well to be honest.....i don't know all the tech details of the ship.....but sense they gave a specific length.....i would assume it does NOT get bigger.....or length would be variable....iow its NOT a ballon.....more like a blimp....fix sized.....max amount of pressure....and they gave the weight....220 lbs....thus u need to know whats the H pressure of the ship.....notice the term pressurized hull.....i do not believe Tedlar and Mylar expand like rubber.
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