Chapter 2840: 2840 - - 75-20 Balloons

Jin explains the purpose of his visit to everyone.

"I came here because I heard that a new invention had been made at the Goh Lab.

"I see. You have a quick ear."

Eira was impressed.

"So, I don't know anything about it, what kind of invention is it?

"Oh, I don't know. ...... that."

Eira pointed to a balloon.

At first glance, it looks like an ordinary helium balloon. At first glance it appears to be an ordinary helium balloon. ......

"Father, that balloon seems to have slightly more buoyancy than the helium balloon.

"Yes, I think you're right, Miss."

Reiko and Hope recognized the special characteristics of the balloon.

"Oh, that's great. Yes, that balloon has enhanced buoyancy. Of course, it's not hydrogen."

"Really?"

Normally, balloons are filled with a lighter-than-air body.

According to Archimedes' principle, the buoyancy is obtained by multiplying <> by <>.

Hydrogen is the lightest gas to fill the balloon, but it is flammable and has caused serious accidents on Earth in the past, so helium was used as the next best gas.

"A gas that is neither helium nor hydrogen?　No, there should be no such thing. If so, ...... could it be <>?"

"Wow!　Jin, you hit the nail on the head!　You're the Magecraft Meister!"

"Well, ...... it was just a guess, but ...... so it's a vacuum. ......"

Hydrogen and helium also have <>, which reduces their buoyancy.

In other words, the empty < is the lightest <.

However, when a vacuum is created inside a container, a pressure of 1013 hectopascals (atmospheric pressure ......1 = 1013 hectopascals) is applied, and a low-strength container will be crushed. The container with low strength will be crushed.

On the other hand, a container strong enough to withstand 1 atmospheric pressure is <. It will not be able to float. .......

Therefore, if you have developed a container that can withstand 1 atm of pressure while keeping a vacuum inside...... if it is a balloon, it is definitely a <>, it is a <>.

"Maybe it's ......<>!"

"You hit it again!　Jin, you're the best!

Eira was impressed, but with such an example in front of her eyes, Jin could have guessed it.

However, Eira and the others are indeed impressive for having made it this far on their own.

"Well, if you give me an example and a hint, I can imagine it.

"No, you don't."

Eira told Jin once and for all.

"Well, anyway, I used a <> to create a <> inside the air sac to release the air inside.

"Haha ...... that's a great idea. I would never have thought of that. ......

"That's because Jin would have been able to build an aircraft more powerful than a balloon much more easily. I'm sure he'd never have thought of that."

"Well, ...... I guess so. ......"

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> also had his own area of weakness.

Regardless of that, the prototype balloon is now floating leisurely in the sky.

It looks like a golem.

"It is a lightweight golem developed for balloon piloting. It's designed for reaction time, eyesight, and low power."

"That's good, isn't it?　It's a good idea to give it specialized performance depending on its use."

Jin also looked up at the balloon.

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The propulsion system seems to be .

"The next challenge is to apply it to airships, not balloons," he said.

"Is it a question of flight speed?"

That's what I meant.

So far, the speed of the balloon is about 20 km/h. That's about the speed of a bicycle.

The spherical shape of the air sac makes it difficult to fly fast because of the high air resistance, and it is also susceptible to the wind.

"Hmmm... ...... instead of making them long and thin, why don't you make them flat?"

"What?"

<

The drag would be larger than that of a cigar shape, but smaller than that of a sphere shape.

Also, the pancake shape seems to be more stable.

"Well, that's something to think about. Thank you, Jin."

"No, I am glad if it is helpful. By the way, please refer to ......."

Jin confirms the most important matter ......<>.

"How about the stability of <>?"

If it is an air sac filled with light gas, it takes time for the air to escape (unless the air sac is heavily damaged).

However, in the case of wards, if the supply of magic power is cut off, it will disappear and the air sac will be flattened immediately.

If that happens, the air sacs will be flattened and the ...... will crash.

"In that regard, we have two systems of <> >."

"I see."

The barrier must be airtight and withstand one atmospheric pressure.

Since these two functions are essential, the amount of free magic element (ether) consumed is low. Also, it does not fluctuate.

Therefore, the magic circle method can be used.

If we have two systems, even if one system stops, the other one is still working and there will be no crash.

< is so lightweight that two systems of the same type will hardly increase the weight.

"If we want to make it even bigger and add more crew, we're going to increase the number of systems from three to four."

"That's a relief. With ...... and the pancake shape you just mentioned, it might be ...... usable as a parachute in case of emergency."

Eira was impressed when Jin said, "I can't say for sure, because of the area and weight involved.

"No, no, it's great that you can immediately name that many advantages. That was helpful."

"I hope so."

As they talked, the balloon slowly descended and landed safely.

All the members except Eira, who was talking with Jin, rushed to the balloon and started checking various things.

Eira asked, "Are you sure you don't want to go?

Eira shook her head.

"I won't miss anything if I don't go alone. Besides, it would be more useful to talk with Jin.

"I'm flattered to hear you say that.

In the meantime, the checks seemed to have been completed and the rest of the group gathered at Jin's place.

"Mr. Jin, I apologize for the delay in greeting you.

Mr. Jin, I apologize for the delay in greeting you," said Lois Eisker, the head of the Aeronautical Research Laboratory.

Mr. Jin, it's been a while. Please let me know what you think later.

This is Rasnath Heilbronn, Director of the Gor Laboratory.

He also greeted Zora Himmel, the deputy director of the Aeronautical Research Laboratory, and Klaatos, Raghu Gutan, and Kumir, all of whom he knew very well.

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