Publication de 6 numéros par an
ISSN Imprimer: 1948-2590
ISSN En ligne: 1948-2604
VIBROACOUSTIC PROCESSES MODELING IN THE TURBOJET ENGINE AND OTHER POWER PLANT UNITS BASED ON FREQUENCY CHARACTERISTICS INVESTIGATION OF THE “ENGINE-MOUNTING-AIRFRAME” SYSTEM
RÉSUMÉ
Vibroacoustic processes investigations in an air-gas duct and in several units of GTE and their comparison to vibration loading of the engine body show significant interplay between these two processes. This paper presents a calculation model of a multicoupled system, namely, an "engine-mounting-airframe" system. This model is developed on the basis of experimental investigations of the frequency characteristics of dynamic compliances and vibroacoustic conductivities of the engine body and of the airframe in attachment points. This model allows us to work out a set of algorithms for estimation of acoustic processes in a gas-air duct, of vibration characterictics of the power plant units (for example, plunger pumps), and of dynamic loading of the engine attachment points.
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Baklanov V. S., Role of structural noise in aircraft pressure cockpit from vibration action of new-generation engines, Acoustical Physics, 62, 4, 2016. Crossref