MATEC Web Conf.
Volume 151, 20182017 Asia Conference on Mechanical and Aerospace Engineering (ACMAE 2017)
|Number of page(s)||5|
|Section||Aircraft Structure Design and Control|
|Published online||21 February 2018|
Fluid Similarity Criterions in Aircraft Landing Gear
School of Mechnical Engineering, Tongji University, NO:4800 Caoan Highway, Shanghai, China.
2 The Institute of Fishery Machinery and Equipment, NO:63 Chifeng Road, Shanghai, China.
Facing the design difficulty and risk of aircraft landing gear, the fluid similarity theory and model experiments are used to predict large prototype’s property, which provide guidance for hydraulic designation and selection to reduce risk. Firstly, the matrix method is used to establish the fluid similarity relationship between the prototype and the model’s luffing mechanism, and the above conclusions are used to design the prototype’s hydraulic system. Secondly, the luffing mechanism’s dynamical model with accumulator was established, the initial motion condition was set, and the pressure’s similarity ratio is obtained by simulation method. Finally, the dynamic model and similarity ratio about time, velocity and pressure are verified by the prototype and model’s experimental data.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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