| Issue |
MATEC Web Conf.
Volume 63, 2016
2016 International Conference on Mechatronics, Manufacturing and Materials Engineering (MMME 2016)
|
|
|---|---|---|
| Article Number | 01023 | |
| Number of page(s) | 5 | |
| Section | Mechatronic and Application Engineering | |
| DOI | https://doi.org/10.1051/matecconf/20166301023 | |
| Published online | 12 July 2016 | |
Reseach on the reduction of rocket motor jet noise by water injection
School of Aircraft Engineering, Nanchang Hangkong University, 330063, China
a Hao ZOU: erebus1991@gmail.com
Injecting water in the mixing layer of rocket motor jets is a means to reduce jet noise. The calculation of the sound pressure signals at the prescribed receivers was performed by FW-H acoustics model under the condition of water injection and without water injection. The calculation results show that the jet noise is with obvious directivity. The total sound pressure levels are obviously much higher in 10° to 30° direction than that in other direction. The sound pressure levels at the condition of water injected are lower than that of without water injection at the all receiver points, which indicates that water injection can reduce jet noise effectively.
© Owned by the authors, published by EDP Sciences, 2016
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