This is very well put. There's also a second issue, which is chilling down the receiving tank quickly and efficiently enough that the fuel being transferred doe

This is very well put. There's also a second issue, which is chilling down the receiving tank quickly and efficiently enough that the fuel being transferred doesn't just flash bil and vent off into space. Like rocket combustion, this is very hard to model and sensitive to nozzle geometry, how fast you spray, the phase of the moon etc.