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Summary

Description
English: This aerodynamic noise facility, also called an anechoic chamber, was used to study the noise generating mechanisms in supersonic and subsonic jets in the early 1970s. It was in building 57 (which no longer exists) located next door to the wind tunnel that was in building 79 at the time. The large round opening in the wall is an exhaust silencer inlet. Standing next to it is Paul Massier, co-author of a technical report about this chamber. On the right is a support structure for microphones. Fiberglass wedge blocks cover the ceiling and walls, which were mostly reinforced concrete. Spaces were left open to allow for observation windows and instruments to record test data. There were also openings in the walls that allowed air to flow into the chamber to replace the air forced out during tests.

Aug. 30, 1971 Requested by: P. Massier

Photo by: J. Rayle
Date
Source https://pub-lib.jpl.nasa.gov/docushare/dsweb/View/Collection-115
Author NASA

Licensing

Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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JPL aerodynamic noise facility

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30 August 1971

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