Simulation and Experiment on Landing Gear Component Noise

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 location between shock absorber and strut, shock absorber and bogie can induce the interaction noise which is presented by two energy peaks in the spectra. The shock absorber and the bogie is the main contributor while the strut is the least contributor to the total noise.

• Periodical: Applied Mechanics and Materials (Volumes 170-173)
• Pages: 3454-3459
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.170-173.3454
• Online since: May 2012
• Authors: Long Shuang Li, Hong Nie, Xin Xu
• Keywords: Acoustic Analogy, Acoustic Measurement, Computational Aeroacoustics, Landing Gear Noise, Vortex Sound Theory

References

[1] W. Dobrzynski. AIAA: J. Aircraft, Vol. 47(2010), p.353

[2] M. R. Fink. AIAA: J. Aircraft, Vol. 16(1979), p.659

[3] P. T. Soderman. Multi-Science: J.Aeroa., Vol. 3(2004), p.1

[4] K. Boorsma, X. Zhang, N. Molin. Springer: Acta Mech. Sin., Vol. 26(2010), p.159

[5] W. M. Dobrzynski, B. Schoning. Multi-Science: J.Aeroa., Vol. 5(2006), p.233

[6] X. Huang, X. Zhang, Y. Li. Elsevier: J Sound Vib., Vol. 329(2010), p.2477

[7] L. S. Hedges, A. K. Travin, P. R. Spalart. ASME: J. Fluids Engineering, Vol. 124(2002), p.413

[8] S. L. Long, H. Nie. Acta Aeronautica et Astronautica Sinica, Vol. 33(2012), in press. (in chinese)