A unique application of a blowdown wind tunnel for intense noise testing of large components or of entire vehicles will be described. The above facility, which is primarily used for thermal structures testing, has a 12‐ft diam exhaust jet which generates an extensive noise field useful for test purposes. Sound pressure levels in excess of 140 db exist over distances of about 100 ft in the radial direction and 200 ft in the axial direction. Sound pressure levels up to 160 db and a wide range of noise spectra are available. An example of the use of this facility in the environmental testing of a manned space vehicle is cited and some of the main findings are presented.
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© 1961 Acoustical Society of America.
1961
Acoustical Society of America