A central problem in orbit transfer optimization is to determine the number, time, direction,
and magnitude of velocity impulses that minimize the total impulse. This problem was posed …

Solutions to practical optimal control problems (OCPs) may consist of control profiles that
switch between control limits or assume values interior to their admissible set, either due to …

Abstract In this paper, Particle Swarm Optimization with energy-to-fuel continuation is
proposed for initializing the co-state variables for low-thrust minimum-fuel trajectory …

LOW-THRUST propulsion systems have gained traction in recent years as they are capable
of significantly reducing the propellant consumption of a mission by providing a higher …

SPACECRAFT rendezvous is a crucial aspect of space exploration and satellite servicing. It
involves the precise positioning and maneuvering of one spacecraft in close proximity to …

NASA's Artemis program aims to establish a sustainable and long-term human presence on,
and in orbit around, the Moon. Transportation of humans and supplies to and from the Lunar …

View Video Presentation: https://doi. org/10.2514/6.2021-1343. vid Minimum-time planet-
centric transfer maneuvers are investigated for spacecraft equipped with solar-powered, low …

Feedback control for close-range orbital rendezvous, which permits choosing the direction of
the final approach, is beneficial for numerous space missions. However, develo** such a …

The presence of extremely low-altitude, lunar quasi-frozen orbits (QFOs) has given rise to
interesting mission opportunities. These QFOs are ideal for close-range, high-resolution …

We present a new methodology to incorporate shadow-and time-triggered constraints within
the indirect optimization methods to solve low-thrust fuel-optimal orbit transfer problems …