scholarly journals A Comparative Study of Simulated and Measured Main Landing Gear Noise for Large Civil Transports

2017 ◽  
Author(s):  
Benedikt Konig ◽  
Ehab Fares ◽  
Mehdi R. Khorrami ◽  
Patricio A. Ravetta
Keyword(s):  
Comparative Study ◽  
Landing Gear ◽  
Gear Noise ◽  
Landing Gear Noise

A design‐oriented approach to landing gear noise prediction

2008 ◽  
Vol 123 (5) ◽  
pp. 3394-3394
Author(s):  
Philip J. Morris ◽  
Kenneth S. Brentner ◽  
Leonard V. Lopes
Keyword(s):  
Landing Gear ◽  
Noise Prediction ◽  
Gear Noise ◽  
Landing Gear Noise ◽  
Oriented Approach

A Preliminary Study of Landing Gear Noise in Low-Speed Wind Tunnel

2007 ◽  
Author(s):  
Hiroki Ura ◽  
Takeshi Ito ◽  
Toshimi Fujita ◽  
Akihito Iwasaki ◽  
Norihisa Ando ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
Landing Gear ◽  
Gear Noise ◽  
Low Speed ◽  
Landing Gear Noise ◽  
Preliminary Study ◽  
Low Speed Wind Tunnel

scholarly journals The Effect of Flow Circulation on the Scattering of Landing Gear Noise

2015 ◽  
Author(s):  
Timothy J. Heffernon ◽  
David Angland ◽  
Xin Zhang ◽  
Malcolm Smith
Keyword(s):  
Landing Gear ◽  
Gear Noise ◽  
Flow Circulation ◽  
Landing Gear Noise

Measurement of ARJ21 Aircraft Landing Gear Noise Using Array Signal Processing Technology

2012 ◽  
Vol 588-589 ◽  
pp. 747-750
Author(s):  
Tao Chen ◽  
Hong Hou ◽  
Zhi Fei Chen ◽  
Cheng Kun Jiang
Keyword(s):  
Array Signal Processing ◽  
Phased Array ◽  
Landing Gear ◽  
Gear Noise ◽  
Doppler Shifts ◽  
Aircraft Landing ◽  
Data Processing Method ◽  
Spatially Distributed ◽  
Noise Measurements ◽  
Landing Gear Noise

Flyover noise measurements were conducted on an aircraft ARJ21 aiming at landing gear noise prediction schemes. The analysis is based on acoustic dedopplerized spectra and localization maps was calculated with the pressure signals of a acoustic phased array with 30 microphones. The acoustic phased array is a spatially distributed set of microphones which simultaneously sample the acoustic field. The doppler shifts was removed using linear interpolation.By appropriately time delaying the output of individual microphones, the origin and level of noise source(the landing gear) can potentially be determined. The success of this approach depends largely on the phased array design, and the array data processing method. This paper focuses on the two areas.

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