Airlock Pressure Equalization Cycle

This simulator models the pressure inside a spacecraft or space-station airlock as it cycles between habitat pressure and vacuum for crew EVA egress and ingress. Chamber pressure follows a real exponential relaxation curve set by valve conductance and the target pressure on either side, exactly the "fluid RC circuit" approximation engineers use to size airlock valves. A 3D chamber view shows hundreds of instanced air-molecule points thinning out as gas vents to space (or filling back in during repressurization), while live readouts track chamber pressure, elapsed cycle time, and — with pump-back recovery toggled on or off — how much gas is lost overboard versus captured back into the habitat's air-storage tank, the same trade every real airlock design has to make.