3 papers
math.OC2025
Constrained Fuel and Time Optimal 6DOF Powered Descent Guidance Using Indirect Optimization
Nicholas P. Nurre, Ehsan Taheri
Powered descent guidance (PDG) problems subject to six-degrees-of-freedom (6DOF) dynamics allow for enforcement of practical attitude constraints. However, numerical solutions to 6…
astro-ph.EP2024
End-to-End Lyapunov-Based Eclipse-Feasible Low-Thrust Transfer Trajectories to NRHO
Nicholas P. Nurre, Ehsan Taheri
Generating low-thrust transfer trajectories between Earth and the Near Rectilinear Halo Orbit (NRHO), that is selected for NASA's Gateway, can be challenging due to the low control…
math.OC2024
Expanding the Class of Quadratic Control-Lyapunov Functions for Low-Thrust Trajectory Optimization
Nicholas P. Nurre, Saeid Tafazzol, Ehsan Taheri
Control laws derived from Control-Lyapunov Functions (CLFs) offer an efficient way for generating near-optimal many-revolution low-thrust trajectories. A common approach to constru…