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Low-Cost Phased Microphone Array Design for Moderate-Scale Aeroacoustics TestsA new wall-mounted phased microphone array was designed, built, and calibrated for testing in closed or open test section wind tunnels. Two configurations were evaluated - one with microphone plate flush with the tunnel surface and the other with microphone plate recessed behind a porous screen. The arrays were successfully operated to Mach number of 0.4 and were calibrated using an in-flow speaker source during a recent study at the AEDC NFAC 40- by 80-Ft Wind Tunnel at NASA Ames.
Document ID
20190001365
Acquisition Source
Ames Research Center
Document Type
Presentation
Authors
Horne, Clifton (NASA Ames Research Center Moffett Field, CA, United States)
Burnside, Nathan (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
March 8, 2019
Publication Date
February 19, 2014
Subject Category
Research And Support Facilities (Air)
Instrumentation And Photography
Acoustics
Report/Patent Number
ARC-E-DAA-TN13364
Report Number: ARC-E-DAA-TN13364
Meeting Information
Meeting: 2014 Seedling Seminar
Location: Moffett Field, CA
Country: United States
Start Date: February 25, 2014
End Date: February 27, 2014
Sponsors: NASA Headquarters
Funding Number(s)
WBS: WBS 694478.02.93.02.13.41.21
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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