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Acoustic measurements of a large cavity in a wind tunnel
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Scheiman, J. |
| Copyright Year | 1978 |
| Description | Acoustic measurements were made with inside and far-field microphones. Correlation of measured frequencies with available theories indicates that existing theories are applicable over a broader range than previously shown. The cavity configuration with a partial covering downstream amplified tonal intensities. The frequency of the tones depended on cavity size, not on cavity open area. Introducing upstream disturbances decreased the amplitude of the cavity tones. |
| File Size | 4165765 |
| Page Count | 37 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19780017887 |
| Archival Resource Key | ark:/13960/t0vq7r289 |
| Language | English |
| Publisher Date | 1978-05-01 |
| Access Restriction | Open |
| Subject Keyword | Acoustics Cavities Turbulent Flow Acoustic Measurement Wind Tunnels Airframes Noise Intensity Dimensions Frequency Ranges Ntrs Nasa Technical Reports ServerĀ (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |