Based on years of research conducted at the NASA Jet Propulsion Laboratory, Low-Energy
Lunar Trajectory Design provides high-level information to mission managers and detailed …

Unstable resonant orbits in the circular restricted three-body problem have increasingly
been used for trajectory design using optimization and invariant manifold techniques. In this …

It is increasingly desirable to incorporate multibody effects in tour design early in the process
to both discover new solutions and reduce the number and size of required maneuvers …

The endgame scenario that was explored in this analysis consisted of the part of the
trajectory starting at the last Ganymede flyby and ending at the final Europa approach. The …

In recent years, stable and unstable manifolds of invariant objects (such as libration points
and periodic orbits) have been increasingly recognized as an efficient tool for designing …

In this work, the final approach typical of a trajectory traveling from the last resonance of an
endgame scenario in a tour down to a moon is examined within the context of invariant …

The success of the Genesis spacecraft, as well as the current Artemis mission, continue to
generate interest in expanding the trajectory options for future science and exploration goals …

The phenomenon of mean-motion resonance overlapping, which generates heteroclinic
connections between unstable resonant orbits, is known to be crucial for the generation of …

Tour designs using flybys have traditionally been studied using two-body patched conic
methods. Previous work has shown that trajectories designed using these techniques and …

When the planar circular restricted 3-body problem is periodically perturbed, most unstable
periodic orbits become invariant tori. However, 2D Poincaré sections no longer work to find …