Oerlikon Mk2 1941
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- Опубликовано: 1 окт 2024
- The 20mm Oerlikon is a Swiss designed auto cannon used for high angle close range anti-aircraft fire, with an effective rang of 1,000 to 1,200 yards (915 - 1100m). The breech is not locked at the time of discharge and the round is fired a fraction of an inch before it is fully home in the chamber, the neck of the case swelling to form a gas seal. Muzzle velocity 2,725 ft/sec (830m/s) with a rate of fire 465 to 480 rounds per minute. The 20mm rounds are loaded into magazines holding 60 rounds. The last 2 rounds loaded are usually practice rounds so that if there is insufficient time to remove the muzzle cap the non-explosive rounds can blast through the cap. All cartridges are lightly coated with mineral grease when loading to assist the spent cartridge extraction.
The Mark II gun was made in Britain and in the USA principally for naval use. This animation shows the British Mark II. Models made in the USA are marked Mark II U.S.N or Mark IV U.S.N. There is no difference between these Marks and all three are interchangeable.
The animation was made using Cinema 4D and the music is ‘Song of Mirrors’ by Unicorn Heads. Source material: BR 274/41, OP911 and OP909 and author’s photographs.
If you enjoyed this animation please check out the Vbbsmyt channel on RUclips for other military-related animations, and consider sponsoring me through www.patreon.com/vbbsmyt.
This designer:
"When in doubt, use more springs!"
..."And if that doesn't work?"
..."Use *MORE* springs!!"
Can you imagine a world without springs?
@@smorrow
First, are we taking about exactly springs (coiled metal wire), or ALL "springy things" in general?
Eg. Would a leaf spring exist?
Would rubber exist?
Can compressed air in a pneumatic piston be considered as such a spring?
@@sebbes333 It's just a reference. 'a world without springs' on RUclips.
@@smorrow It is still an interesting concept, we would have almost NOTHING today, especially if "everything springy" would be removed, we would be back to like early gathering technologies.
KSP school of thought
This is AWESOME! *Please* never think we don't appreciate your efforts.
Love your stuff!
☀️😎☀️🇺🇸
Fun fact: the solid practice shot is the first cartridge in the magazine in case the muzzle cover is either stuck on the gun through ice, negligence or some other reason. The practice shot removes the obstruction so that the shell that comes after it doesn't detonate in the barrel.
absolutely correct, but those are the first 2 shots, just to be positively sure its not obstructed.
you really dont want an HE round blowing up right in your face...
That reminds me of the reason 20mm was so common. The reason is actually a legal one. There was (and still is) a ban on exploding bullets and the cut-off point between a "bullet" and a "shell" is 20mm. So 20mm is the smallest caliber you're allowed to add a bursting charge.
Never would have guessed how complicated this one was. Great job!
In Relation to comparable weapons it was relativly simple. That was the main reason for it's sucsess (sorry for my english)
@@hansgruber3397
Your English is fine! I never realized how many interlocks and safeties there were. Really neat weapon.
my favorite part is the fact its blowback i love unqiue ways people deal with the bolt recoil
@@popinmo Yep, and now Sig has come out with their MG-338, which copies the General Dynamics concept, which in turn was inspired by Advanced Primer Ignition. In these modern machine gun iterations, the whole assembly is locked back a bit and when the trigger is pulled, the assembly slides forward and right before it hits the end of travel, the gun fires, the recoil mitigation effect is identical to this gun then, just that it is the whole assembly rather than mostly the bolt.
Wonderful animation. Very very interesting! Thank you!
Thank you very much for the elaboration of this famous weapon, I am thrilled every time something new comes along.
Absolutely wonderful! Tons more detail than you could ever see even with a real model. I hope you could do a video on one of the German torpedoes from the second world war
My Dad enlisted in the Coast Guard during WWII. He was a Radio Operator and 20mm gunner. He would have loved this.
He related a story that during gunnery practice, they had a misfire. IIRC, the drill was for the gunner's mate to remove the barrel and dunk it in a bucket of water kept there for that type of emergency. The idea was to prevent the round from cooking off in the barrel.
The gunner's mate removed the barrel but missed the bucket twice. The patrol frigates were small ships and not the most stable vessel in rough weather. Dad's gun was just outside the bridge. The mate heaved the barrel over the side and into the ocean. I'm not sure what the repercussions were but the guys, including my dad, were glad to see it gone.
This cannon doesn't seem like a big deal now-but in the 1930s absolutely everyone was struggling to come up with a decent 20mm autocannon that was both light weight and reliable. The Germans originally had the Becker 20mm-a gun which met the design goal of being very light but compromised on everything by using a cartridge with a low muzzle velocity. That said, the original Oerlikon design was based on that gun now with a more powerful 110mm cartridge and the Oerlikon version was so successful that the Germans retroactively copied the Swiss' version back as the MG/FF.
The other competitor was the 25mm gun Hotchkiss came up with-but that gun was very heavy and fired from a static mount only.
The Americans came up with an equivalent gun-the 1.1in/75 which was actually 28mm although it lived in the same realm as the Oerlikon-but it was notoriously troublesome and complicated. Twenty-eight millimeters was also something of an awkward caliber-the idea was to make a good one-stop-shop gun that could fight all kinds of aircraft but in practice you ended up with a gun that was too light to shoot down many bombers and too heavy to be used in most mounts.
The Oerlikon is still in production to this day-along with the M2 Browning that should give one an idea of just how successful it's been in its category.
Thank you for posting that!
This was my dads station on USS Amsterdam CL - 101. He said you couldn't hit the side of a barn with one but they just sprayed it in the general direction and hoped. Good to see the operations and how they are put together.
Not surprised, they're basically big open-bolt submachine guns and their 20mm round is pretty shit since it had to be underpowered for the Orelikon's blowback bolt lol
Nice to see a lot of new Videos.
Some written explanations about what is happening and why would be great, I do not understand every detail. Great work!
PS. It's gotten better with the explanations, thanks.
Awesome!! very fine production!! Congrats!!!
Brilliant! Can't understand why you have a downthumb on this. It would be awesome to see an animation of the Hughes M242 25mm chain gun. That is a interesting mechanism. Thanks for posting this
Thank you for teaching us. It’s so complicated and intricate, beautiful
What do you mean? Its operating systems seems incredibly simple if you ask me.
@@somerandofilipino6957 the magazine release and floating trigger is kind of ridiculous. This is no uru smg even though it’s like a giant smg
@@yelectric1893 Yeah you're right. And its Uru, actually
@@somerandofilipino6957 oops. Have you seen the bofors animation? It is not as straightforward as this one.
Thanks for helping me better understand the weapon my father used in the US Navy during WWII.
This inertia+big spring delayed blowback system is wild. I would have thought that any sane weapon above pistol cartridges needs some kind of locked breech.
not 'sane' though
The downside of blowback is very low rate of fire.
Advanced ignition makes it lighter but less reliable and ammo-fussy.
So locked breech is the only way to make a light, reliable, non-fussy and fast gun
I used to be a loader on one of these back in the 90s before they were replaced by the Gambo 20mm.
The reason the RN still used them them was the ammount of ammo still available for it.
I remember greasing the individual rounds before charging the mag, a real pain.
At one point we had to go through fifteen mags to use up the last rounds when the gun stopped working.
There was nothing wrong, no jam, no misfire, the gun simply stopped firing; strange!
PERFECTION!
Very perfect job 👍
Thanks a lot
So its a bunch of springs
and levers.....
Thank you very much for this, I've been trying to understand the mechanism of the oerlikon for ages now, this is a giant relief for me
Nice, I'll need to watch it again to understand it all though :)
I found this video fascinating as my father manned one of these during WWII. He was in the Naval Armed Guard, a part of the U.S. Navy. He served on Liberty ships going across the North Atlantic. When I was a kid about 12yrs old we came across one on a museum ship in NY City. He was overjoyed and told me all he could remember. On the inside of the gun shield stenciled in black was "Lead Dammit Lead". In reference to the gun sight. It has 3 rings. Each ring represents the target's estimated air speed in increments of 100. The first round in the magazine was a blank. That was there to blow out any obstruction such as a forgotten cleaning rag. Every fifth round was a tracer and the rest a mixture of AP and HE rounds. At the base of the pedestal the gun was mounted on was a 3' diameter ring that the operator stood on. About 6-8" above the ground. He was strapped on so as not to fall off. It allowed him to pivot quickly to address targets. Also you didn't wear a shirt while manning the gun or it would need replaced. Spent shells that hit the operator would burn holes in it. My father had many burn scars on his chest from his tour of duty.
Thanks for sharing this information, always good to hear from the people who used the weapon or equipment (or their close family).
Fascinating - when I studied the 20mm Oerlikon, I didn't know it could fire blanks. Also interesting to know the gunners were strapped to the gun with a harness.
Absolutely amazing, both the mechanism and your animation. Keep on making. Turned on all notification from your channel.
Thumbs up for Swiss engineering.
Absolutely Brilliant. Thankyou so much. Must have taken hours!!!! can i throw another at you ..... WW2 Browning 50 cal M2 HB on an M63 tripod. !!
Always with the good stuff. :-)
BRILLIANT . I have studied this gun , but this gives it a completely new light , thank you .
Fantastic! Love to see the mechanics and design!
Thank you so much my friend for your amazing video. My father served on navy he was a gunner on o erlikon boforce and 5inch guns your video is exactly with the description of my father's. Thank you again keep up the excellent work. IF you can please create a video with twin naval - AA guns 5inch like BB USSMissouri's secondary armament
Very well done - big thanks!
YEEESSSS!!!! YEEESSSS!!!! THE OERLIKON!!
Plan B - 3 strong men!🤣🤣🤣
bloody brilliant as usual!
I wonder, does it get harder to move as the shell bag fills up ?
Probably. Though certainly not as difficult to move as it would be if you had to wade through a pile of 20mm casings.
@@overboss9599 yeah that does make sense now that you mention it
No, the bag is directly below the centre of the gun (and close to both pivot-points) and it gaining weight doesn't matter much.
Every couple of magazines of 60 rounds each, you need to change the barrel. This is also the time to put a empty ammunition-container underneath the bag and dump out the empty cartridges via an opening at the bottom. In other words, you empty the bag before its weight or (more likely) bulk becomes a problem.
I need 100 boxes of those to buy ok
I want to #request for creating a animation about Thompson M1921 Submachine gun
I need 4 boxes of those to buy ok
Wow! Thank you very much. It's so interesting and educational! Can you please show the German mg108 cannon in one of the following videos?
Great job! Thank you very much, and best wishes.
Fascinating!
Always thought it had somewhat simpler design.
...
Thanks for your hard work! I always wondered what was inside the mechanical monsters!
Such genius features...
Great job at modelizing that.
Damn, you are good. Thanks.
Good job
So it's a simple blowback-operated mechanism, firing from an open bolt. Basically, a Sten on steroids.
Awesome. Idea, german 20,37, 50mm flak and hotchkiss 25mm AA gun
Great vid man! What software do you use to design the weapons? I tries using blender for my technic projects but it doesn't help me "reproduce" complex or even basic mechanical systems. Shit gets overlaid and i can't make anything move like it should.
Details in the notes for the video - Cinema 4D
@@vbbsmyt thank you! Sry for not reading the entire description.
Now this is what I'm talking bout cannons..💣💯💪🔥
hey do the uss iowa 16 /50 caliber mark 7 gun
I would hate to be the one to disassemble this device and clean it in preparation for the next kamikaze attack of the day.
Very much a blowback action autocannom
Thank you again for a clear animation. Makes understanding so much easier
A seemingly simple and unassuming weapon system, but being swiss it's a fine-tuned mess of levers and springs, the fire control group especially is something mind boggling, must've taken a while to sort out, this think is a cuckoo clock for using Advanced Primer Ignition, which should supposedly allow for a simpler mechanism
Jesus, it ripping off a burst like that made me jump.
BOY...I SURE could have used this when I had one of these, it was the Japanese HO-5 auto-cannon out of a WW2 Zero fighter...Also the one shown in Red Jacket Firearms TV show. I had a hell of a time trying to figure out the trigger-sear mechanism....Now it make sense! Probably just as well, like they said in the TV show!
That return spring looks nasty.
Well it is a straight blowback 20mm. I would hope the springs would be beefy
Wery good!
Bring Back the Oerlikon 20 mm cannon MK5 would benefit in the Gulf and you couldn't say an MRAP wouldn't look sexy in a CROWs mount in belt feed mode.
The first two rounds were "dummy"/"practice"/solid shot for a safety reason... in case of a clogged barrel, gun no go BOOM with live round! Its funny when it happens to Elmer Fudd, not so much in real life!
I want one of these to protect myself from traffickers here in Brazil
literally big open bolt submachine gun
You got a ZU23-2 or KPV video?
Tienen otra animación en español de 20 milimetros
*si vis pacem para bellum*
Siapapun yg menghendaki damai, maka bersiap lah untuk mabar!
Top
There's been enough comments on the animations themselves, so I'm not going to repeat them, but I'd like to ask you one question. Have you, perhaps, considered uploading in two versions, one as they've been and the other, for the faint of ears, with some mild background theme, like workshop sounds or even some forest sounds, or perhaps some piece from the era (and operating sounds as well, obviously)?
Edited: I wrote the above before watching the animation, and the music is very pleasant :)
Oerlikon then: normal 20mm AA
Oerlikon today: haha 35mm go BRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR
TIL these things are an open bolt, straight blowback... autocannon. That is both fascinating and horrifying all at once.
This is super cool. I really, really enjoy this stuff. And I'll prattle on and on (with rewinding as necessary) to anyone who will listen, as I put 2+2 together while watching.
So a quick story, my grandfather was a Gunners Mate on an attack cargo ship in the pacific in charge of these guns and he said at the end of the war of course they disassembled and cleaned these guns but when it came time to put the barrels back in they just twisted them hand tight since they weren’t planning on firing them anymore.
Of course they have a flag officer visit and they want to do an inspection and weapons demonstration. They start firing and bang bang bang plop splash the barrels unthreaded and launched off the side of the ship he said they sent like 4 new gun barrels down to the bottom that way and of course got chewed out for it
Wait, is that a big AF blowback smg ?
I am looking for the dimensions of this gun for the Victory model ship scale 1:50, beautiful animation
What is the name of this software?
I would like Twins!😇
6:19 the case left behind?
Very nice, am surprised they didn't put a ratch handle on the charging mechanism.
Ironic considering that it comes from a country never known for military conflict
👍
Thank you absolutely fascinating 😀 and I didn't think it would be my mistake 😅
Longest day Ouistreham...
These are mesmerizing
Tegal merdeka
Ъ0
Excellent rendering. Thanks for posting.
Nice animation man, can i request you to make m2 browning animation
Great animation work have become a subscriber
Please make video about Soviet autocannon
Beautiful
wow nice work. Did you design these cad models yourself? How on earth did you find old accurate blueprints?
This animation was generated from manual’s available on the web, including the Historic Naval Ships Association (HNSA) web site. This has 2 manuals on the Oerlikon OP 911 and OP 909, and I have used the drawings and instructions for the animation. So accuracy is a relative term.
@@vbbsmytamazing, I want to find those manuals now 😊
I found the files and there’s so many! How long did it take you to model it?.?
Name game
You must be an engineer to understand all this lol.
Is there enough material available to animate a 1.1"/75? I've always been curious about how the thing actually functioned.
In regards to your already-completed works, top-notch stuff.
"I've always been curious about how the thing actually functioned"
Well, it didn't :p
Thanks for posting . Very good video !
your animations are glorious. subbed.
It amazes me that this cannon is simple blowback. Normally you'd expect a weapon of this calibre to have a locking or delay mechanism.
explore the history and you'll find 20mm design started with blowback operation and advanced primer ignition.
Looks like great recoil control mechanism.
make one of the Scotti Model x
шикарно, особенно обрыв гильзы с раздутием