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Aeroacoustic Study on a Simplified Nose Landing Gear

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Abstract:

Simulation analysis and experiment research are performed on the aeroacoustic noise of a landing gear component in this paper. Detached Eddy Simulation (DES) is used to produce the flow field of the model. The Ffowcs-Williams/Hawkings (FW-H) equation is used to calculate the acoustic field. The sound field radiated from the model is measured in the acoustic wind tunnel. A comparison shows that the simulation results agree well with the experiment results under the acoustic far field condition. The results show that the noise radiated from the model is broadband noise. The directivity of the noise source is like a type of dipole. The wheel is the largest contributor and the strut is the least contributor to the landing gear noise. The results can provide some reference for low noise landing gear design.

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Periodical:

Applied Mechanics and Materials (Volumes 184-185)

Pages:

18-23

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.184-185.18

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Cite this paper

Online since:

June 2012

Authors:

Shuang Li Long, Hong Nie, Xin Xu

Keywords:

Acoustic Analogy, Acoustic Measurement, Computational Aeroacoustics, Landing Gear Noise

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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