Acoustic Array Measurements in Aerodynamic Wind Tunnels : A Subspace Approach for Noise Suppression

2007 ◽  
Author(s):  
Jean Bulté
Keyword(s):  
Noise Suppression ◽  
Wind Tunnels ◽  
Array Measurements ◽  
Acoustic Array

Phased Acoustic Array Measurements of a 5.75% Hybrid Wing body Aircraft (Invited)

2016 ◽  
Author(s):  
Nathan J. Burnside ◽  
William C. Horne ◽  
Kevin R. Elmer ◽  
Rui Cheng ◽  
Leon Brusniak
Keyword(s):  
Array Measurements ◽  
Acoustic Array

Phased acoustic array measurements of a 5.75% hybrid wing body aircraft

2017 ◽  
Vol 16 (4-5) ◽  
pp. 326-357
Author(s):  
Nathan J Burnside ◽  
William C Horne ◽  
Kevin R Elmer ◽  
Rui Cheng ◽  
Leon Brusniak
Keyword(s):  
Wind Tunnel ◽  
Microphone Array ◽  
Leading Edge ◽  
Noise Model ◽  
Acoustic Measurements ◽  
Frequency Range ◽  
High Lift ◽  
Array Measurements ◽  
Individual Support ◽  
Acoustic Array

Detailed acoustic measurements of the noise from the leading-edge Krueger flap of a 5.75% hybrid wing body aircraft model were acquired with a traversing phased microphone array in the Arnold Engineering Development Complex NFAC 40- by 80-foot wind tunnel. The spatial resolution of the array was sufficient to distinguish between individual support brackets over the full-scale frequency range of 100 to 2875 Hz. For conditions representative of landing and take-off configuration, the noise from the brackets dominated other sources near the leading edge. Inclusion of flight-like brackets for select conditions highlights the importance of including the correct number of leading-edge high-lift device brackets with sufficient scale and fidelity. These measurements support the development of a Krueger noise model which includes cove and bracket noise.

Systematic Comparison of Microphone Array Measurements in Open and Closed Wind Tunnels

2010 ◽  
Author(s):  
Stefan Kroeber ◽  
Klaus Ehrenfried ◽  
Lars Koop ◽  
Andreas Lauterbach ◽  
Arne Henning
Keyword(s):  
Microphone Array ◽  
Wind Tunnels ◽  
Systematic Comparison ◽  
Array Measurements

scholarly journals A recursive approach for aeroacoustic phased array measurements in wind tunnels

2021 ◽  
Vol 150 (1) ◽  
pp. 417-427
Author(s):  
Jianchao Ji ◽  
Cong Wang ◽  
Liang Wang ◽  
Song Fu
Keyword(s):  
Phased Array ◽  
Wind Tunnels ◽  
Array Measurements

Endogenous Noise Suppression During Covert Orienting

2000 ◽  
Author(s):  
Edward Awh ◽  
John Serences ◽  
Kelsey Libner ◽  
Michi Matsukura
Keyword(s):  
Noise Suppression ◽  
Covert Orienting
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