After a period of lamentation.

The students of Class 9 could only put away their depressed hearts and began to look for new 'keel' wood in the vast wood again.

The keel is not as high as others, and the quality requirements are much higher.

The first is length and width.

Stout, long, and hard are the first elements.

And for the convenience of the follow-up, it is best to have a little arc on the slight edge, which is the most suitable keel.

It took them a while to find the one they had found.

But he was 'taught' by his own teacher.

They had to look for it again.

But fortunately, with the first experience, it is not very difficult to find it again.

Soon, Class 9 found another piece of wood that could be used for it.

The species is fir.

Although the length is not as good as the previous one.

But this one is thicker and has a rather hard texture.

Coupled with its easy processing and corrosion resistance, it is also an excellent choice for keels.

After finding the right wood, Class 9 marked it again and sawed it down in the shape he wanted.

Martian wood chips are everywhere, and a piercing grinding sound is heard...

Several students started work at the same time, and the model of the keel was cut out in a short time.

After that, the students on standby immediately took out the 'keel', put it on the work platform, picked up the planer and began to sharpen.

They have checked, the keel must be smooth and flat, only in this way can it better connect the side keel and many ribs.

It can be said to be an indispensable link.

The sound of rubbing kept coming, and the shavings rolled up little by little.

As time passed, there were more and more shavings, and the entire keel was polished into shape.

Finally, after sanding off the small debris with a burst of sandpaper, a four-meter-long, two-meter-wide 'keel' with a slight arc is completed.

Look at this decent keel.

Off-screen netizens and judges kept sighing.

Class 9 has really grown too much unconsciously.

Shipbuilding, a very difficult thing, they really completed the most important step by themselves.

The keel in front of them, whether it is the appearance or the degree of polishing, is not far from the keel they found on the Internet, and they know at a glance that it must be qualified.

However, while everyone praised it, judge Keji was stunned:

"That's not right..."

"Although this keel looks perfect, isn't it still a little too small?"

"If Class Nine is going to build an ordinary ship, then this keel is definitely enough."

"But what they want to build is a Daming treasure ship, and the design drawings given are one hundred and fifty meters long alone."

"This keel is only four meters long, so it doesn't seem to be enough at a glance..."

Hearing this, the judges were stunned.

They hadn't really noticed that.

So what's next for Class 9?

Once again, they turned their gaze to the live stream.

......

Inside the warehouse.

The students of Class 9 looked at the keel in front of them, and their expressions were a little tangled.

They are also aware of the problem of insufficient length.

Previously, they only analyzed and plotted the data, but after the graph, they didn't take into account the problem of too much size.

Subconsciously think that as long as you follow the direction of the design drawing, there will be no big problem.

So I put more energy in other directions.

Moreover, the four-meter-long trees are still very bluffing at first glance, and they subconsciously think that these pieces of wood are enough to act as keels.

But it wasn't until they were molded and the ribs were ready to be made against the blueprints that they discovered the problem.

It was also the first time they realized the gap between design and practice.

The gap between the two is reflected in the hard data.

The shock is very different.

The larger the scale, the deeper this feeling becomes.

The easier it is to overlook it when making it for the first time.

And in addition to the length, they also found another problem, and that was the radian.

Although the keel in front of you is curved.

But this arc is too small after all.

In the design drawings, the Daming treasure ship is divided into at least five floors.

The bottom layer is a vacant bottom warehouse, which is about seventy or eighty centimeters high.

The second and third floors are storage, which together are at least two meters high.

The remaining two floors are the crew's rest cabins, also with a height of two meters.

Above that, there's the deck.

Just looking at the data, the entire hull has a breadth of at least five meters.

The keel runs from the bow to the stern, and a single piece of wood connects the entire ship.

In other words, the curvature on both sides of the keel must be at least five meters high, and it must also form a perfect streamline.

Only in this way will the boat experience minimal resistance while sailing.

These are all things they have worked on for the past few days.

They were happy for a while.

As scumbags, they actually used mathematics to really solve a problem in front of them.

But now, they seem to be thinking about this problem too simply...

Shipbuilding is far more troublesome than they imagined.

"Or, let's make a new one, this time mark the arc that should be there, and re-polish it, so that the arc should be there."

"As for the length, let's think about the next way?"

"Or just buy more than a hundred meters of wood?"

After a moment, Li Cheng frowned.

Hearing this, Ah Wei immediately shook his head:

"Not to mention that there is no wood we buy now that is more than five meters wide, and it is impossible to make a perfect curvature."

"And the wood you said is more than 100 meters old, have you ever seen it?"

"Even if it exists, it still has to meet the requirements of the material, and the growth rate of those solid woods is very slow, according to the timber traders, fir is the fastest growing wood among them."

"In this way, it can grow a maximum of one meter a year."

"More than 100 meters, how long do you think about it."

"Moreover, the most important thing is that the price of their eighty-meter finished fir has reached 500,000, do you think that even if there is one hundred and fifty meters, can we afford it?"

"And after buying it, there is no chance of trial and error."

"So the idea you came up with can be ignored."

"Hey, don't you just say you don't have any money?" Li Cheng sassed.

Ah Wei glared at him back.

But everyone else nodded, Ah Wei was not wrong at all, these two points are indeed a big difficulty.

And there's a little bit of a feeling of helplessness.

"But it should still be done."

"Otherwise, Teacher Ren would not have been able to come up with such a problem."

"According to your understanding of him, would he give such an impossible task?"

Wang Yu thought for a moment and asked.

The others shook their heads.

Although my own teacher is quite inappropriate, I can really solve all the problems I give.

"That means we must have something we haven't considered."

"You're saying we're going to go back to square one and start reimagining the plan?"

Li Qi was puzzled.

Wang Yu shook his head: "No, let's just go and ask Teacher Ren directly." ”

"Since we haven't considered or inquired about these for more than a week, it means that these are really not something we can solve for the time being."

"It's the same as a question that can't be done, it won't be won't, and if you want to break through the sky according to your own thinking, it still can't be answered."

"Instead of making painful revisions, it's better to ask directly."

"Since we can't figure it out, there's no shame in asking for help."

"Moreover, what Mr. Ren wants is for us to be able to think and act on our own, and we have achieved this."

"Then when he encounters a problem that he can't, he shouldn't refuse to help."

Wang Yu said, and the students of Class 9 turned their hearts and walked in the direction of Ren Yan.

If you are despised, you will be despised!

Wang Yu is right, his teacher is still very reliable in this regard.

Since the other party has given the problem, there must be a full set of solutions.

Wouldn't it be a shame to ask for help since you can't?

They really don't want to waste another week and then have nothing to gain.

And I don't know if it's an illusion.

They always feel that their 'self-esteem' is getting stronger and stronger.

I rarely take the initiative to ask for anything, and I try to solve it by myself as much as possible.

Sometimes, even if I ask, I just say it casually, and I don't really care.

Although his own teacher has been guiding himself and others in this direction.

But there was no complete refusal to help.

Isn't it too much to do some of it yourself?

So, is it really good?

At this moment, they seemed to know this answer.

Everything is too much.

Wang Yu, a scholar, is worth learning from, and there are many more...