July 2021 - Gereshes

Minimum Periapse for a Gravity Assist

TLDR: 100 km above the atmosphere Gravity assists are an astrodynamics maneuver to steal a small amount of a planet’s angular momentum to give your spacecraft a much more significant boost. Exactly how much momentum you can steal is defined by the arrival velocity vector relative to the planet and the maximum turning angle you…

Measuring Resilience Of Autonomous Controllers To Missed Thrust Events – ESA GNC – 2021

Note: This post is adapted from my conference paper, which was presented at the 11th International ESA Conference on Guidance, Navigation & Control Systems. You can read the full paper here. Abstract – Measuring Resilience Of Autonomous Controllers To Missed Thrust Events On A Mars To Earth Trajectory As spacecraft adopt low-thrust electric propulsion to reduce propellant mass,…

2021-07-05adminAstrodynamics, Engineering, Grad School, ResearchArtificial intelligence, Astrodynamics, Neural Network Optimal Control