Interesting on the fuel. Oxygen's boiling point is at -297F (turned into liquid) and its freezing point is at -362F (turned into solid). Lowering the temperat

Interesting on the fuel. Oxygen's boiling point is at -297F (turned into liquid) and its freezing point is at -362F (turned into solid). Lowering the temperature to -340F would be solidifying the liquid oxygen but not quite yet. I guess at that point the volume has reduced, enabling the packing of more LO into the container. Having an additional phase change doubles the risk factor along the whole pipeline that it flows through, the container, the valves, the pipes, the chambers, whatever. Liquid to gas can be dissipated quickly. How bad can uncontrolled solid to liquid expansion be? Edit: uncontrolled liquid to gas venting is equally volatile and dangerous.