Have there been advancements in materials or safety procedures since the Hindenburg that would allow us to safely use hydrogen as a lifting gas? It seems a waste to use helium for anything other than cooling big magnets.
It’s actually the reason it can fly: this craft is what is known as a hybrid airship, it’s lifting gas doesn’t quite give it enough lift to fly, unlike a regular airship, and it gets the rest from aerodynamic lift like a plane. This requires it to be vaguely wing-shaped, which is why it has this design like two blimps stuck together.
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