• jia_tan@lemmy.blahaj.zone
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    8 hours ago

    Famously transporting large volumes of hydrogen has never gone wrong and hydrogen charging stations have proven very reliable and also hydrogen as an alternative to electric is definitely not a ploy by big oil to keep drilling for fossil fuels!

    Good job hyundai 👍 Very credible 👍🏿

    • TranscendentalEmpire@lemm.ee
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      1 hour ago

      My dude, the military transports more volatile materials than hydrogen every day. Just because something doesn’t make sense for civilian use doesn’t mean it’s never going to be viable for military use.

      If you’re worried about the dangers of transporting something like hydrogen, you’re going to lose it when you find out what bombs are made out of.

      Electric motors are just more efficient in just about every way at scale, the current diesel motors being used in tanks aren’t really able to be improved upon. They’re at their technological peak, so the only way to move forward with mbt is by figuring out how to make electric motors work.

    • Voroxpete@sh.itjust.works
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      8 hours ago

      In the case of military vehicles, hydrogen is about the greenest option that we’re gonna get. No one is going to make a battery powered AFV, because where the fuck would you charge it?

        • EtherWhack@lemmy.world
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          2 hours ago

          If you ignore the fragility (creates a weak point to disable the tank) and the slow charging rate, dust and debris from firefights would be a pretty big issue.

          • Voroxpete@sh.itjust.works
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            8 minutes ago

            Also don’t fight at night. Or in the Arctic circle. Or really anywhere during winter. Or sandstorms. Dust storms. Overcast days. Rainy days. Snowy says.

            Y’know what, just conduct all your warfare during beautiful clear sunny weather at daytime. Why would you want to fight in crappy weather anyway?

      • DrunkenPirate
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        7 hours ago

        Who if not the Germans built an electric tank in 2020 https://efahrer.chip.de/news/geraeuschlose-einsaetze-weltweit-erster-elektro-panzer-kommt-aus-deutschland_103179

        Sounds crazy at first but comes with some good advantages: it can cross rivers as it doesn’t need air for combustion, it’s silent, and you can load it anywhere at the battle field if you have solar panels, time and sun. Still you can rely on military logistics to carry a swap battery. But isn’t the military supply chain the first target to disrupt? My two cents, this is the next thing at battle fields.

        Oh, and if all your equipment runs on electricity, you can load and reload power at your needs. Tank needs power but car not? Combat robot out if power and car is full? Transfer the power

        • Miles O'Brien@startrek.website
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          5 hours ago

          Honestly if MILITARY applications are what kicks renewable energy and mass storage into high gear, I won’t be surprised, but I will be disappointed.

          But hey, improvement is still improvement and if a military organization sees renewable as the future, they’re gonna try to make sure they get there first. As long as whoever gets there shares the progress with the rest of the world, I’m okay with it.

          But who am I kidding, it’s gonna be China or the US and the rest of the world won’t see shit for decades due to suppression of research and technology that would allow for similar specs to be achieved privately…

          … How credible is my aluminum foil hat guy?

          I must admit though, it’d be cool to see an armored combat battery sliding across a field to quick charge a tank that died mid-battle. 10 seconds of charging to get it up and running, and the battery moves to the next low power thing. I’m imagining a semi-autonomous hot-swap of a battery compartment and eventually recharging like modern airplane mid-air refueling. Insert Rod A into Slot A and wait a little bit. The faster they want it to charge, the more they’ll dump into R&D.

          • DrunkenPirate
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            2 hours ago

            Just wait some years - they have solid state batteries close to industry ready. That means huge increase in capacity and no issues with temperature.

            Next stage will be structural batteries where you take the structure as battery. For a tank that means all the armour will be charged and work as battery. Just a matter of years.

            Loading time is solved already. It’s a matter of battery temperature while infusing power and solved by battery management software.

            Any idea why the Boston Dynamics robots aren’t on a battle field? I mean the do incredible stunts. It‘s the battery. Lasts for around 2-3 hours. Today. Military is working on that, I‘m pretty sure.

        • zaphod@sopuli.xyz
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          5 hours ago

          Any reasonably sized pv installation near a battlefield will definitely not look suspicious on reconnaissance images.

          • DrunkenPirate
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            2 hours ago

            You think less suspicious than these huge petrol storages in a city?

            PV can be dismantled, if needed. I bet it’s even cheaper to replace when destroyed compared to petrol storage. Anyway, future will tell

        • Track_Shovel@slrpnk.net
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          5 hours ago

          Tanks are going the way of the battle ship though. Drones are doing a lot of the stuff they can do, and a lot of things they can’t.

          • xavier_berthiaume@jlai.lu
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            5 hours ago

            I’m not super familiar with the matter, but what do you mean by “going the way of the battle ship”? Do you mean they’re becoming more obsolete because of their size/utility compared to drones?

            • Track_Shovel@slrpnk.net
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              4 hours ago

              That, and expense. Tanks cost millions, while a $5k drone with an RPG strapped to it can take it out and exploit the weak spots.

        • aard@kyu.de
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          6 hours ago

          Still you can rely on military logistics to carry a swap battery. But isn’t the military supply chain the first target to disrupt?

          That’s true as well for hydrogen, though. And I guess there’s a higher chance of getting access to “power” somewhere in the field than finding a hydrogen tank. Also, energy density of lithium batteries is higher than for hydrogen storage.

        • gravitas_deficiency@sh.itjust.works
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          7 hours ago

          Yes, obviously, putting explosives and projectile propellants in an armored vehicle is dangerous and should be avoided

          /s

          OSHA is not a credible military threat

          • FundMECFSResearch@lemmy.blahaj.zone
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            6 hours ago

            Right, but you are going to want to choose a fuel that has the least chance of flaming up if you’re making a military vehicle.

            Hydrogen has (compared to petroleum) a Wider Flammability Range, Lower Ignition Energy (0.02 millijoules) which is really low and much smaller than petroleum, and a higher diffusion rate.

            All of which make it more likely to go kaboom.

            • TranscendentalEmpire@lemm.ee
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              57 minutes ago

              Right, but you are going to want to choose a fuel that has the least chance of flaming up if you’re making a military vehicle.

              Why? If something has gotten through the armour, your fuel is the least of your worries. I mean you are sitting next to a stack of shells filled with high explosives.

                • TranscendentalEmpire@lemm.ee
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                  4 minutes ago

                  My point is that if your tank’s armour is compromised by modern antitank weapons, it doesn’t really matter where it hits you. You’re going to be turned into chunky marinara, or your shells are going to cook off.

                  A pressurized fuel cell is already more protected than any fuel tank, and is smaller and lighter and more efficient than any ice engine. Which means you can add and divert even more armour to protect the cell and the occupants of the tank. Basically any danger associated with hydrogen is vastly overshadowed by the fact that tanks already carry high explosives. And that’s not so dangerous that we’re trying to replace them with non combustible weapon systems.

                  It’s not like Rotem is new at making tanks, the K2 is one of the best tanks currently in production. If the engineers thought fuel cells increased the likelihood of catastrophic failure, I highly doubt they would have tried it with the K3.

                  Personally, I think most people are just buying into the propaganda that shut down hydrogen power in the first place. To my knowledge there hasn’t ever been a death associated because of an explosion or fire involving a vehicle with h2.

            • Uranium 🟩@sh.itjust.works
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              6 hours ago

              Silly one, and but do tanks run on diesel?

              Every other heavy machine I can think of typically uses diesel for their engines: tractors, lorries, boats.

              Also diesel is less flammable then petrol or hydrogen in the event of a spill of leak…

              • TranscendentalEmpire@lemm.ee
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                50 minutes ago

                The problem with diesel is that there has been a cap in their efficiency for quite some time. We’ve pretty much tweaked as much speed and efficiency out of what is possible with diesel tanks, which is why the Abrams has a turbine engine.

                As tanks become heavier and heavier the only real solution is to migrate to electric motors, which are more efficient and vastly more reliable than diesel or turbine.

                Just like with trains, the future of tanks are electric motors, and until we find a battery material more efficient and safe than lithium, hydrogen fuel cells are likely going to be the solution.

    • Geometrinen_Gepardi@sopuli.xyz
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      7 hours ago

      hydrogen as an alternative to electric is definitely not a ploy by big oil to keep drilling for fossil fuels!

      What are you talking about?