Station-Keeping Strategies For Translunar Libration Point Orbits (2007)
Gerard Gomez, Kathie Howell, K. Howell, Carles Simo, Josep Masdemont
INTRODUCTION As part of the trajectory design, some current missions and a number of recent proposals have included halo or Lissajous orbits in the vicinity of the L 1 or L 2 libration points, most...
Random versus deterministic exponents in a rich family of diffeomorphisms (2002)
Ledrappier, Francois, Shub, Michael, Simo, Carles, Wilkinson, Amie
We study, both numerically and theoretically, the relationship between the random Lyapunov exponent of a family of area preserving diffeomorphisms of the 2-sphere and the mean of the Lyapunov...
Quasihalo Orbits Associated With Libration Points (1998)
Gerard Gomez, G. G Omez, Carles Simo, Josep Masdemont, C. Sim
Quasihalo orbits are Lissajous trajectories librating about the well known halo orbits. The main feature of these orbits is that they keep an exclusion zone in the same way that halo orbits do. As a...
Study Of The Transfer Between Halo Orbits (1998)
Gerard Gomez, G. G Omez, Angel Jorba, Carles Simo, Josep Masdemont, C. Sim
Two methods of transfer between halo orbits of the same family are developed making use of the geometry of the phase space around these solutions and the Floquet theory for periodic orbits. The study...
Averaging under Fast Quasiperiodic Forcing (1994)
We consider a non autonomous system of ordinary differential equations. Assume that the time dependence is quasiperiodic with large basic frequencies, !=" and that the ! vector satisfies a...