Chapter 285 Marder, where is the sail! [Please order in full]

Seeing this, Ren Yan immediately gave the other party a big roll of his eyes.

“Have you ever played with paper boats?”

"After a piece of paper is folded many times, even the gaps are waterproof, let alone wood."

"and"

"Everything you could build before was already called keel and ribs."

"Have you ever seen that kind of creature with bones growing on the outside? It's not a shell. Of course it grows inside the body~"

"Can you use your brain?"

"You mean, the outline of the ship needs to be covered? Including all the keels, ribs and the like?" Wang Bo asked in surprise.

Ren Yan nodded: "That's right."

"However, the keel is the shallowest package. It is the overall support of the ship. If the package is too tight, it will not be effective."

"But the other ribs, they are the support of the ship's 'flesh', and the flesh and blood need to grow on them."

"What about besides flesh and blood? You also need a layer of keratin and skin. Only in this way can we truly prevent all foreign objects."

"So, the hulls of ancient ships were not one layer at all."

"Sometimes, the name of an object can fully understand its usefulness. You have to think more about it. Don't just see the image in front of you, but discover the inner part."

"But the structure of the two-layer hull can really be floated by sea water and supported by the keel?"

"They are not the same weight class at all."

"Moreover, even if there are two layers, won't the gaps still exist?"

"The boat made of paper is a whole. Strictly speaking, it has no gaps."

In the end, Xu Kai asked this question in confusion.

He really couldn't figure out how it was done.

Hearing this, Ren Yan fortunately sat up from the chair, picked up a piece of scattered wood with bark and carefully buttoned it up:

"Did you see that something as rough as tree bark can prevent moisture and protect the trunk inside it? The reason is because there is a layer of connection between the bark and the trunk."

"Just like our skin, since there is no direct connection, why not add another layer."

"A layer that is mainly used to prevent moisture loss."

"Haven't you guys done this before?"

"You mean, gum?" Xu Kai was stunned.

"Otherwise?" Ren Yan threw away the wood.

"There is a two-layer structure with a specific waterproof layer in the middle. The inside and outside are connected with mortise and tenon joints to leave a certain staggered space. Finally, they are painted. Wouldn't it be possible to completely isolate the sea water?"

"After that, as long as we perform regular inspections and make repairs, we can continue to operate for a long time."

"There are so many wonderful things in the universe. Any point can open up your thinking. Don't always think of solving problems in established ways."

"As for the weight issue you just mentioned, it depends on your material selection and calculation."

"As long as the whole is conserved, the ship cannot sink."

Having said that, Ren Yan threw himself into the recliner again, flipped through his phone and began to look for opportunities for sailing trials.

By the way, I asked about the specific time of the invitation sent when I first arrived at the warehouse.

He really feels like he's struggling on his own now.

This is only the second step of shipbuilding, and Class 9 has encountered so many problems.

I can only give a general outline at most. If I really want to go into every detail, I will definitely not be able to do it.

and

Thinking of this, Ren Yan glanced at the packed warehouse.

This warehouse is really a bit small now.

As for the people in Class Nine, they were slightly in a daze.

Looking at the wood that Ren Yan pushed aside the bark and threw down, he was stunned.

Can such a hull problem really be solved with just such a piece of wood?

They always find it a bit unbelievable, but after simulating it in their minds, they feel that this method is really feasible.

The principles involved are simple and straightforward.

It's just a ship being compared to a living thing, and the hull of the ship being compared to skin.

What they have to do is to strictly follow the metaphor of the 'creature' in their minds, add it layer by layer, and slowly turn it into a 'living creature'.

This suddenly gave them a sense of 'creation' instead of simply building.

At this moment, the students in Class 9 completely changed the preconceived notions in their minds, and more ingenious ideas gradually brewed in their hearts.

They know how to build this hull!

After thanking Ren Yan, Class 9 returned to work again.

Following the tips given by Ren Yan just now, we started new work.

First of all, there is the issue of material.

Since two layers are required and special bonding is required in the middle, the material selection must be as light and tough as possible, while also taking into account the degree of bonding with the gum.

After various experiments and practices, the surveying and mapping team finally selected pine wood.

This thing is known as an evergreen tree. It has excellent toughness. At the same time, because of its unique material, the wood is tight and light, and the bond with the gum is pretty good.

It is considered to be the most perfect material among wood at present.

As for the mortise and tenon joints that will be needed later.

The production team also came up with new methods, since keel type mortise and tenon joints cannot be used.

They simply started thinking using the way of thinking that Ren Yan had just taught.

A small, specially processed pin is added as much as possible to every mortise and tenon connection, so that it can be precisely connected and also play a role in dissipating force.

They call it 'tendon'.

This kind of ribs will be distributed throughout the inner and outer layers of the entire hull. The force dispersion effect of one may not be visible, but if there are more of them, the effect will not be much worse than that of the keel.

This is a special structure that they came up with after racking their brains.

On the outside, it looks like an ordinary ancient ship, but on the inside it is something special.

After some prototype tests, Class 9 believes that there is no big problem if the entire hull can bear a weight of 500 kilograms.

Xu Kai even recorded this structure completely in the shipbuilding drawings.

With the deduction calculations and realistic simulations carried out by all members of Class Nine, although there is still no plank erected on the hull, the progress is officially on the right track.

In the following time, they were all busy with problems with the hull.

Although new problems arise from time to time.

But with their minds completely turned around, they encountered no real difficulties and were still proceeding in an orderly manner.

And in order to really pass the quality standard, they have to conduct a test every time they complete the splicing work of a piece of wood.

What is done most is the waterproof test.

For this purpose, they also specially obtained a large bucket of sea water.

Only if the newly put up wooden planks can withstand twenty-one splashes of sea water without any leakage, will they consider this piece to be qualified.

And will be marked with unique marks.

Of course, this kind of testing is only during construction. After the first floor is completed, they will conduct an overall test.

But then they would be in the sea, and they were full of expectations.

I am also very fortunate that the warehouse rented by Teacher Ren has a seawater shipbuilding area on one side, otherwise it would be a problem to let the half-built ship enter the sea.

Two days passed with this clear goal in mind.

Two days later, the first floor of the warehouse, which was about one meter high, was completely completed by Team Nine.

It has been glued and painted, and all measures have been taken to prevent moisture, moisture and insects.

On the side of the shipbuilding area close to the sea, Team Nine laid out a large number of rolling logs, supporting their half-built ship from high to low. With a concerted effort, they pushed forward the ship that had given them hope.

nautical miles.

The moment the waves splashed, everyone felt a strong sense of accomplishment.

After about a month, the ship built by their ninth team was finally launched into the sea.

Although it is still an embryo now, it can finally be called a ship.
To be continued...