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Measurement and Analysis of Transfer Performance of Noise and Vibration for Civil Aircraft with Tail Mounting Engine Based on LMS Test. Lab
HAN Feng;WANG Chun-mei;HU Xi-zhi
2012, 32 (2):
163-167.
DOI: 10.3969/j.issn.1006-1355-2011.04.040
Internal noise control of the cabin of commercial aircrafts is an important issue in aircraft design. Analysis of transfer performance of noise and vibration of the full aircraft is the key technology. In this article, a method of measurement and analysis of transfer performance of noise and vibration for civil aircrafts based on the reciprocity principle was introduced. The LMS Test. Lab, the low-volume sound source, sound pressure and acceleration sensors were used to acquire the frequency response function, amplitude and phase transfer functions and the coherence function. The performances of noise and vibration transfer among the pylon, fuselage structure, interior trim and cabin cavity were analyzed. The feasibility of engineering application of this method for civil aircrafts was verified.
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