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A bifurcation study of a dynamic model of a nose landing gear mechanism subjected to external disturbances

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conference contribution
posted on 10.09.2015, 10:49 by James KnowlesJames Knowles
This paper presents a new modelling approach for the analysis of landing gear mechanisms. By replacing the mechanism's rotational joints with equivalent high-stiffness elastic joints, numerical continuation methods can be applied directly to dynamic models of landing gear mechanisms. The effects of using elastic joints are considered through two applications --| an overcentre mechanism, and a nose landing gear mechanism. In both cases, selecting a suffcient stiffness for the elastic joint is shown to provide accurate contiuation results. The advantages of this new modelling approach are then demonstrated by considering the unlocking of a nose landing gear with a single uplock/downlock mechanism, when subjected to different orientations and magnitudes of gravitational loading. The unlocking process is shown to be qualitatively insensitive to changes in both load angle and load magnitude, ratifying the robustness of a previously- proposed control methodology for unlocking a nose landing gear with a single uplock/downlock mechanism.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

AIAA Modelling and Simulation Technologies Conference

Citation

KNOWLES, J.A.C., 2015. A bifurcation study of a dynamic model of a nose landing gear mechanism subjected to external disturbances. AIAA Modelling and Simulation Technologies Conference, Dallas, TX, 22-26 June, pp.1254-1262.

Publisher

© American Institute of Aeronautics and Astronautics

Version

SMUR (Submitted Manuscript Under Review)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2015

Notes

This is a conference paper.

ISBN

9781624103551

Language

en

Location

Dallas, TX

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