NDLI: Noise measurement in wind tunnels, workshop summary

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Noise measurement in wind tunnels, workshop summary

Content Provider	NASA Technical Reports Server (NTRS)
Author	Williams, J. Hickley, D. H.
Copyright Year	1982
Description	In reviewing the progress made in acoustic measurements in wind tunnels over the 5-yr span of the workshops, it is evident that a great deal of progress has occurred. Specialized facilities are now on line, special measurement techniques were developed, and corrections were devised and proven. This capability is in the process of creating a new and more correct data bank on acoustic phenomena, and represents a major step forward in acoustics technology. Additional work is still required, but now, rather than concentrating on facilities and techniques, researchers may more profitably concentrate on noise-source modeling, with the simulation of propulsor noise source (in flight) and of propulsor/airframe airflow characteristics. Promising developments in directional acoustic receivers and other discrimination/correlation techniques should now be regularly exploited, in part for model noise-source diagnosis, but also to expedite extraction of the lone source signal from any residual background noise and reverberation in the working chamber and from parasitic noise due to essential rigs or instrumentation inside the airstream.
File Size	1292579
Page Count	44
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19820026312
Archival Resource Key	ark:/13960/t2x39mf6b
Language	English
Publisher Date	1982-09-01
Access Restriction	Open
Subject Keyword	Acoustics Shear Layers Wind Tunnels Engine Noise Aircraft Noise Helicopters Engine Airframe Integration Wing Nacelle Configurations Noise Measurement Aeroacoustics Graphs Charts Data Bases Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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