Notes from Independent Study Meeting Feb 10, 2022 Present: Richmond, Dayal - Dayal shows the results of adding a photon force to the simulation, for three sails - realistic sail falls into Sun, but more slowly than a photon-force-less sail - "thin foil" takes much longer to fall into Sun - unrealistically low density sail accelerates away from Sun, reaching 10 AU in about 2 years - goals for next meeting (Mon, Feb 14): - compare trip of unrealistic sail to Saturn to the trip of real NASA probes to Saturn. How does the duration of journey compare? How to masses of vehicles compare? - adopt "thin foil" sail, area 1m x 1m, mass 0.005 kg, for the following simulations - start at x = 1.5 x 10^(11) m, y = 0, z = 0 - start with vx = 0, xy = 29400 m/s, vz = 0 - run for 2 years WITHOUT any photon force - run for 2 years WITH photon force compare final positions, velocities - run for 200 years WITHOUT any photon force - run for 200 years WITH photon force compare final positions, velocities