> including up to 5 gallons of fuel That's enough to reach critical mass of many fissile elements. I wonder if it would be possible to build a miniature nuclea

> including up to 5 gallons of fuel That's enough to reach critical mass of many fissile elements. I wonder if it would be possible to build a miniature nuclear rocket with enough thrust to lift a human. The weight budget probably isn't enough to include enough shielding.