Reduction of background noise induced by wind tunnel jet exit vanes
The NASA-Langley 4 x 7 m wind tunnel develops low frequency flow pulsations at certain velocity ranges during open throat mode operation, affecting the aerodynamics of the flow and degrading the resulting model test data. Triangular vanes attached to the trailing edge of flat steel rails, mounted 10...
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| Veröffentlicht in: | AIAA journal 1985-10, Vol.23 (10), p.1631-1632 |
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| container_title | AIAA journal |
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| creator | Martin, Ruth M Brooks, Thomas F Hoad, Danny R |
| description | The NASA-Langley 4 x 7 m wind tunnel develops low frequency flow pulsations at certain velocity ranges during open throat mode operation, affecting the aerodynamics of the flow and degrading the resulting model test data. Triangular vanes attached to the trailing edge of flat steel rails, mounted 10 cm from the inside of the jet exit walls, have been used to reduce this effect; attention is presently given to methods used to reduce the inherent noise generation of the vanes while retaining their pulsation reduction features. |
| doi_str_mv | 10.2514/3.9136 |
| format | Article |
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| fulltext | fulltext |
| identifier | ISSN: 0001-1452 |
| ispartof | AIAA journal, 1985-10, Vol.23 (10), p.1631-1632 |
| issn | 0001-1452 1533-385X |
| language | eng |
| recordid | cdi_proquest_miscellaneous_24750893 |
| source | NASA Technical Reports Server; Alma/SFX Local Collection |
| subjects | Acoustics Exact sciences and technology Fluid dynamics Fundamental areas of phenomenology (including applications) Instrumentation for fluid dynamics Physics |
| title | Reduction of background noise induced by wind tunnel jet exit vanes |
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