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

P Thota, B Krauskopf, MH Lowenberg

Research output: Working paperWorking paper and Preprints

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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.
Original languageEnglish
Publication statusPublished - May 2008

Bibliographical note

Sponsorship: This research has been supported by Airbus

Keywords

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

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