Technically hot air balloons don’t need to be airtight. Small leaks won’t explode or anything. They just reduce efficiency.
Which highlights the absurdity of building anything with balloons… today. Even with all our modern materials, it turns out to be kinda stupid. Wind does not cooperate. Dropping an entire ton of ballast is how you suddenly visit the ozone layer.
Technically hot air balloons don’t need to be airtight. Small leaks won’t explode or anything. They just reduce efficiency.
Which highlights the absurdity of building anything with balloons… today. Even with all our modern materials, it turns out to be kinda stupid. Wind does not cooperate. Dropping an entire ton of ballast is how you suddenly visit the ozone layer.