Can you share the JoubertBB2 submarine model, thank you
@athenkosi1675 Жыл бұрын
what is used to simulate this if i may ask
@stevestokes42062 жыл бұрын
What type of materials does Marin use to make the miniature/ model vessel container and oil tankers? I'm curious to find out. I believe what this company is doing is an amazing feat. Also benefiting the whole globe.
@elevatorvideos26102 жыл бұрын
Hi from Latvia i love ship and boats
@TomFYouTube2 жыл бұрын
Maybe if container ships wouldn't stack containers so high, the Center of Gravity would be lower, sway angles and inertia would be lower, and less containers old be lost? I'm not even a engineer. Funny how you turn off comments to those post analysis videos.
@ossiedunstan44192 жыл бұрын
If you post on youtube and disable comment your not a research institute your a bunch of nazi fucking arseholes. Don`t like criticism DONT POST ON SOCIAL MEDIA . Fucking scientist's my arse, SCINETISTS ARE OPEN CRITICISM. I know have no respect for the netherlands well done. To me the Netherlands is just another ignorant and superstitious state of religion. Religion does not allow criticism.
@huseyinsezgin86042 жыл бұрын
Ship cvt 😁
@michaelguerin562 жыл бұрын
Long term task but worth the effort to find practical i.e., not electoral campaign or sound-bite, solutions. The Roaring Forties might regain some of their previous maritime transport significance.
@sparto55712 жыл бұрын
What software tool is being used?
@TrustMelDontCare2 жыл бұрын
Hey, awesome, a video I can comment on. I just wanted to say, these videos are awesome and I really enjoy watching them all the way over here in Canada 🇨🇦
@SFCmain2 жыл бұрын
what if a emergency "airbag" like device was attached to the ship that can be deployed to stabilize the ship if needed.
@ABCXYZ-sz9gh2 жыл бұрын
If you guys cared about boating safety you’d acknowledge inexperienced crewmen and bad decision making. Boating accidents on container ships are easily avoidable. It’s called is your boat designed for the seas or not? Are the containers able to freely move around the deck in the event of too much heeling to one side? It’s so simple yet you probably spend 100s of millions on “research” to tell you what people are already aware of.
@spaceman24642 жыл бұрын
I love the test and very detailed explanations these videos give.
@michaelwallace92913 жыл бұрын
I'm missing something
@e3IZrZ3 жыл бұрын
I think it's the fact the little boat has a MARIN flag, sort of like a "Hey, look we are doing things!".
@Jack-rn6xj3 жыл бұрын
Super cool
@bigups433 жыл бұрын
Very cool. Now I want a model sailboat and a monster wading pool with fans.
@MOTOMINING3 жыл бұрын
Would a cort nozzle alleviate this?
@onnoheesbeen3 жыл бұрын
In welke schaal is het romp model?
@WilliamVerhagenMelin4 жыл бұрын
Hey, could someone explain to me why cavitation here mostly happens at the top instead of evenly around the propeller?
@andrewsnow73863 жыл бұрын
I'm no expert, but after some searching, I found this paper (I hope I got the link right, I'm not an expert at them either): www.mdpi.com/2077-1312/6/2/34/pdf Anyway, it says: "Single-screw ship wake fields are usually characterized by a strongly non-uniform distribution of velocities with a wake peak at the 12 o’clock position, where the axial velocities are particularly low. This means that the blade sections of a propeller operating behind the ship experience strong variations in angle of attack. As the hydrostatic pressure acting on the blade reaches its minimum at the same time as the blade experiences high angles of attack while passing through the wake peak, this region of the wake field is particularly critical in terms of cavitation." Note, by "wake field", they are not talking about the waves the ship produces. They are talking about the water that the ship drags with it as it moves. Let me rephrase the above as best I can: There are two reasons cavitation is worst at the top of a ship propeller. 1) The water is moving slower (relative to the ship/propeller) at this location. 2) Being closer to the surface, the water pressure is lower at the top of the propeller. Expanding on (1): When a ship moves through water, it drags some of the water with it. By the time the water gets to the propeller, the water near the top of the propeller has been pulled along with the ship more than the water near the bottom of the propeller. I'll just make up some numbers here. Maybe the ship is going 18 knots. The bottom of the propeller is a long way away from the hull. So the hull doesn't effect it too much. The water coming into the bottom of the propeller might hit the propeller at 17 knots. But, near the top of the propeller, the ship's hull has really been in the way of the water. The water might hit the top of propeller at only 13 knots. Thus the top blades have to push harder to get the water up to speed, and this makes cavitation more likely. NOTE: I DON"T KNOW IF THE WATER IN THE VIDEO IS APPROACHING AT DIFFERENT SPEEDS Now about (2): Cavitation happens when the local pressure gets too low. As you go deeper in water, the surrounding pressure gets higher. Thus, the deeper a propeller is run, the less likely it is to cavitate. On a large ship propeller, there could be a significant difference in pressure between the top and bottom of the propeller.
@memememine13 жыл бұрын
@@andrewsnow7386 Thank you for the explanation!
@antonioguedelha88594 жыл бұрын
Very Good. We are making tests with cavitation for Cannabis Oil extraction ate PHARMAIUM
@yuriyoryshchuk42034 жыл бұрын
Cool! What is the maximum deep for this apparatus? And do you have any data connection system from the base to the mAUV ?