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"It is the combination of all these experiments performed on scale models that gives designers and shipbuilders the confidence that once the full scale ship hits the water for the first time it will hopefully perform as expected" *shows a video of an LCS being launched* I see what you did there.
I can't speak for ship builders but in software projects it is usually the customers and project managers who want to live in the fantasy world where they pretend everything is better than it actually is despite the protests of the software engineers and designers and similar people doing the actual work.
The two LCS designs had completely different problems - one had a catastrophically faulty gearbox and the other had a too thin hull plate at the hull midline that fractured. Neither was easily detected at model scale (because the ship models aren’t powered and the hull stress was under estimated. The fact that the LCS ships were actually too small for the way the U.S. Navy actually used them isn’t something a model can tell you.
I work at the Utah Water Research Laboratory and we often make models of dams (such as the Oroville Dam spillway that failed in 2017, before I started working there), canals, gates, and other water structures, and we use the Froude number in our models. We definitely also have number crunching that happens that accounts for a whole host of things that happen, and being able to have the video recording is very helpful. Basically, we make models so that clients can make informed decisions. Our work can help them save a lot, by spending 5 on a new model saving 85 that would have been spent making the full scale cause the alternate design is way better than the original idea
We have indoor pools where it is possible to simulate winter conditions with real ice crust in Finland. So the whole building is basically a huge freezer.
"Do NOT share publicly - Indoors ocean - Cook Unity (high quality video)" That's how the title of this video is translated in Portuguese Who the hell did this XD
@@felipeaugusto2600 I have seen this kind of problem before. The video is often approved for official use only and then has to be reapproved for unlimited release. Since the text was in Portugese, the person preparing the final video for public release didn't realize that the text hadn't been changed, It could have been that they were supposed to use the low quality which was already approved. It was also possible that that the resolution was reduced sufficiently during preparation that it was converted to a resolution low enough to allow unrestricted release. I also suspect that it wasn't serious but that a number of memos and ribbing went around telling people to verify the correct resolution in the future. If the facility manager was feeling like leaving an impact, it might have been placed on the wall with a big sign that he will not be amused if it happens again.
I grew up near Southampton and the river Hamble. A lot of maritime proficiency examination takes place in the region including piloting great cargo ships and tankers. On a lake at Warsash (famous for its D-Day role) student pilots sit cramped into miniature model tankers and learn manoeuvring skills. Almost like kids in pedal cars. It’s now run by Solent University. I guess they use simulators now rather than analogue model boats. At the time it was called Warsash Maritime Academy.
Always brilliant explanation and lead into the next segment. When you think you already know about a subject, these videos constantly give details you didn't. The tag line applies to every release. Keep up the great work!!
Spent time at the David Taylor towing tank in Bethesda, MD and the towing tank on the Isle of Wight in the UK. Not only ship models are tested. Did the ditching model tests for aircraft, such as the V-22 Osprey Tiltrotor. Well done video, especially the explanation of the Froude number.
If you haven't yet, I recommend a video on the landing systems on an aircraft carrier. Aircraft carriers' in general are pretty amazing feats of engineering.
Self propulsion tests rarely have the model propel itself fully and are most commonly used to verify the propulsion method (propeller pitch angle and rpm for example) There are multipliers calculated to find out to what degree a given model propels itself for a given propulsor, speed and scale. The carriage then still pushes on the model. Latest test we ran the model produced about 50% of it's own propulsion.
0:23 LOL that's not a boat design, no need to fire the designer. That's most likely a sensor that tests resonance frequency in the pitch direction of a generic planing hull.
Can we acknowledge the late Stephen Salter who invented the concept and designed the first wide wave tank with many wave-making paddles that can replicate any sea state.
Um actually, you're supposed to use "Um actually" when making this type of joke comment. And I have been waiting years to use that joke. Thank you so much for the setup! Sincerely.
This was an absolutely _fascinating_ watch. I'd hate to see what I looked like while observing this video, with my slack-jawed, eye-popping vacant expression. One of the best ever.
I am a "sea trial" captain for an international seafreight company, I'd like to say thank you for making this video! Not enough information out there on what we do.
There is still a preserved hull testing in Dumbarton, Scotland. It was hired by Cunard to help design the hull of Queen Mary 2 as no other facilities where available at time. It is called the Denny tank museum.
Science teachers and students. My Admin used to give me the science equipment catalogues so I could see all the things he would never allow us to buy. They had a square 'wave tank' less than a meter on each side and about 20 cm deep. $2200. Using old plywood I made a long narrow box. Two tricks made it work. I lined it with 5 mill construction plastic - this made it water proof. (just draped it, a few spring clips.) Simple. The second trick was at one end I made a long sloped wedge, 'the beach'. This was under the plastic. Works great. The beach does a couple of things. It absorbs the waves so the tank just doesn't become a sloshing mess. To make surface waves (most common) just move the top few cms of water at the other end of tank. To make deep tsunami waves just lift the plastic up a bit, so the bottom comes up, at that end. Richard Feynman said that using water waves to model electromagnetic waves doesn't work because water waves are every bit as complex as EM Radiation. True. However, you can see water moving. So a wave tank can do a lot of what the big tank in the video can do. What's neat is the tsunami waves are little ripples until they reach the beach, then they slow down, pile up and can splash right out the other end of the flume. Surface waves are bigger, noticeably slower. They run up the beach and lose their energy. The last tank I made was about 30cm deep, 7 meters long and about 50cm wide. Students actually had crested waves breaking on the beach. Hamsters could've surfed them. The tsunamis? They moved quicker, but were small until they climbed up the beach and blasted over the side (into the school garden.) That admin there wasn't as bad as the first guy. She came out glanced at the tank and said, "Don't make too much noise." The physics teacher at that school never even looked at it. What would make a fun naval engineering project would be to figure out how each century would've redesigned their ships if they'd used a wave tank. The 14th through mid 19th century ships would all quickly look very different. The one craft that I don't think would've changed? The Aleut Iqyax (aka baidarka). If you look at the stringers on the bottom, there's a big gap between the keelson and the first stringers. This channels the water giving the iqyax lift right where the paddler sits. I built an iqyax to do attempt this, but along the way I realized to get the 10 knots Captain Cook's navigator reported, I'd have to be able to paddle at least 6 to 8 knots. I was good able to sustain 4.3 knots, but not even close.
When I was younger i worked at a place that had a contract with Carderock, just off the beltway in MD, coming from VA. It’s a facility where they test subs, ships and aircraft in water.
I've been inside the office side a few times. 3 ft thick walls with ship type bulkhead doors in places. Guards every few doors or so. Signs on the wall reminding workers of Safe / Vault Protocols during the day -- end of work day. No workers of any type that are not US citizens allowed on site -- at least in operational areas. It's some serious Sh*t -- like what you might see in the movies.
@vibratingstring I've come across the veritasium one before and I've seen it mentioned in docs. I was just thinking for a moment maybe you knew of a whole series about it. I'd watch that! Thanks either way. 🙏
Thank you for this informative video. It provided valuable insights that I needed to understand. I am currently in the process of designing my own personal aluminum fishing Alia craft catamaran and this will help me better comprehend the use of software to analyze boat performance. Very helpful content brother
Very cool to learn about this amazing test facility. too bad its not practical to make one of these for every town and city :) swim time. But it really is cool to test the physics of wave model, great people who came up with this plan and helped to build and run this over the years, probably saved a lot of lives and a lot of money.
I would like to see a video on the history of the Naval Undersea Warfare Center in Walker Lake, near Hawthorne Nevada. Other than it existing, not much seems to be publicly known.
David Taylor model basin, I have a place about 3 minutes from it.. was always interested on what it was, as they have Anti air missiles & an insane amount of security around the facility.., I’ve been driving by it since 2004, especially when it was under construction.. very interesting, it’s about 15 minutes away from DC as well.. right off the Potomac River
@vibratingstring how much horsepower does a cv with that much tonnate need to go faster then this? Go ahead do the math and tell me it's not behaving like a wall.
Genuinely curious now! Do you think the navy’s official kts for CVs are overstated? Or is it possible that the instruments are subject to minute external influences? Not too savvy on the subject so id appreciate the insight! Thanks
What is the formula for reducing mass on the model then? Say you had a 1:50 model, if you reduced it's weight down there must be a formula because you can't reduce down the density of water or the gravity.
@vibratingstring awesome thank you. I modelled a skin-on-frame kayak, as I designed it with the least amount of buoyancy. It glided really well across the pond. Then I started to add the mass of myself at the scale used for the dimensions and it didn't sit right compared to what the software said it would.
The three hundred something containers in the water was investigated because it was so many at once. Ships do typically lose a few on there travels though and if you didn't know, there are a shit ton of containers in the ocean. A lot of which float right beneath the surface of the water.
The problem is: you can make a smaller scale model of an object, but you can not shrink the water molecules accordingly. I'm not sure how accurate to the real thing the effects on the scale model are...
Nothing can replace actual hands on trial and error. I wanna play with boats in a big bathtub all day. And get paid for it. 😂😂😂😂😂😂 Honestly though it looks like a fun fulfilling job.
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@@briankruger3009 shut up geek!
They only ship within the United States: Every Canadian would be surprised otherwise.
"the issue is, whoever came up with this design. the solution is to replace that person." Im dead. lmfao
I heard that and was like "bru" that's not how it works
and the thing he was talking about was a pitch resonance jig, not a boat design.
Tell that to the guy behind the littoral combat ship.
lol he just said that and kept on going.
😂😂😂
Every kids dream pool for their RC boats.
Dream pool just to swim in it lol.
Just need a better ceiling lol
Kids???? Plenty of grown men as well...lol.
Kids? 😅I just turned 31 last week and I can't think of anything better & that I cannot get into
@@Sabotage_Labs it can't be that expensive to DiY this... for my.. uh... kids that i dont have...
"It is the combination of all these experiments performed on scale models that gives designers and shipbuilders the confidence that once the full scale ship hits the water for the first time it will hopefully perform as expected"
*shows a video of an LCS being launched*
I see what you did there.
I can't speak for ship builders but in software projects it is usually the customers and project managers who want to live in the fantasy world where they pretend everything is better than it actually is despite the protests of the software engineers and designers and similar people doing the actual work.
I think the LCS's problem was material used not hull shape.
@@GamerbyDesign I know, I know. I just think it was fun (and probably on purpose).
The two LCS designs had completely different problems - one had a catastrophically faulty gearbox and the other had a too thin hull plate at the hull midline that fractured. Neither was easily detected at model scale (because the ship models aren’t powered and the hull stress was under estimated. The fact that the LCS ships were actually too small for the way the U.S. Navy actually used them isn’t something a model can tell you.
I work at the Utah Water Research Laboratory and we often make models of dams (such as the Oroville Dam spillway that failed in 2017, before I started working there), canals, gates, and other water structures, and we use the Froude number in our models. We definitely also have number crunching that happens that accounts for a whole host of things that happen, and being able to have the video recording is very helpful. Basically, we make models so that clients can make informed decisions. Our work can help them save a lot, by spending 5 on a new model saving 85 that would have been spent making the full scale cause the alternate design is way better than the original idea
This is one of the most fascinating NWYT ever!
I share that opinion
Ending with the LCS was a great touch
We have indoor pools where it is possible to simulate winter conditions with real ice crust in Finland. So the whole building is basically a huge freezer.
"Do NOT share publicly - Indoors ocean - Cook Unity (high quality video)"
That's how the title of this video is translated in Portuguese
Who the hell did this XD
I guess they fixed it, for me it says.
"Por que a Marinha dos Estados Unidos teve que construir um oceano interno"
@@felipeaugusto2600 I have seen this kind of problem before. The video is often approved for official use only and then has to be reapproved for unlimited release. Since the text was in Portugese, the person preparing the final video for public release didn't realize that the text hadn't been changed, It could have been that they were supposed to use the low quality which was already approved. It was also possible that that the resolution was reduced sufficiently during preparation that it was converted to a resolution low enough to allow unrestricted release. I also suspect that it wasn't serious but that a number of memos and ribbing went around telling people to verify the correct resolution in the future. If the facility manager was feeling like leaving an impact, it might have been placed on the wall with a big sign that he will not be amused if it happens again.
I have been inside this facility and it is incredible
I grew up near Southampton and the river Hamble. A lot of maritime proficiency examination takes place in the region including piloting great cargo ships and tankers. On a lake at Warsash (famous for its D-Day role) student pilots sit cramped into miniature model tankers and learn manoeuvring skills. Almost like kids in pedal cars. It’s now run by Solent University. I guess they use simulators now rather than analogue model boats. At the time it was called Warsash Maritime Academy.
Always brilliant explanation and lead into the next segment. When you think you already know about a subject, these videos constantly give details you didn't. The tag line applies to every release. Keep up the great work!!
Spent time at the David Taylor towing tank in Bethesda, MD and the towing tank on the Isle of Wight in the UK. Not only ship models are tested. Did the ditching model tests for aircraft, such as the V-22 Osprey Tiltrotor.
Well done video, especially the explanation of the Froude number.
As an armchair designer and engineer, I really enjoyed this episode. More like this, please!
Title : USA largest indoor ocean
Me: so that’s a large swimming pool right?
How many Olympic washing machines?
If you haven't yet, I recommend a video on the landing systems on an aircraft carrier. Aircraft carriers' in general are pretty amazing feats of engineering.
Thank you, its about Froude number and Reynolds number.
Self propulsion tests rarely have the model propel itself fully and are most commonly used to verify the propulsion method (propeller pitch angle and rpm for example)
There are multipliers calculated to find out to what degree a given model propels itself for a given propulsor, speed and scale. The carriage then still pushes on the model. Latest test we ran the model produced about 50% of it's own propulsion.
0:23 LOL that's not a boat design, no need to fire the designer. That's most likely a sensor that tests resonance frequency in the pitch direction of a generic planing hull.
We meant it as a joke! But that is actually showing the porpoising of a planing hull: ua-cam.com/video/S_bv9wsUijw/v-deo.htmlfeature=shared
Just like indoor dining… smooth transition
Can we acknowledge the late Stephen Salter who invented the concept and designed the first wide wave tank with many wave-making paddles that can replicate any sea state.
I'll bet that Froude really knew where his towel was.
Awesome installation, and great video, but eh:
2:04 "instead of sound, they produce waves."
Yeah, sound _is_ waves mate! 😝
Correct, but you know what we meant 😉
I thought the same thing but gave it a pass.
Not gonna lie I was thinking the same thing.
Well yeah, but yeah...
Um actually, you're supposed to use "Um actually" when making this type of joke comment.
And I have been waiting years to use that joke. Thank you so much for the setup! Sincerely.
This was an absolutely _fascinating_ watch. I'd hate to see what I looked like while observing this video, with my slack-jawed, eye-popping vacant expression. One of the best ever.
Very cool! excellent episode
I am a "sea trial" captain for an international seafreight company, I'd like to say thank you for making this video! Not enough information out there on what we do.
There is still a preserved hull testing in Dumbarton, Scotland. It was hired by Cunard to help design the hull of Queen Mary 2 as no other facilities where available at time. It is called the Denny tank museum.
Great place to visit!
Well done !! Very informative- could have watched for another 20 minutes
I love these types of videos, they’re always so fascinating and your voice is my favorite of all the voice over voices!
very informative, thank you! subbed
Absolutely fascinating, thank you.
this made my day far better. thank you
11:41 “NO SMOKING” in huge letters on the bridge tower 😂 guess there were some discipline problems with the crew haha
This is one of the most interesting videos (and channels) I have seen in a while!
How the panels transition, but remain watertight is amazing. I must know more!
Science teachers and students. My Admin used to give me the science equipment catalogues so I could see all the things he would never allow us to buy. They had a square 'wave tank' less than a meter on each side and about 20 cm deep. $2200. Using old plywood I made a long narrow box. Two tricks made it work. I lined it with 5 mill construction plastic - this made it water proof. (just draped it, a few spring clips.) Simple. The second trick was at one end I made a long sloped wedge, 'the beach'. This was under the plastic. Works great. The beach does a couple of things. It absorbs the waves so the tank just doesn't become a sloshing mess. To make surface waves (most common) just move the top few cms of water at the other end of tank. To make deep tsunami waves just lift the plastic up a bit, so the bottom comes up, at that end.
Richard Feynman said that using water waves to model electromagnetic waves doesn't work because water waves are every bit as complex as EM Radiation. True. However, you can see water moving. So a wave tank can do a lot of what the big tank in the video can do.
What's neat is the tsunami waves are little ripples until they reach the beach, then they slow down, pile up and can splash right out the other end of the flume. Surface waves are bigger, noticeably slower. They run up the beach and lose their energy.
The last tank I made was about 30cm deep, 7 meters long and about 50cm wide. Students actually had crested waves breaking on the beach. Hamsters could've surfed them. The tsunamis? They moved quicker, but were small until they climbed up the beach and blasted over the side (into the school garden.)
That admin there wasn't as bad as the first guy. She came out glanced at the tank and said, "Don't make too much noise." The physics teacher at that school never even looked at it.
What would make a fun naval engineering project would be to figure out how each century would've redesigned their ships if they'd used a wave tank. The 14th through mid 19th century ships would all quickly look very different. The one craft that I don't think would've changed? The Aleut Iqyax (aka baidarka). If you look at the stringers on the bottom, there's a big gap between the keelson and the first stringers. This channels the water giving the iqyax lift right where the paddler sits. I built an iqyax to do attempt this, but along the way I realized to get the 10 knots Captain Cook's navigator reported, I'd have to be able to paddle at least 6 to 8 knots. I was good able to sustain 4.3 knots, but not even close.
When I was younger i worked at a place that had a contract with Carderock, just off the beltway in MD, coming from VA. It’s a facility where they test subs, ships and aircraft in water.
Here from the short. Much love NWYT
Very informative. Thank you
Great job with this! Thanks!
This facility is awesome.
You can’t swim, but you can canoe it.
What are the Public Swimming hours, and do they put in lane markers?
Fascinating! I served on the USS Enterprise CVN-65 for 3 years. Would be cool to see those films from the late 50s. Gonna research it. Thanks. Subbed.
That was fantastic!
Fantastic video!
7:37 that was confusing to use the term "footage" or "photage" when talking formula and ship sizes
I’m a simple man. I see Carderock, I upvote
I was wondering if this was the place along the Potomac in MD
@@Adamroable David Taylor Model Basin. I worked down the road at the Army Map Service, a friend worked at the Model Basin.
I've been inside the office side a few times. 3 ft thick walls with ship type bulkhead doors in places. Guards every few doors or so. Signs on the wall reminding workers of Safe / Vault Protocols during the day -- end of work day. No workers of any type that are not US citizens allowed on site -- at least in operational areas. It's some serious Sh*t -- like what you might see in the movies.
Wow! Wind tunnel but for water! Just wow!
Give this man those 3M followers
The ocean doesnt scare me nearly as much as a giant indoor pool does
Wow someone's whole job is probably to make the coolest model boats of all time. Nice. 🤙
@vibratingstring oh, which channel? I collect those kinds of channels
@vibratingstring I've come across the veritasium one before and I've seen it mentioned in docs. I was just thinking for a moment maybe you knew of a whole series about it. I'd watch that! Thanks either way. 🙏
I drive past it all the time. Such an Impressive facility at Carderock.
1:32 Ah my favorite place -Masb- Mask
Sound is a wave, and music is what you get when waves make patterns. (Piano keys)
Fascinating. Thanks!
Thank you for this informative video. It provided valuable insights that I needed to understand. I am currently in the process of designing my own personal aluminum fishing Alia craft catamaran and this will help me better comprehend the use of software to analyze boat performance. Very helpful content brother
Very cool thanks for the video..
Very cool to learn about this amazing test facility.
too bad its not practical to make one of these for every town and city :)
swim time.
But it really is cool to test the physics of wave model, great people who came up with this plan and helped to build and run this over the years, probably saved a lot of lives and a lot of money.
One of these days, it WILL be what I think!!
I would like to see a video on the history of the Naval Undersea Warfare Center in Walker Lake, near Hawthorne Nevada. Other than it existing, not much seems to be publicly known.
David Taylor model basin, I have a place about 3 minutes from it.. was always interested on what it was, as they have Anti air missiles & an insane amount of security around the facility..,
I’ve been driving by it since 2004, especially when it was under construction.. very interesting, it’s about 15 minutes away from DC as well.. right off the Potomac River
Incredible.
Is it just me or do i want to swim in it really bad? 😂
Hands down we have one of the flyest submarines in the world to date I promise . No joke big rank .
This video was so cool!!!!
Since you finally researched about the froude number you should know now why a carrier cannot go faster then 30~35kts.
I have seen them go much faster than that
@@extremechimpout liar
@vibratingstring how much horsepower does a cv with that much tonnate need to go faster then this? Go ahead do the math and tell me it's not behaving like a wall.
Well we were doing 36 knots and they left us like we were standing still so I don't know where you got that idea.
Genuinely curious now! Do you think the navy’s official kts for CVs are overstated? Or is it possible that the instruments are subject to minute external influences? Not too savvy on the subject so id appreciate the insight! Thanks
What a cool video!
You crack me up man 😂
Yooooo never knew this channel had full videos? I always thought they only made shorts.
We have tons of long videos. Check them out!
@@NotWhatYouThink I will, thank you.
2:10 Uhh…. Akshually, piano keys also produce waves because sounds just are waves 🤓
What is the formula for reducing mass on the model then? Say you had a 1:50 model, if you reduced it's weight down there must be a formula because you can't reduce down the density of water or the gravity.
@vibratingstring awesome thank you. I modelled a skin-on-frame kayak, as I designed it with the least amount of buoyancy. It glided really well across the pond. Then I started to add the mass of myself at the scale used for the dimensions and it didn't sit right compared to what the software said it would.
I used to beg my parents to make a huge indoor operatable pool, ive ever got on my knees just for that xD
I’ve actually been there on Navy business. It’s a very impressive. “lake”.
First time commenting, truly enjoy your subject matter & scope. 20 yr. + Mil. Vet
If I ever get filthy rich I'm building a smaller version of that. I'm going to have the best pool in the neighborhood 😂😂😂
I can't swim in it?
Aww man, there goes my weekend plans :(
We could so many activities in a place like that.
0:58 Mr Lahey!
Mr. Jim Lahey?
The three hundred something containers in the water was investigated because it was so many at once. Ships do typically lose a few on there travels though and if you didn't know, there are a shit ton of containers in the ocean. A lot of which float right beneath the surface of the water.
That is pretty darn cool! And wise!
I'm just here for the cool little boats in the pool. The rest of it sounds very mathy.
2:16 - Except a sound wave!
Which is probably why at 2:08, don't know piano keys do create waves! Sound waves!
The problem is: you can make a smaller scale model of an object, but you can not shrink the water molecules accordingly. I'm not sure how accurate to the real thing the effects on the scale model are...
This would be my dream to have when i was younger
It's a same idea with airforce's wind tunnel, right ?
Nowadays you can do the same thing done here on your cell phone.
Cool, interesting video!
military grade water park, i would dive in there, soooo much fun it would be
A lot of footage from Marin, the Maritime Research Institute Netherlands is blended in...
In Finland is the world biggest towing tank with ice. Used for a testing ice breakers
Fascinating video.
What about high winds with violent seas?
I want to try it…
Kinda odd how you did Froude twice.
Im a former water wastewater engineer. We used Froude all the time for hydraulics calculations.
2:05 I mean… pianos make wave too…
Wow! 12 million gallons of water. The wave pool at the West Edmonton Mall, in Edmonton, Alberta Canada only contains 3.3 million gallons of water. LOL
Nothing can replace actual hands on trial and error. I wanna play with boats in a big bathtub all day. And get paid for it. 😂😂😂😂😂😂
Honestly though it looks like a fun fulfilling job.
"Instead of sounds, they produce waves"
Last time I checked sounds were waves...?
Just being picky :P Keep up the great work sir
Instead of sound waves the new wave generators produce water waves?
Damn that's one deep pool