EXPERIMENTAL RESEARCH ON NOISE REDUCTION OF A COUNTER ROTATING VENTILATOR

Feng Yucheng; Zhao Xiuhua

Volume 10 Issue 2

Apr. 1995

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Article Navigation > Journal of Aerospace Power > 1995 > 10(2): 113-116,197

Feng Yucheng, Zhao Xiuhua. EXPERIMENTAL RESEARCH ON NOISE REDUCTION OF A COUNTER ROTATING VENTILATOR[J]. Journal of Aerospace Power, 1995, 10(2): 113-116,197.

Citation:

Feng Yucheng, Zhao Xiuhua. EXPERIMENTAL RESEARCH ON NOISE REDUCTION OF A COUNTER ROTATING VENTILATOR[J]. Journal of Aerospace Power, 1995, 10(2): 113-116,197.

Feng Yucheng, Zhao Xiuhua. EXPERIMENTAL RESEARCH ON NOISE REDUCTION OF A COUNTER ROTATING VENTILATOR[J]. Journal of Aerospace Power, 1995, 10(2): 113-116,197.

Citation:

Feng Yucheng, Zhao Xiuhua. EXPERIMENTAL RESEARCH ON NOISE REDUCTION OF A COUNTER ROTATING VENTILATOR[J]. Journal of Aerospace Power, 1995, 10(2): 113-116,197.

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EXPERIMENTAL RESEARCH ON NOISE REDUCTION OF A COUNTER ROTATING VENTILATOR

4the Dept.Beijing University of Aeronautics and Astronautics,Beijing 100083

Received Date: 1994-05-01
Rev Recd Date: 1994-08-01
Publish Date: 1995-04-28

Abstract

Abstract

A counter rotating ventilator with high efficiency has been made,but its noise level is too high.This paper analyzes the noise generation and noise frequency characteristics.A lot of noise experimental researches on noise suppression have been carried out successfully by the aid of acoustic liner or appropriate increase of the duct length.As a result,overall sound pressure level is reduced from 101dB(A) to 88dB(A).
- Axial ventilator,
- Frequency characteristic,
- Noise control