A portable normal incidence interferometer is developed, which allows determining the acoustic characteristics of the full-scale liners of an aircraft engine. Studies of large sound-absorbing panels used for lining the aircraft engine ducts are carried out. It is demonstrated that the panels have uniform acoustic characteristics in azimuthal direction.
Estimation of Azimuthal Uniformity of Acoustic Characteristics of the Sound-Absorbing Liner for an Aircraft Engine
Russ. Aeronaut.
Russian Aeronautics ; 63 , 1 ; 89-94
01.01.2020
6 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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