Aeroacoustic Study on a Simplified Nose Landing Gear

• Published in: Applied Mechanics and Materials Vol. 184-185; no. Frontiers of Mechanical Engineering and Materials Engineering; pp. 18 - 23
• Main Authors: Xu, Xin, Nie, Hong, Long, Shuang Li
• Format: Journal Article
• Language: English
• Published: Zurich Trans Tech Publications Ltd 01.06.2012
• Subjects: Acoustic noise; Acoustics; Aeroacoustics; Computer simulation; Landing gear; Mathematical models; Noise; Nose; Computational Aeroacoustics; Acoustic Analogy; Acoustic Measurement; Landing Gear Noise
• ISBN: 9783037854419; 3037854413
• ISSN: 1660-9336; 1662-7482; 1662-7482
• DOI: 10.4028/www.scientific.net/AMM.184-185.18

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.