• Theo@lemmy.world
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    3 days ago

    For a water powered jetpack to lift a person it is estimated to need at least 100 gallons per minute, so similarly this could be what would be needed. Even for a second, a person’s bladder would need to be 1.6 gallons and expelled at a similar pressure. So not two seconds.

    • stinky@redlemmy.com
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      3 days ago

      3.2 gallon bladder to achieve 2 seconds? And what kind of pressure are we talking, would it just like totally blow your dick off or what

      • Theo@lemmy.world
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        3 days ago

        I mean a bladder can’t even hold a fifth of a gallon (more like 500ml) so we are already saying it is not possible but assuming there in the future is a human cyborg or a robot the same mass and volume as a human, they would need 60psi and 3.33 gal capacity for two seconds. This info is based on water powered jetpack companies that do this service. So, I did over look one thing: the jetpacks are dual and attached to your legs and they happen over water so not sure the rest of the calculations because I am not certain whether each jetpack has same psi for it to work or it is a combined psi and the water just comes from a hose so there is no capacity but the speed needs to be at least 100gpm.

          • Theo@lemmy.world
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            3 days ago

            That would be a challenge to find out. Because I would look for the material with the minimum durability, not just a metal tank, lol. Like what is the weakest material that can still withstand this type of thing.

            • stinky@redlemmy.com
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              3 days ago

              Silicone Rubber

              Polyurethane (PU) Elastomers

              Thermoplastic Elastomers (TPEs)

              or traditional latex rubber

        • bradorsomething@ttrpg.network
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          3 days ago

          I remember learning a bladder begins to spasm at 600mL, so we could actually use this spastic pressure to help us levitate. In this paper, I propose…

      • Theo@lemmy.world
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        3 days ago

        Well, for a minute of water jetpack it is 100 gpm, so I divided 100 by 60 seconds to get 1.6… for one second so two it would be 3 and a third gallons for two seconds assuming the right pressure of 60 psi.

          • Theo@lemmy.world
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            3 days ago

            We can only go 15-20 psi. I was taking the scenario as theoretically there was a human anomaly out there that could handle it lol.