We present an algorithm to perform fuel-optimal stationkeeping for spacecraft in unstable halo orbits with additional constraints to ensure safety in the event of a control failure. We formulate a convex trajectory-optimization problem to generate impulsive spacecraft maneuvers to loosely track a halo orbit using a receding-horizon controller. Our solution also provides a safe exit strategy in the event that propulsion is lost at any point in the mission. We validate our algorithm in simulations of the three-body Earth-Moon and Saturn-Enceladus systems, demonstrating both low total delta-v and a safe contingency plan throughout the mission.
@article{arxiv.2405.20458,
title = {Contingency-Aware Station-Keeping Control of Halo Orbits},
author = {Fausto Vega and Zachary Manchester and Martin Lo and Ricardo Restrepo},
journal= {arXiv preprint arXiv:2405.20458},
year = {2024}
}