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Interaction of torsion and lateral bending in aircraft nose landing gear shimmy

Research output: Working paperWorking paper and Preprints

Original languageEnglish
Publication dateMay 2008
StatePublished

Abstract

In this paper we consider the onset of shimmy oscillations of an aircraft nose landing gear. To this end we develop and study a mathematical model with torsional and lateral bending modes that are coupled through a wheel-mounted elastic tyre. The geometric effects of a positive rake angle are fully incorporated into the resulting five-dimensional ordinary differential equation model. A bifurcation analysis in terms of the forward velocity and the vertical force on the gear reveals routes to different types of shimmy oscillations. In particular, we find regions of stable quasiperiodic shimmy where both modes are fully excited.

Additional information

Sponsorship: This research has been supported by Airbus

Research areas

  • quasiperiodic motion, aircraft dynamics, shimmy oscillations, mode interaction

Documents

Documents

  • Preprint

    Preprint (usually an early version) , 518 KB, PDF-document

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