| Author | Search for: Ramakrishnan, R.; Search for: Raimondo, S.; Search for: Grewal, A.1; Search for: Elfstrom, G. |
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| Affiliation | - National Research Council of Canada. NRC Institute for Aerospace Research
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| Format | Text, Article |
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| Conference | 38th International Congress and Exposition on Noise Control Engineering 2009, INTER-NOISE 2009, August 23-26, 2009, Ottawa, ON Canada |
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| Abstract | Acoustic reverberation chambers are used to qualify space flight hardware through exposure to intense sound pressure levels. High Intensity sound generators that are capable of emitting sound power levels in excess of 160 dB produce the levels, mainly in the low frequency range, and the achieved high frequency levels are due to non-linear spill over. In space craft testing, high levels in high frequency bands may be required. Different mechanisms such as whistles, valves and nozzles are available to produce high frequency noise in the ranges of 140-150 dB. A supersonic nozzle is one such generator of high frequency sound. The noise levels from a nozzle can be augmented by impinging the jets on flat surfaces. The impinging jet idea is an outcome of the additional jet noise generated by V/STOL vehicles during landing. A test programme was conducted to evaluate the performance of impinging jets for a range of operating parameters, the results of which are presented in this paper. |
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| Publication date | 2009-08 |
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| Publisher | Noise Control Foundation |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 23004951 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 0a4f3999-28ee-442e-a1ee-f4999275d8ed |
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| Record created | 2019-01-23 |
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| Record modified | 2020-04-16 |
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