Relative equilibria of a gyrostat in newtonian interaction with two rigid bodies

Details Relative equilibria of a gyrostat in newtonian interaction with two rigid bodies Relative equilibria of a gyrostat in newtonian interaction with two rigid bodies

2006-10-09

arxiv.org/abs/math/0610287v1

Mathematics

Dynamical Systems

24 pages

Scientific paper

In this paper the non-canonical Hamiltonian dynamics of a gyrostat in the three body problem will be examined. By means of geometric-mechanics methods some relative equilibria of the dynamics of a gyrostat in Newtonian interaction with two rigid bodies will be studied. Taking advantage of the results obtained in previous papers, working on the reduced problem, the bifurcations of these relative equilibria will be studied. The instability of Eulerian relative equilibria if the gyrostat is close to a sphere is proven. Necessary and sufficient conditions will be provided for lineal stability of Lagrangian relative equilibria if the gyrostat is close to a sphere. The analysis is done in vectorial form avoiding the use of canonical variables and the tedious expressions associated with them. In this way, the classic results on equilibria of the three-body problem, many of them obtained by other authors who had used of more classic techniques, are generalized.

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