| 反旋桨扇非定常负荷噪声的研究 |
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| 引用本文： | 孙晓峰,胡宗安,周盛.反旋桨扇非定常负荷噪声的研究[J].航空动力学报,1988,3(3):227-230,283. |
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| 作者姓名： | 孙晓峰 胡宗安 周盛 |
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| 作者单位： | 北京航空航天大学
(孙晓峰，胡宗安)，北京航空航天大学(周盛) |
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| 摘 要： | 本文着重研究了反旋桨扇前排转子尾流与后排转子干涉形成的非定常负荷噪声,并与试验结果作了对比。研究结果表明:在转子轴向,声压级完全由非定常负荷噪声决定;而在转子平面内,对声压级的主要贡献是稳定负荷噪声,此时非定常负荷噪声的影响只限于转子通过频率的高次谐波段。
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| 收稿时间： | 1/1/1988 12:00:00 AM |
UNSTEADY LOADING NOISE OF COUNTER-ROTATING PROPELLER |
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| Sun Xioafeng,Hu Zongan and Zhou Sheng.UNSTEADY LOADING NOISE OF COUNTER-ROTATING PROPELLER[J].Journal of Aerospace Power,1988,3(3):227-230,283. |
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| Authors: | Sun Xioafeng Hu Zongan and Zhou Sheng |
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| Institution: | Beijing Institute of Aeronautics and Astronautics;Beijing Institute of Aeronautics and Astronautics;Beijing Institute of Aeronautics and Astronautics |
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| Abstract: | The unsteady Loading noise generated by interaction of a front rotor wake with an aft rotor in a counter-rotating(CR) propeller is analyzed and the noise radiation formulae are derived. The numerical prediction of noise of a real CR propeller are completed and compared with experimental data.It is concluded that the sound pressure level (SPL) in the axial direction of the rotor is fully determined by the component of unsteady loading noise, but in rotor plane the main contribution to SPL is the component of steady loading noise and the effect of the unsteady one is limited in the range of higher harmonics in this case. |
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