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
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
Sometimes optoelectronics get cooled with cryogenic gasses, but in a howitzer? Sounds like bullshit
I can’t imagine requiring liquid nitrogen for a howitzer tho
I hope these people aren't fricking 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.
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.
>anti-NATO, pro-Russian account
>GenericWesternNamefollowedby10randomnumbers
the glow blinds me
its used to cool the barrel
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.
no its used to cool the barrel down when it heats up so you can use the weapon semi continuously
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
You wasted trips with lies. Never ever ever ever do they cool with LN
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.
lel except you can store gasoline in pretty much any container, not so with liquid nitrogenkd2tx4
Shrapnel will frick up a lot more than just the firing computer, like the tires/chassis, barrel, etc.
I wonder what shrapnel does the crew? lol fricking morons.
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?
I get titanium being a b***h 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.
I know there are artillerymen on /k/, does this gun actually use liquid N2 in its normal operation? or is this a vatnik lie?
it's perhaps not even vatnikism, might be reformist homosexualry. 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.
artygay 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.
thanks anon
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.
Hydraulic fluid is just some hydrocarbon, which isn’t N2
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
I couldn't find an M777 FM but I found an FM for the older M198, it does use nitrogen in the recoil system.
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
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
eeeeeeeeeeeeeeeeeeeEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE BANG
>eeeeeeeeeeeeeeeeeeeEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE BANG
Artigays are diabolical
They need it for the cooler containing the cold ones
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.
oh no where will we only get nitrogen from ?!
>dude just compress atmosphere in the vicinity of explosives
Mobile air liquefiers are actually pretty common
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?
should've used "banans" not mangoes
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
Hydraulic accumulators use nitrogen gas.
It's not LIQUID nitrogen though. Most people only know about liquid nitrogen, so it's an understandable frickup.
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?
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.
>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 frick 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.
sorry bro, but that's a peak dimwit post. you won't find liquid oxygen or nitrogen in a car shop.
If the car shop sells welding gases then yes they sell liquid nitrogen and oxygen. Its just in a 3000psi pressured vessel
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
Nope, just google "triple point nitrogen" or "phase diagram nitrogen", you absolute moron.
>pressure goes up, boiling point goes down
Wrong. Don't post if you don't know what the frick you're talking about
No, it’s probably just a stupid vatnik making an uneducated claim. Very typical.
>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
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.
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
in which case any pressurized nitrogen in a tank would do. Which is plentiful in car shops and gas stations.
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.
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 frick, 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.
Do the fricking homosexuals 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?
>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...
Sure buddy. Farmers just love to till ground in arid mountains and deep in caves.
>deep in caves.
Old myths die hard.
>old myths die hard
Thanks for letting me know that you are actually a moron.
Just 2 more weeks until we capture Kyiv fellow vatnikBlack person!
>The 777 has never been exposed to dust
>The computer breaks if it gets hit by shell splinters
Wtf is this guy? moronic?
>Twitter screencap of a blatant moronic 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 homosexual that it uses liquid nitrogen just to get the dunk on a foreign car.
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
cool disinfo, thanks
Yeahnah, dgaf just reporting what problems we had.
Finally getting the asiatic AS-9 and AS-10 SP and ARVs to frick 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.
>but our procurement idiots saw M777s cheap as FMS and bought it.
It's called graft.
Nah, it was just cheap - they'd have got more graft and free inspection trips to Germany if buying PzH2000s.
It was also Artillery Corps Fudds who wanted 'traditional' guns, not 'fancy tank-things that need Armoured Corps drivers and tank-crew training.
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.
You sure need special equipment to fix titanium and the gun recoil system use nitrogen (as an inert gaz not a liquid).
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.
>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 frickers at least TRY?
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 b***h
>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
>you dont 'hand a depot' like a box of ammo or a crate of MREs moron, 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 leaveand 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...
>US’ plan for donating artillery systems to Ukraine according to morons
>Step 1: donate the systems
>Step 2: nothing. Lmao. Who gives a shit about maintenance.
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.
You are so stupid it hurts.
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.
they're maintained in poland
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.
liquid nitrogen is easy to make
do russians think it's magic?