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Study on Characteristics Noise Radiation of Civil Aircraft Engine
CHEN Ling;XIA Yu;JI Liang
2012, 32 (4):
78-82.
DOI: 10.3969/j.issn.1006-1355.2012.04.018
In order to study the engine noise radiation characteristics of civil aircraft on the cruise state, a similar transformation law was used in which the engine state parameter measured on ground work was transfered to one of the flight state. Analyzing two known aircraft engines, the engine noise pressure level changes corresponding to the ground test state and the air cruise state were investigated with different speed and the radiation angle, and the noise radiation field change rule of these two kind of state was obtained.
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