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| ARJ Aircraft Noise Measurement from Fly-over Test |
| CHEN Tao1,HOU Hong1,CHEN Zhi-fei1,ZHAO Jiang-nan2 |
1. Northwestern Polytechnical University, Xi’an, Shaanxi 710072, China
2. Chinese Flight Test Establishment, Xi’an, Shaanxi 710089, China |
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Abstract ARJ aircraft noise sources were obtained from fly-over measurements.In order to distinguish different noise sources, array signal processing technology was used, and multi-arms spiral array was designed. The result shows that the main noise sources are aero-engine,landing gear,flaps and the back of empennages and the main sources are different with the different frequencies. These can provide the support for noise reduction.
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2012, Vol. 33 
