For those wondering, the golden looking metal is called Aluminium Bronze, it's currently the go to choice for its toughness, corrosion resistance, and ability to prevent much of the buildup that other materials can experience.
Has to protect against cavitation well I am sure too. Not sure what makes something good for that but do know it is important and why people are investing in those new propellers. Uh toroidal I believe they are called. (Also more efficient!)
@@dianapennepacker6854 prop design is also specific to the actual use case, so something like toroidal may or may not add value - ducting alone can reduce some issues of exposed tip designs, and some of the directional pods as shown are ducted. BUT, I would love to see a cargo ship study using toroidal optimized for speed and ocean use just the same.
@@indridcold8433 Saw the one with each blade forming a sort of half mobius knot and they are supposed to be 20% more performant and 20% most fuel efficient ...problem is that their engineering has to be so precise they cannot be made in a foundry , only CNC machinery can make them so cost is stratospheric and not commercially viable yet .
@@kingk2405I would also add that propellers hot logs, Rocks and whales and get damaged or bent and can be repaired. Those new ones cannot. You bend it it's toast.
😂 I was interested in seeing how propellers are designed, build and installed with all the science and technology behind it … And I find myself watching 10mins of underwater cleaning 😂😂😂
Beautiful footage, too bad it doesn't always coincide with the dialogue. I'd think blades on variable pitch props could rotate 360 degrees (they can't) if I hadn't worked on them.
While working at Pier 71 in Seattle, I watched a giant bronze ship propeller come to life. The whole process took three months. Pour day day was quite exciting. That’s a lot of molten metal. It took weeks to cool.
Worked for LIPS in Brazil and that time we did a giant one made by CuNiAl!!! Great Time!!!! 55Tons ready to use!!! That time the polish and the machine the blades was by hand. Holes defines the thickness and machining til the holes vanishes. Was incredible, even a 55Ton propeller!!!! 70's
New phobia unlocked... Fear of a rotating ship's propeller... You couldn't pay me enough to be near that thing... The little one is bad, but the BIG one?? Nope... Of course it would be stopped, but if/when it starts... Excuse me while I put on my brown pants... How far does the push/pull of the water reach? I'll make sure to stay ten times that far away... Better yet... I'll say on the dock...
@@daytona1073 If you are a good swimmer and know what a lock-out/tag-out is, you would settle for the usual 100+ dollar an hour divers get. (I do understand tight spaces though)
01:02 - _"When revered, he propeller pulls water toward it, allowing shops to move backward as well"._ Except the ship moving backward in this scene isn't being moved by its propeller, which can as be seen, isn't turning. But that's nitpicking. Good video.
Not really. Art prioritises form over function. This is engineering, which prioritises function over form. Any aesthetical reward you derive from it is purely coincidental.
My old boss worked in a foundry in Serbia. One of the things they made were ship propellers. They were sand castings. It was a one shot deal. If you screwed it up, you had to start all over again.
Bonjour Génial j'ai fait du taillage de pignons de couronnes pignons arbre mais pas de cette taille là Impressionnant Merci pour cette vidéo Un français k
Those ship propellers are not brass, which is an alloy of copper and zinc. Modern water propellers are made of aluminum bronze with a little nickel added. This is an exceedingly tough and wear resistant metal.
You completely skipped the most crucial part of propeller manufacturing: Balancing and Surfacing, which is done by super rare experts and can significantly change a propeller's efficiency.
@constantinous shinas: Efficiency my fundament. As a kid, we did model airplanes with .049 CID engines that ran on what looked like lighter fluid mixed with oil, much like chain saw engines running premix. If the propellers weren't balanced, the planes would be shaken apart and "efficiency" would be a moot point. If something as big as these propellers were out of balance, it would tear up the prop shaft bearings in a hurry and efficiency would be an afterthought. The model airplane props would do 30,000 RPM. I have no idea how fast these giant ship propellers turn, but even at 200 RPM, the stern of the ship would shake violently if the sumbitch was out of balance. I imagine that polishing would make a smoother surface for passing through water and make it harder for barnacles to remain stuck on.
I thought we would see some super huge CNC's milling the props! Basically skipped that part. Most large ships use electric motors to power the propellers like in those azimuth thrusters. Kind of strange they didn't talk about that at all...otherwise very interesting video.
Scary stuff being down next to those blades. A simple miscommunication can easily cause a life to be lost if those things start up while anyone is still underwater and close to them!
The big ship has very different systems of engine starting. And Mega size of diesel engine takes 6 hours at least to be warmed up before starting. Of course the order of engine starting is on the captain when 'stand by' for navigation after all ship hands are ready. It is totally different from simple cars or small boats.
Propellers work by creating a low pressure zone one side, pushing the ship forward. Just like a propeller on an air plane and also the same principle of the wing of an air plane.
Video này rất thú vị và hấp dẫn. Ý tưởng đề cập đến rất sáng tạo và giải thích rõ ràng. Nội dung được thể hiện rất tốt và gây ấn tượng mạnh. Tôi rất thích xem video này. 🌻🌹🐓
They are usually electric. Essentially, the engine onboard the ship powers a large generator which is used to power the thrusters, along with all the other electrical systems onboard.
This is so stupidly nontechnical it doesn't even frame the content within it correctly and uses hackney phrases like "liquid metal" rather than "molten metal", it just goes on and on with that rubbish, they don't even point out the fly-cutting etc.
Adhd is its best and purest form, my bane of the world one day i'll work to learn how to program and the next ill be a woodworker, next i'll try graphic design. This has and will always be a thing that we do and sadly it's one of my most favorite parts of my person getting excited for something new and trying it is so much fun, until it is not...
It surprises me that modern propellers aren’t ducted and I wonder if the looped propellors will ever go mainstream Also as far as I know cooling down of a cast metal isn’t called curing
propellers do not work by "pushing water" behind the ship. They are foils like a wing, or aircraft propeller. In cross section they are shaped the same. the curved surface like that of a wing creates a lower pressure on that surface, which in turn pulls the propeller along with whatever it is attached to.
Sure looked like they were putting together a large electric motor at the beginning of the video. Maybe people should pay attention instead immediately trying to find fault
I wonder if someone could operate a service that used a lock system to give a ship a quick float in hydrochloric acid or maybe an electrolytic procedure to knock off crud then re-plate with silver or something else anti-microbic... Interesting video!
@@KC-bu8qq Maybe some kind off double ended lock that has hydraulically actuated "hull profile following" gates with negative pressure on the acid volume to prevent acid leakage... could be a matter of a couple hours service like a drive thru car wash instead of weeks in dry dock... Dunno, just brainstorming...
@@KC-bu8qq Drydock is a major operation though right? I really don't know living in Montana.. But I've used electrolytic processes to knock crud off of engine parts and it's pretty amazing. it just sheds the grime and rust off. Would definitely need to be submerged for that (and probably in an acidic solution anyway to re-plate) but also the crazy amount of electricity flowing through the hull might cause other issues... I wonder if alternatively they could make a lock that functioned like an ultrasonic jewelry cleaner but on a huge scale...
Technology is crazy.. they used to have divers clean growth off the hull of a ship between dry docking periods. Now they have robots that clean the hull like a pool vacuum.. magnets hold it to the hull.. dry docking is expensive af.. seems overkill to spend that amount of money to just clean.
Instead of working with one giant propeller, work with 4 small propellers, Two in front and two in the back. The water entering the propeller has to be meshed out, so that marine mammals are not harmed. Hull can have double chambered feature without any protrusion to the side of the ship. So if outer hull is breached, ship can still function. Water can be filled into the hull to lower ships height if needed. It can also be used to simulate drowning or for war games when the outer hull is breached. Cargo ships can be made broader for more stability and passenger ships can remain tall because we need more ocean view.
Great videos, but you talk a lot of blather; for example 'tolerance to the smallest millimeter'. Clean up your blather, and it will make the videos far better.
@@kayakMike1000 what percentage of props are variable pitch? If it is less then 50% taking the time to find out if toroidal props are better then fixed props may be worthwhile. To be as complicated as possible could variable pitch props be toroidal shaped also?
So after casting, there isn't any temperature treatment? like putting it in giant oven, than cool down fast i thought cast iron is rigid and would need further treatment/smithing to make it durable
if that were in los Angeles guaranteed some guy off his face on glass would find some way to bring it to the recycle yard. they actually encourage that stuff here.
For those wondering, the golden looking metal is called Aluminium Bronze, it's currently the go to choice for its toughness, corrosion resistance, and ability to prevent much of the buildup that other materials can experience.
Has to protect against cavitation well I am sure too. Not sure what makes something good for that but do know it is important and why people are investing in those new propellers. Uh toroidal I believe they are called. (Also more efficient!)
And yet the finishing lure industry still uses brass, which will tarnish from the oil in your hand, or you can pay way more for gold plated
That earns a like
Yeasty buildup?!
@@dianapennepacker6854 prop design is also specific to the actual use case, so something like toroidal may or may not add value - ducting alone can reduce some issues of exposed tip designs, and some of the directional pods as shown are ducted. BUT, I would love to see a cargo ship study using toroidal optimized for speed and ocean use just the same.
I always found propellers really beautiful things . They have a sort of perfect shape .
@rickyanthonyyou can go near flower; but trying to do so near propeller and you are dead 💀
They are becoming even more beautiful with recent developments.
@@indridcold8433 Saw the one with each blade forming a sort of half mobius knot and they are supposed to be 20% more performant and 20% most fuel efficient ...problem is that their engineering has to be so precise they cannot be made in a foundry , only CNC machinery can make them so cost is stratospheric and not commercially viable yet .
@@kingk2405I would also add that propellers hot logs, Rocks and whales and get damaged or bent and can be repaired. Those new ones cannot. You bend it it's toast.
There are like the perfect contrary of an egg
😂 I was interested in seeing how propellers are designed, build and installed with all the science and technology behind it … And I find myself watching 10mins of underwater cleaning 😂😂😂
Beautiful footage, too bad it doesn't always coincide with the dialogue. I'd think blades on variable pitch props could rotate 360 degrees (they can't) if I hadn't worked on them.
Exactly - Retired trainer of ships officers here - My multiple te technical autisms are quite badly triggered!! 😂😂
While working at Pier 71 in Seattle, I watched a giant bronze ship propeller come to life. The whole process took three months. Pour day day was quite exciting. That’s a lot of molten metal. It took weeks to cool.
Worked for LIPS in Brazil and that time we did a giant one made by CuNiAl!!! Great Time!!!! 55Tons ready to use!!! That time the polish and the machine the blades was by hand. Holes defines the thickness and machining til the holes vanishes. Was incredible, even a 55Ton propeller!!!! 70's
What is that metal formula...is it Copper/Nickel/Aluminum? Why that particular alloy?
Mcc
Mmmmktg ml
Of m
Kkffffkf
@ 7:55 Sorry but a fouled prop will increase a ship's energy loss, not "reduce".
Came here to see if anyone else had noticed this. I mean, if a gunked-up prop will REDUCE energy losses then why bother cleaning it? Lol.
Very little on the actual manufacturing process. I expected a “how it’s made” type documentary.
That's one of the most fascinating things I've ever seen on video. A ship's propeller in motion under the water. And in such crystal clear water too.
New phobia unlocked... Fear of a rotating ship's propeller...
You couldn't pay me enough to be near that thing... The little one is bad, but the BIG one?? Nope...
Of course it would be stopped, but if/when it starts... Excuse me while I put on my brown pants...
How far does the push/pull of the water reach? I'll make sure to stay ten times that far away... Better yet... I'll say on the dock...
@@daytona1073 If you are a good swimmer and know what a lock-out/tag-out is, you would settle for the usual 100+ dollar an hour divers get. (I do understand tight spaces though)
@@daytona1073 You have achieved *Submechanophobia.* Congrats.
@@avgjoe-cz7cb Give me someone to watch my back for sharks and I'm 100% in.
@@daytona1073 Why fear of a propeller?
"Curing" is what happens when you have a chemical reaction like 2 part epoxy. Metal casting would be "cooling" ;)
01:02 - _"When revered, he propeller pulls water toward it, allowing shops to move backward as well"._
Except the ship moving backward in this scene isn't being moved by its propeller, which can as be seen, isn't turning.
But that's nitpicking. Good video.
Speaking of nitpicking, would you like to have another go at spelling “reversed”?
@@Lozzie74You may insert an _"s"_ where applicable.
@@Lozzie74 Also "he" and "shops" lol.
You are true artists from the casting to the finishing. Cheers to all who make it happen.
Not really. Art prioritises form over function. This is engineering, which prioritises function over form. Any aesthetical reward you derive from it is purely coincidental.
@@andoletube man you poo pooed on him
@@andoletube Yo am a philistine :-)
@@frankwolstencroft8731 If by philistine you mean "correct", then yes, I am. Thank-you.
@@travistucker7317 Had to be done. "True artists"...Please... Hyperbole, especially incorrect hyperbole, shouldn't go unpunished...
My old boss worked in a foundry in Serbia. One of the things they made were ship propellers. They were sand castings. It was a one shot deal. If you screwed it up, you had to start all over again.
How often would screw-ups happen while casting
@@dohmies77 once a year, he said
Good job‼
Bonjour
Génial j'ai fait du taillage de pignons de couronnes pignons arbre mais pas de cette taille là
Impressionnant
Merci pour cette vidéo
Un français k
Excellent work 👍
12:43 Reminds me of when I built an old 426 Hemi.
Greetings from the BIG SKY. Big brass propellers!
Those ship propellers are not brass, which is an alloy of copper and zinc.
Modern water propellers are made of aluminum bronze with a little nickel added. This is an exceedingly tough and wear resistant metal.
You completely skipped the most crucial part of propeller manufacturing: Balancing and Surfacing, which is done by super rare experts and can significantly change a propeller's efficiency.
yes a very incoherent clip with strange manufacturing highlights and missing some essential ones.
@constantinous shinas:
Efficiency my fundament. As a kid, we did model airplanes with .049 CID engines that ran on what looked like lighter fluid mixed with oil, much like chain saw engines running premix. If the propellers weren't balanced, the planes would be shaken apart and "efficiency" would be a moot point.
If something as big as these propellers were out of balance, it would tear up the prop shaft bearings in a hurry and efficiency would be an afterthought.
The model airplane props would do 30,000 RPM. I have no idea how fast these giant ship propellers turn, but even at 200 RPM, the stern of the ship would shake violently if the sumbitch was out of balance.
I imagine that polishing would make a smoother surface for passing through water and make it harder for barnacles to remain stuck on.
Excellent, Thank you👍
Very interesting! Good job.
cool video's.......at the 12:15 it looks like somebody forgot a wrench in the block, while hoisting it....
Thank you for sharing the useful video.
I watched and get much information.
Thank you.
Have a nice day!!
very interesting content
Yes.
It must be fun to drive the underwater hull Zamboni!
What's intersting to me is how even the largest propellers is dwarfed by the shipt they are on, yet they can still move the ship with ease.
8:00 'just as a fouled propellor can reduce energy loss'... this should be 'increase energy loss, right?
3:38 'rotated on their horizontal axis.' Lol no. ALL propellers rotate on a horizontal axis, thruster rotate additionally on a vertical axis.
😀👍🏿Good Stuff
👍
Amazing 👍
I thought we would see some super huge CNC's milling the props! Basically skipped that part. Most large ships use electric motors to power the propellers like in those azimuth thrusters. Kind of strange they didn't talk about that at all...otherwise very interesting video.
Lots of proprietary info protected from view.
Yeah i thought that looked like a huge electric motor but the dude never mentioned it.
YOU CAN'T HANDLE THE TRUTH !!
@@peterdarr383 sHAk
@@peterdarr383 sHAk
I always wondered how the propellers were made. And finally I have found the right video regarding it.
Um trabalho e tanto num dos maiores transportes do mundo .
Cool. Thanks for sharing.
Intersting... Good Job...shop and ships
Scary stuff being down next to those blades. A simple miscommunication can easily cause a life to be lost if those things start up while anyone is still underwater and close to them!
That's what Lock out-Tag out is for.
And safety work permits
@@thebogsofmordor7356; ;b
"Don't go until I say all clear"
"You said ALL CLEAR?"
"no - i DIDN'T say "ALL CLEAR" . . . etc
The big ship has very different systems of engine starting.
And Mega size of diesel engine takes 6 hours at least to be warmed up before starting.
Of course the order of engine starting is on the captain when 'stand by' for navigation after all ship hands are ready.
It is totally different from simple cars or small boats.
12:44 that is a laaaaaarge piece of steel. WOW
日本語字幕があると思いました！😂
素晴らしい動画ですね！
Propellers work by creating a low pressure zone one side, pushing the ship forward. Just like a propeller on an air plane and also the same principle of the wing of an air plane.
Faster moving air is over a wing create lift by lowering the pressure, propellers propel by creating thrust, not the same thing.
@@jakesmith6337 And thrust is created how? Oh, by creating a low pressure differential in front of the propeller...
@@jakesmith6337 same principal different name due to directionality 😄
Video này rất thú vị và hấp dẫn. Ý tưởng đề cập đến rất sáng tạo và giải thích rõ ràng. Nội dung được thể hiện rất tốt và gây ấn tượng mạnh. Tôi rất thích xem video này.
🌻🌹🐓
The propeller, designed by Brunel, on the SS Great Britain, was only 5% less efficient than these.....
Will toroidal propellers be made/used in the future?
4:29 looks a lot like the hull of SS Enterprise!!!!
Are there any videos on how they used to make big propellers before computers and multi axis machines?
😮 Advanced Propeller!
Camila is breathing fire 💥
She must be in love with her coach❤
She is focused and resolved. Such a treat to see her like this
🤩🤪😘
Any idea what the cost of the finished and fully assembled propeller could be ?
$800,000
If you have to ask, you can't afford it!
Ovisi o velićini propelera kao i broju pera 4-6,dali je kut pera promjeniv,dali su pera zamjenjiva ili je cijeli propeler u jednom komadu,
I'd pop a guess at 200k for material ,and 500 k for the machine work.. Roughly 700k.
I would guess at $250,000
Sure hope there are some serious LOTO procedures for the guys doing the defouling.
Thanks for this fascinating overview of ship propulsion systems. How is power delivered to propellers in thruster pods?
Think personal watercraft, AKA "Jet Ski"?
They are usually electric. Essentially, the engine onboard the ship powers a large generator which is used to power the thrusters, along with all the other electrical systems onboard.
This is so stupidly nontechnical it doesn't even frame the content within it correctly and uses hackney phrases like "liquid metal" rather than "molten metal", it just goes on and on with that rubbish, they don't even point out the fly-cutting etc.
@@CanonFirefly no, most large cargo ships are direct shaft drive...
@@skippyguy3 I meant most thruster pods not most cargo ships
Good 👍👍
In my very recent issue of 'Foundry', received a few days ago...record non-ferrous casting..112 TONS of brass propellor...
Wow! That is amazing. As a machinist I really enjoy learning about other industry.
Thank You
Tesekkurler
Adhd is its best and purest form, my bane of the world one day i'll work to learn how to program and the next ill be a woodworker, next i'll try graphic design. This has and will always be a thing that we do and sadly it's one of my most favorite parts of my person getting excited for something new and trying it is so much fun, until it is not...
For anyone wondering, the music @4:35 is "Pinnacle of Success" by Airae.
That's pretty cool stuff to know that I had no idea about. Learn something new everyday!
Thanks to technology very interesting program 👍
It surprises me that modern propellers aren’t ducted and I wonder if the looped propellors will ever go mainstream
Also as far as I know cooling down of a cast metal isn’t called curing
Yeah..after casting...it's 'cooling'...curing is a different process.
Surprisingly they do 'cure' long after having cooled down. The molecular structure changes over weeks and months in a process referred to as aging.
Yes, looped props are much better. And way way way more expensive.
Cool video, glad it showed up in suggested.
Thank you for information ?
cara sama proses sama gaksih...,, 🤣judulnya gokill...🤣
Do these 'thrusters' (4:30) each have an engine or do they connect to something like a drive shaft and I didn't see it?
This knowledge was tasty for the mind once again.
wow very nice video
감사드립니다.
The bigger, the more fascinating
Interesting stuff thanks
propellers do not work by "pushing water" behind the ship. They are foils like a wing, or aircraft propeller. In cross section they are shaped the same. the curved surface like that of a wing creates a lower pressure on that surface, which in turn pulls the propeller along with whatever it is attached to.
They do not have an airfoil cross section, thrust comes from the angle of attack…….
Sure looked like they were putting together a large electric motor at the beginning of the video. Maybe people should pay attention instead immediately trying to find fault
Cool video!
It will be interesting to see this new more efficent propeller design make it's was into tge largest ships.
I wonder if someone could operate a service that used a lock system to give a ship a quick float in hydrochloric acid or maybe an electrolytic procedure to knock off crud then re-plate with silver or something else anti-microbic... Interesting video!
Dry docking and then filling it up with acid?
@@KC-bu8qq Maybe some kind off double ended lock that has hydraulically actuated "hull profile following" gates with negative pressure on the acid volume to prevent acid leakage... could be a matter of a couple hours service like a drive thru car wash instead of weeks in dry dock... Dunno, just brainstorming...
@@ryanjohnson3615 It’s an interesting concept, but i assume there are easier ways to clean in dry dock. You could hose it with the same acid
@@KC-bu8qq Drydock is a major operation though right? I really don't know living in Montana.. But I've used electrolytic processes to knock crud off of engine parts and it's pretty amazing. it just sheds the grime and rust off. Would definitely need to be submerged for that (and probably in an acidic solution anyway to re-plate) but also the crazy amount of electricity flowing through the hull might cause other issues... I wonder if alternatively they could make a lock that functioned like an ultrasonic jewelry cleaner but on a huge scale...
Technology is crazy.. they used to have divers clean growth off the hull of a ship between dry docking periods. Now they have robots that clean the hull like a pool vacuum.. magnets hold it to the hull.. dry docking is expensive af.. seems overkill to spend that amount of money to just clean.
Instead of working with one giant propeller, work with 4 small propellers, Two in front and two in the back. The water entering the propeller has to be meshed out, so that marine mammals are not harmed. Hull can have double chambered feature without any protrusion to the side of the ship. So if outer hull is breached, ship can still function. Water can be filled into the hull to lower ships height if needed. It can also be used to simulate drowning or for war games when the outer hull is breached. Cargo ships can be made broader for more stability and passenger ships can remain tall because we need more ocean view.
this was interesting...
Precision IS The KEY........
If not for the incorrect descriptions of several things, this might have been an enjoyable video.
Totally skipped the major part of balancing these before they're mounted.
What about the Marine animals that get blended up?
What about the small animals you drive above that get smashed?
It is called, "chum"
What an unstructured video. It just jumps back and forth between things
Another cool invention from the good old Sweden :)
In Italia, a Livorno, c'era la LIPS ITALIANA dove si costruivano eliche fisse ed a passo variabile fino a 60 tonnellate ! Ci ho lavorato 30 anni !!!!
프로펠러 안에는 철로 만들고, 외부는 0.5cm 두께로 황동으로 만들면
가격이 싸 질건데.. 황동 때문에 따개비도 막을수 있고...
Вот бы такие станочки в мастерскую, да мастерскую под эти станочки...
Amazing
Am I the only one who has a phobia of giant ship propellers?? Especially underwater
There are at least two of us. Those things give me the shits.
Props to you
Not a whole lot on "What it Takes to Manufacture Million $ Propellers..."
This Pitch Control Mechanism is required in all ship I think 👍
Great videos, but you talk a lot of blather; for example 'tolerance to the smallest millimeter'. Clean up your blather, and it will make the videos far better.
Coloquem opção de legenda em português 🇧🇷👍🏾
Aprenda inglês.
Ta bom!
Hint: 3D printing blades in metal. Skip molding.
Has anyone done 3D models about Toroidal propellers for full size ships?
Might be complicated when considering variable pitched props.
@@kayakMike1000 what percentage of props are variable pitch? If it is less then 50% taking the time to find out if toroidal props are better then fixed props may be worthwhile. To be as complicated as possible could variable pitch props be toroidal shaped also?
Toridol is for pain
❤❤❤
THE PROPELLERS ON THE TITANIC WERE HUGE AND WEIGHED 38 TONS EACH 🚢
WoW very very nice
So after casting, there isn't any temperature treatment?
like putting it in giant oven, than cool down fast
i thought cast iron is rigid and would need further treatment/smithing to make it durable
Those blades weren't iron.
top demais ...................
Plane great history
Wait a minute... 0:32 what is the ship from the Madagascar movie doing on here 😂
if that were in los Angeles guaranteed some guy off his face on glass would find some way to bring it to the recycle yard. they actually encourage that stuff here.