3 papers
cs.RO2026
Passively Safe Convex Guidance for Cislunar Rendezvous and Proximity Operations
Ian M. Down, Connor Plaks, Matthew Bolliger +1
This paper presents purely convex programs for passively safe impulsive rendezvous and proximity operations in cislunar orbits. Approach, arrival, and abort maneuvers are all desig…
nlin.CD2025
On-Manifold Low-Thrust Rephasing of Quasi-Periodic Orbits
Ian M. Down, Manoranjan Majji, Kathleen C. Howell
A bi-level optimal control framework is introduced to solve the low-thrust re-phasing problem on quasi-periodic invariant tori in multi-body environments where deviations away from…
math.OC2025
Direct Pseudospectral Optimal Control by Orthogonal Polynomial Integral Collocation
Thomas L. Ahrens, Ian M. Down, Manoranjan Majji
This paper details a methodology to transcribe an optimal control problem into a nonlinear program for generation of the trajectories that optimize a given functional by approximat…