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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.
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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
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joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use.
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
