📡 Gravity-Gradient Satellite Libration Lab (2D)

2D gravity-gradient lab: a boom satellite on a Kepler orbit librates about the local vertical. Change boom length, tip mass, damping, eccentricity and disturbance torque, with phase portrait, potential well and six numerical checks including the elliptic-integral period.

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install