband noise sources in the frequency range 100 Hz – 20 kHz for two different cases of the source arrangement. In every case, measurements were performed in three directions by traverse microphones. Qualification tests have determined that in the chamber there is a free acoustic field within radius of 2 m for tonal noise and 3 m for broadband noise. There was also evaluated acoustic quality of the chamber by measurements of the jet noise and vortex ring noise. The results of the experiments demonstrate that PNRPU anechoic chamber allows the aeroacoustic measurements to be performed to obtain quantitative results." @default.
- W2531519631 created "2016-10-21" @default.
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- W2531519631 date "2016-01-01" @default.
- W2531519631 modified "2023-09-27" @default.
- W2531519631 title "Tests of anechoic chamber for aeroacoustics investigations" @default.
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- W2531519631 doi "https://doi.org/10.1063/1.4964058" @default.
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