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Q&A Vacuum instead of light gas?

I know that with a vacuum, you'll be able to gain a whole lot more lift than with any gas. I'm just wondering how you'd do it. What would be needed to make a vacuum balloon as opposed to a hot-air ...

4 answers  ·  posted 9y ago by Jetscooters‭  ·  last activity 8y ago by Jetscooters‭

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