M777 needs liquid nitrogen?

Some twitter thread suggests that the M777 uses liquid nitrogen as a consumable: for what purpose? Surely not on the battlefield? Do they mean for repairs? Or is this post just bullshit

  1. 4 days ago
    Anonymous

    Sometimes optoelectronics get cooled with cryogenic gasses, but in a howitzer? Sounds like bullshit

    • 4 days ago
      Anonymous

      I can’t imagine requiring liquid nitrogen for a howitzer tho

  2. 4 days ago
    Anonymous

    I hope these people aren't fucking kidding. Do they think "shrapnel" hitting the artillery computer will make it not last long? How about the troops getting hit standing around the gun? That might stop it from firing if they aren't packing up and moving or in a relatively safe location.

    • 4 days ago
      Anonymous

      Not sure how they're faring now, but there was info from when the artillery battle was taking place in the Donbass. They said the Russians counter fire them very fast (they were practically waiting for them), so they usually have to pack up after firing 2-4 shots and move away. If not done fast enough, the gun is usually damaged and has to be shipped back for repairs.

  3. 4 days ago
    Anonymous

    >anti-NATO, pro-Russian account
    >GenericWesternNamefollowedby10randomnumbers
    the glow blinds me

  4. 4 days ago
    Anonymous

    its used to cool the barrel

    • 4 days ago
      Anonymous

      Youre not going to cool the barrel with nitrogen during combat, if it even is used (and I doubt it) it would be as maintenance.

      • 4 days ago
        Anonymous

        no its used to cool the barrel down when it heats up so you can use the weapon semi continuously

        • 4 days ago
          Anonymous

          the heat capacity of nitrogen is shit when compared to water, you don’t want to cool the barrel to cryogenic temps, which water can’t and N2 can do

        • 4 days ago
          Anonymous

          You wasted trips with lies. Never ever ever ever do they cool with LN

  5. 4 days ago
    Anonymous

    Liquid nitrogen is needed in all civilized places anyway, and is just as hard to handle as gasoline. In military applications it is probably used to cool components to reduce noise in signal.

    • 4 days ago
      Anonymous

      lel except you can store gasoline in pretty much any container, not so with liquid nitrogenkd2tx4

  6. 4 days ago
    Anonymous

    Shrapnel will fuck up a lot more than just the firing computer, like the tires/chassis, barrel, etc.

    I wonder what shrapnel does the crew? lol fucking retards.

    I didn't use the 777, but I briefly trained on it and we never required nitrogen to train on it or fire it. Maybe it's a periodic maintenance requirement though?

  7. 4 days ago
    Anonymous

    I get titanium being a bitch and a half to repair, but liquid nitrogen is just horseshit. A howitzer isn't going to contain anything that could possibly require that kind of cooling.

  8. 4 days ago
    Anonymous

    I know there are artillerymen on PrepHole, does this gun actually use liquid N2 in its normal operation? or is this a vatnik lie?

    • 4 days ago
      Anonymous

      it's perhaps not even vatnikism, might be reformist gayry. Seriously, dust? He does know these were used in the middle east right? and repairs? repairs for what? Sure it needs maintenance, even at conservative firing schedule you need to replace barrels. But he's acting like it's a swiss watch, not a cannon on wheels.

    • 4 days ago
      Anonymous

      artyfag here. I was a paladin guy, but never used nitrogen when I fired the 777 in training. My guess is maybe as a part of periodic maintenance?

      I am not an artillery expert but am somewhat familiar with hydraulics. He probably means recoil system that uses hydraulics and nitrogen. Hydraulic fluid transfers energy and nitrogen is inert gas(you dont want high pressure oil combined with high pressure oxygen source) which compresses and absorbs the energy. Google hydraulic piston accumulator. Of course neither hydraulic fluids nor high pressure nitrogen are anything special, this is basic shit when dealing with excavators etc.

      Firing the 777 recharges (repressurizes?) the hydraulics used to load it (some weird lifter mechanism, and maybe something else, its been 10 years). Dry fire means you have to pump it a few times to recharge it. But we never had to put anything like nitrogen into it, even after firing/dry firing all day.

      • 4 days ago
        Anonymous

        thanks anon

  9. 4 days ago
    Anonymous

    I am not an artillery expert but am somewhat familiar with hydraulics. He probably means recoil system that uses hydraulics and nitrogen. Hydraulic fluid transfers energy and nitrogen is inert gas(you dont want high pressure oil combined with high pressure oxygen source) which compresses and absorbs the energy. Google hydraulic piston accumulator. Of course neither hydraulic fluids nor high pressure nitrogen are anything special, this is basic shit when dealing with excavators etc.

    • 4 days ago
      Anonymous

      Hydraulic fluid is just some hydrocarbon, which isn’t N2

    • 4 days ago
      Anonymous

      Yeah you're right, most artillery pieces use a hydropneumatic recoil system where the pneumatic part is mostly performed by nitrogen. It's probably a consumable just as hydraulic fluid as there will probably be a small leak somewhere

    • 4 days ago
      Anonymous

      I couldn't find an M777 FM but I found an FM for the older M198, it does use nitrogen in the recoil system.

    • 4 days ago
      Anonymous

      Correct. There’s a manual method to charge the pnuematics if they don’t work (spoiler: they’re always broken) so you’ll see the bunnies “rowing the boat” when they need to do something pnuematically.

      T ex 777 PL

      I know there are artillerymen on PrepHole, does this gun actually use liquid N2 in its normal operation? or is this a vatnik lie?

      No, the twitter screencap is an idiot who heard something about nitrogen and extrapolated as far as it could go because functioning weapons are wunderwaffen to him

      artyfag here. I was a paladin guy, but never used nitrogen when I fired the 777 in training. My guess is maybe as a part of periodic maintenance?
      [...]
      Firing the 777 recharges (repressurizes?) the hydraulics used to load it (some weird lifter mechanism, and maybe something else, its been 10 years). Dry fire means you have to pump it a few times to recharge it. But we never had to put anything like nitrogen into it, even after firing/dry firing all day.

      eeeeeeeeeeeeeeeeeeeEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE BANG

      • 4 days ago
        Anonymous

        >eeeeeeeeeeeeeeeeeeeEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE BANG
        Artifags are diabolical

  10. 4 days ago
    Anonymous

    They need it for the cooler containing the cold ones

  11. 4 days ago
    Anonymous

    It's a fabricated cope story with a negative narrative, aimed at the success of the western capability to send M777 to Ukraine and see it obliterate russians easily.

    It's completely made up by the propaganda agents of the illegal Moscow regime.

  12. 4 days ago
    Anonymous

    oh no where will we only get nitrogen from ?!

    • 4 days ago
      Anonymous

      >dude just compress atmosphere in the vicinity of explosives

      • 4 days ago
        Anonymous

        Mobile air liquefiers are actually pretty common

  13. 4 days ago
    Anonymous

    Arhur, one last heist for the nitrogen and we can to go off away from this oblast, out of america and eat mangos in glorious crimea under wise putins rule, protected by mighty russian S500, SU57, Arthurvich did you off know russia has T I G E R S. Is too much ask for faith?

    • 4 days ago
      Anonymous

      should've used "banans" not mangoes

  14. 4 days ago
    Anonymous

    found this https://man.fas.org/dod-101/sys/land/lw155.htm
    which says that nitrogen is used as part of the recoil system, but why would it have to be cryogenic, instead of just bottles? Maybe it’s a bad translation or something

    • 4 days ago
      Anonymous

      Hydraulic accumulators use nitrogen gas.

      It's not LIQUID nitrogen though. Most people only know about liquid nitrogen, so it's an understandable fuckup.

      • 4 days ago
        Anonymous

        It’s got to be a bad translation or something. maybe vatniks call bottles nitrogen, like what you see in welding shops or at airgas, liquid for some reason?

        • 4 days ago
          Anonymous

          I wouldn't be surprised if their autocorrect tries to force it to say 'liquid nitrogen'. I don't know, though, I'm not ESL.

        • 4 days ago
          Anonymous

          >like what you see in welding shops or at airgas, liquid for some reason?
          Well, the stuff in those bottles IS liquid. You'd get fuck all into the bottle otherwise. Press gas in, pressure goes up, as the pressure goes up the boiling point goes down and eventually shit turns to liquid. (Same goes for flasks of propane, oxygen, acetylene, argon, etc. Gas is simply to bulky for storage otherwise.) I suspect there isn't really anything special about a big bottle of explicitly liquid N2 either (beyond having a large enough opening that you can pour it out instead of having a pressure valve stuck on), except perhaps a touch more insulation. It isn't going to stay magically super cool, you simply open things up so the pressure is relieved, this makes it start boiling, boiling removes heat so it cools down, and eventually you're down to the boiling temperature at standard pressure. (Insulating the tank means it heats up less between uses if you use it frequently enough, meaning less gas is lost to boiling-off before it's down to super cold).
          As a tangents, making liquid N2 is pretty trivial. Around here semi-major users (hospitals, research labs, industries) won't buy it from a chemical supply company, they instead flat out rent a machine that plays around with pressure and temperature to distil out pure-enough N2 from the air, to be used as gas or liquid.

          • 4 days ago
            Anonymous

            sorry bro, but that's a peak dimwit post. you won't find liquid oxygen or nitrogen in a car shop.

            • 4 days ago
              Anonymous

              If the car shop sells welding gases then yes they sell liquid nitrogen and oxygen. Its just in a 3000psi pressured vessel

              • 4 days ago
                Anonymous

                Nah anon, LOX and LN cannot be liquefied by just pressure alone like CO2 and LNG can. Non-dewar oxygen and nitrogen bottles are just gas

          • 4 days ago
            Anonymous

            Nope, just google "triple point nitrogen" or "phase diagram nitrogen", you absolute retard.

          • 4 days ago
            Anonymous

            >pressure goes up, boiling point goes down
            Wrong. Don't post if you don't know what the fuck you're talking about

        • 4 days ago
          Anonymous

          No, it’s probably just a stupid vatnik making an uneducated claim. Very typical.

  15. 4 days ago
    Anonymous

    >M777 uses liquid nitrogen as a consumable
    the m777s we sent to ukraine were stripped of a computer that integrated with some kind of battlefield net.
    i'm not 100% sure what it did exactly but it might've require liquid nitrogen
    these computers were removed because we didn't want them falling into russian hands and the Ukrainians didn't need them

    • 4 days ago
      Anonymous

      The 'computer' interfaces to AN/PRC-117 Singcars comms net.
      Ukies wont have that anyway, so pointless to leave it on, plus they break easily.

  16. 4 days ago
    Anonymous

    For the recoil mechanism. It's compressed when the gun fires, and the decompression pushes the gun back into battery. At least, it it's anything like the shifty 105 mm guns I operated.

    t. artillery zogbot

    • 4 days ago
      Anonymous

      in which case any pressurized nitrogen in a tank would do. Which is plentiful in car shops and gas stations.

  17. 4 days ago
    Anonymous

    So does the suspension in the Stryker but we hardly ever had it unless it went for a major overhaul from the factory contractor's workshop.

    • 4 days ago
      Anonymous

      I wouldn't be surprised if their autocorrect tries to force it to say 'liquid nitrogen'. I don't know, though, I'm not ESL.

      Oh sweet jesus, could this be why the vatniks have such a massive failure rate with their artillery? They've been pouring LN2 where it only asked for nitrogen? Holy fuck, that would be hilarious if that were doable. I'm not a mechanic, but I'm picturing their hydraulics shattering to bits at the first firing.

  18. 4 days ago
    Anonymous

    Do the fucking gays who make these absurd claims that western shit will break if someone breaths on it not realize the the M777 was used in combat by the US for two decades with great success?

    • 4 days ago
      Anonymous

      >in combat
      No Talib counter-battery fire
      Fixed FSBs and FOBs with mobility only by C-17 into country then CH47s locally, not long road moves

  19. 4 days ago
    Anonymous

    >the the M777 was used in combat by the US for two decades with great success
    Against farmers...

    • 4 days ago
      Anonymous

      Sure buddy. Farmers just love to till ground in arid mountains and deep in caves.

  20. 4 days ago
    Anonymous

    >deep in caves.
    Old myths die hard.

  21. 4 days ago
    Anonymous

    >old myths die hard

    Thanks for letting me know that you are actually a retard.

    Just 2 more weeks until we capture Kyiv fellow vatnikmoron!

  22. 4 days ago
    Anonymous

    >The 777 has never been exposed to dust
    >The computer breaks if it gets hit by shell splinters
    Wtf is this guy? Retarded?

  23. 4 days ago
    Anonymous

    >Twitter screencap of a blatant retarded shill account
    If gopniks and vatniks saw a shock absorber used in a car and were told it uses nitrogen for pressurization they would lie out of their shitty mouth-rectums that they pound each other in and scream no homo that it uses liquid nitrogen just to get the dunk on a foreign car.

  24. 4 days ago
    Anonymous

    Straya bought M777s to replace M198s as towed artillery.
    777 is a lightweight gun designed to be lifted into FSBs by CH47s
    Tow them on roads and highways with Trucks.
    >fire control units shake apart despite being on cable spring mounts
    >carriage cracks apart - Titanium special welding required
    Ukies will be having the same issues towing their 777s as they dont have CH47s
    777 is not a general purpose towable gun

    • 4 days ago
      Anonymous

      >in combat
      No Talib counter-battery fire
      Fixed FSBs and FOBs with mobility only by C-17 into country then CH47s locally, not long road moves

      >the the M777 was used in combat by the US for two decades with great success
      Against farmers...

      cool disinfo, thanks

      • 4 days ago
        Anonymous

        Yeahnah, dgaf just reporting what problems we had.
        Finally getting the moron AS-9 and AS-10 SP and ARVs to fuck off the 777s.
        Its a good gun - the barrel and its effects, but its on a comparatively flimsy carriage that was only for yank-style airmobile usage and we tried to drag it thousands of klicks even on good highway roads to exercise areas. Then wondered why it was always breaking bits.
        We should have gone straight from 198s to AS9s or PHz2000s as we originally planned, and saved a decade of breaking 777s, but our procurement idiots saw M777s cheap as FMS and bought it.

        • 4 days ago
          Anonymous

          >but our procurement idiots saw M777s cheap as FMS and bought it.
          It's called graft.

          • 4 days ago
            Anonymous

            Nah, it was just cheap - they'd have got more graft and free inspection trips to Germany if buying PzH2000s.

            • 4 days ago
              Anonymous

              It was also Artillery Corps Fudds who wanted 'traditional' guns, not 'fancy tank-things that need Armoured Corps drivers and tank-crew training.

  25. 4 days ago
    Anonymous

    I mean, the Stinger uses Argon as coolant, liquid N2 is probably cheaper.
    But you probably don't have to supercool your barrel unless you need high performance long term stuff.

  26. 4 days ago
    Anonymous

    You sure need special equipment to fix titanium and the gun recoil system use nitrogen (as an inert gaz not a liquid).

  27. 4 days ago
    Anonymous

    A dozen different armies have sent their random unwanted and secondhand AFVs, Guns, missile systems in a rush to Ukraine.
    >all with no spare parts inventory
    >no trained maintainers - its not a standard commercial diesel engine mechanic to fix a hydropneumatic gun stabilisation system
    Most of the donated gear isnt expected to survive more than six months, or less, but it's free and marginally or better than what they already have.
    Post-war Ukraine is going to be a junkyard of unsalvageable random shit.
    Hopefully they sell most of it to collectors for reconstruction and relief aid money.
    Tractor drivers are going to make a mint.

    • 4 days ago
      Anonymous

      >america handed several hundred m777 to ukraine without a single maintainer or depot
      >any of these countries handed shit off that wasn't already similar to or the same as a system the ukies already had without maintainers and spare parts
      can you fuckers at least TRY?

      • 4 days ago
        Anonymous

        There are no US Depots in Ukraine.
        DoD and State wont even let trainers in rearest of remf areas in case of a random missile hit.
        Non-supply pogs have no idea how many hundred ISO containers of spare parts it takes to support a single system - you can take the 'usual' breakage spare parts, but Murphys Laws it will be some random part that snaps making the whole system u/s and so you need a hundred of every little widget and mil-only overpriced specced bolt and nut
        >combat is simple, logistics is a bitch

        • 4 days ago
          Anonymous

          >this means the US can't just hand them the depots and train people to repair the systems, or even just drive them back into Poland

          • 4 days ago
            Anonymous

            >you dont 'hand a depot' like a box of ammo or a crate of MREs retard, its a factory sized set of buildings full of trained experts and the aforementioned hundreds of tonnes of parts, specialist tooling, diagnostic machines, workstands
            >if it can drive back to Poland it isnt broken - you'll have to drag every single vehicle back on low-loaders or pay the tractor farmers to spend weeks on each one
            How to tell youve never seen a base repair workshop or a national vehicle recovery plan...

            • 4 days ago
              Anonymous

              >US’ plan for donating artillery systems to Ukraine according to retards
              >Step 1: donate the systems
              >Step 2: nothing. Lmao. Who gives a shit about maintenance.

              • 4 days ago
                Anonymous

                Pretty much.
                Nobody on JCS is going to tell Pelosi, "sorry, no, to send those guns means, sending at least 500 maintainers and CSS pogs unprotected into the warzone"
                >just send the shit, let them get a PR photo of it coming off the C17, maybe it'll last a few months.

              • 4 days ago
                Anonymous

                You are so stupid it hurts.

              • 4 days ago
                Anonymous

                Okay, supergenius, show us ONE single picture of a Ukie fixing a western bit of gear that isn't Ivan's home garage with an oxy-torch and a sledgehammer.
                There is no repair and maintenance plan - either it lasts until victory or it breaks during the defeat.

              • 4 days ago
                Anonymous

                they're maintained in poland

            • 4 days ago
              Anonymous

              95% of /k are neverserved who have no idea how logistics or recovery works.
              To be fair so do 90% of grunts and LTs, they think the motor pool Sgt just has a magic wand that makes all their trucks g2g the next morning and carries a spare gearbox in his daysack.

  28. 4 days ago
    Anonymous

    liquid nitrogen is easy to make
    do russians think it's magic?

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