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Evaluation of the nasa ames no. 1 7 by 10 foot wind tunnel as an acoustic test facility
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Wilby, J. F. Scharton, T. D. |
| Copyright Year | 1975 |
| Description | Measurements were made in the no. 1 7'x10' wind tunnel at NASA Ames Research Center, with the objectives of defining the acoustic characteristics and recommending minimum cost treatments so that the tunnel can be converted into an acoustic research facility. The results indicate that the noise levels in the test section are due to (a) noise generation in the test section, associated with the presence of solid bodies such as the pitot tube, and (b) propagation of acoustic energy from the fan. A criterion for noise levels in the test section is recommended, based on low-noise microphone support systems. Noise control methods required to meet the criterion include removal of hardware items for the test section and diffuser, improved design of microphone supports, and installation of acoustic treatment in the settling chamber and diffuser. |
| File Size | 12225524 |
| Page Count | 137 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19750017896 |
| Archival Resource Key | ark:/13960/t9r25qk00 |
| Language | English |
| Publisher Date | 1975-06-30 |
| Access Restriction | Open |
| Subject Keyword | Research And Support Facilities (air) Sound Waves Acoustic Measurement Wave Propagation Wind Tunnels Calibrating Research Facilities Noise Generators Noise Threshold Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
