Abstract
A flight test was performed on the airport of Yanliang in June, 2010 for the noise source identiofication of ARJ21. The airframe noise was recorded using a ground-based multi-arm logarithmic spiral array with diameter as 30 meters. A data set of five taking off and eight approaching flight with extended landing gears has been acquired during four days. Conventional beamforming and deconvolution approach for the mapping of acoustic sources (DAMAS) are applied for the data analysis. The beamforming results could clearly distinguish two engines and the nose landing gear. Their spectrum characterizations are also presented together with a description of the experimental set-up.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
