Cryo Depot Boil-Off vs ISRU Resupply

An orbital or cislunar propellant depot is a race between physics and production: sunlight and structural conduction constantly leak heat into the cryogenic tank, boiling off a slice of the propellant every hour, while an in-situ resource utilization plant tries to manufacture new propellant from local water ice faster than the tank loses it. This simulator renders a real 3D depot — a liquid-filled tank wrapped in tunable multi-layer insulation, a deployable sun shield, and an active cryocooler — and drives its fill level with the actual heat-leak and latent-heat-of-vaporization physics behind that race. Tune insulation layers, shield deployment, cryocooler power and ISRU production rate for LOX, methane or hydrogen and watch live readouts for heat leak, boil-off rate and net fill rate decide whether the depot fills up or slowly empties over simulated mission days.