That’s why you put a vacuum in there. It’s made of nothing, so it doesn’t react, and there’s plenty of it in the universe. Besides, it’s also lighter than anything else you could throw in there.
If there is ever a tiny hole you go from a small hydrogen leak (dangerous but repairable) to a collapse of the entire airship and instantly falling to the ground
That’s why you put a vacuum in there. It’s made of nothing, so it doesn’t react, and there’s plenty of it in the universe. Besides, it’s also lighter than anything else you could throw in there.
Perfect. Now you only have to find a way to contain that vacuum that doesn’t involve thick, heavy walls and we’re good to go!
Fantastium fibers should do it.
You can also use unobtanium plates with adamantium rivets if you want to make it look cooler.
If there is ever a tiny hole you go from a small hydrogen leak (dangerous but repairable) to a collapse of the entire airship and instantly falling to the ground
No risk, no reward. You wanna fly the coolest airship or not.