| 固体发动机发射过程噪声测试分析 |
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| 引用本文： | 刘佩进,李江,陈剑.固体发动机发射过程噪声测试分析[J].弹箭与制导学报,2006,26(4):207-209. |
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| 作者姓名： | 刘佩进 李江 陈剑 |
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| 作者单位： | 西北工业大学航天学院,西安,710072 |
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| 摘 要： | 利用声级计和高速数据采集系统，测量了发射过程中户外和室内的噪声．对测得的信号进行了幅值谱和1／3倍频程分析。结果表明，发射过程的噪声频率分布在一个较窄的频带内．户外和室内噪声的能量分布有所不同，户外中心频率为160Hz和400Hz噪声的声压级最大．室内中心频率为50Hz和150Hz噪声的声压级最大。
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| 关 键 词： | 发射过程 噪声测量 频谱分析 |
| 收稿时间： | 2006-03-17 |
| 修稿时间： | 2006年3月17日 |
Noise Analysis on the Launch Process of Solid Rocket Motor |
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| LIU Pei-jin,LI Jiang,CHEN Jian.Noise Analysis on the Launch Process of Solid Rocket Motor[J].Journal of Projectiles Rockets Missiles and Guidance,2006,26(4):207-209. |
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| Authors: | LIU Pei-jin LI Jiang CHEN Jian |
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| Abstract: | Outdoor and indoor noise has been measured during the process of launching, using sound level meter and high-speed data acquisition system. The measured signals have been analyzed in terms of amplitude spectrum and onethird octave bands spectrum. Result shows that noise frequency in the process of launching distributes in a narrow frequency band, and the energy distribution of outdoor and indoor noise has different characteristics. Sound pressure level of 160Hz and 400Hz center frequency outdoor noise is the biggest, while to the indoor noise, the sound pressure level from 50Hz and 150Hz center frequency reaches the biggest. |
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| Keywords: | process of launching noise measure spectrum analysis |
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