5 papers
Elliptical Lunar Frozen Orbit Constellations: Torus-Based Design and Analysis
Beom Park, Kathleen C. Howell, Daniel Brack
Elliptical Lunar Frozen Orbits (ELFOs) are attractive candidates for lunar satellite constellations supporting lunar south pole exploration. Building on prior frequency-based orbit…
Families of Two-Impulse Optimal Rendezvous Transfers Between Elliptic Orbits
Beom Park, Kathleen C. Howell, Jaewoo Kim +1
The classical fuel-optimal two-impulse rendezvous problem between Keplerian orbits is revisited from a family-based perspective. Conventional approaches often yield isolated optima…
Linking Averaged and Unaveraged Three-Body Dynamics Near Smaller Primaries: Symmetric Periodic Orbits
Beom Park, Kathleen C. Howell
Within a three-body system comprised of two celestial bodies and a spacecraft, the dynamical environment near a smaller primary is significantly perturbed, motivating a balance bet…
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…
A Frequency-Domain Differential Corrector for Quasi-Periodic Trajectory Design and Analysis
Beom Park, Kathleen C. Howell, Shaun Stewart
This paper introduces the Frequency-Domain Differential Corrector (FDDC), a model-agnostic approach for constructing quasi-periodic orbits (QPOs) across a range of dynamical regime…