Magi Craft Meister

"A vacuum balloon... no, a vacuum balloon."

Jen Ella and the others who returned to the lab enter the review meeting.

It began with the unification of nomenclature.

"Recently, I've been studying with Aerospace Research."

Rasnat Heilbronn, director of the office, told Jin.

"First of all... if there's anything special to you, Jin, let me know."

Jin opened his mouth thinking that I was a special guest.

"Well... first of all, let's praise the beauty of the idea."

Whoa, whoa, whoa, whoa, whoa.

"Then, in terms of weight reduction, it's not magic equipment, but a barrier (barrier) that uses magic formations."

"Oh, thank you. It was Cachet who came up with the idea.I was thinking of using magic tools. "

Was that so?

And applause was poured out, and the chair fell down in illumination.

"The next thing I care about.... why are you hanging a gondola from your air bag? "

When the wind was strong, the airbags and gondolas were affected separately, so it was thought that the gondolas in particular would not be stable due to shaking.

If you attach it directly to the airbag, it will be more stable, says Nin.

I wonder if there's any material left.

Nin said that weight reduction and strength seem to need to be considered.

"Um, it's a prototype hanging from a gondola..."

Eira explains.

"As Jin says, we don't have to stick to the balloon format, but we're still experimenting anyway."

"That's right.Look at this. "

Following Eira, Zola Himmel, deputy director of aeronautics, showed me a rough sketch.

In addition to a cigar-shaped airship, various proposals were drawn, including a square arrangement of four airbags.

Most of them had gondolas attached directly to their airbags rather than cabins.

"Well, assuming the weight of the air is 1.2 grams per liter, it would take 167,000 liters of airbag capacity to lift 200 kilograms."

Since one liter is one thousandth of a cubic meter, it will require an airbag of more than 167 cubic meters.Of course, 200 kilometers is the weight of the airbag and the cabin.

With snake feet, 167 cubic meters is a cube with a side of 5.5 meters.

In addition, the capacity of a typical 12-foot container for a railroad is 18.7 cubic meters, with snake feet.

The explosive Hindenburg was said to have a maximum capacity of 200,000 cubic meters and a total weight of approximately 220 tons, while the other snakefoot was still alive.

"Target is one tonne."

A vacuum bag with a capacity of 835 cubic meters is required for calculation.

The "vacuum balloon" that can float one ton is about 4.5 12-foot containers.

Looking at this value, it can be seen that the loading weight per capacity is slightly larger than that of the previously raised Hindenburg (about 1.1 km for the Hindenburg and about 1.2 km for the "vacuum balloon").

"That size is practical."

"Yeah, it would be reasonable as a goal with us."

Laboratories are only development, and commercialization and mass production are carried out by separate departments or external companies.

"What about the propulsion machine when it is put into practice?

Since I was concerned, Jin asked me that question.

"I'm a little worried about that."

The answer was Lower Escar, director of the Aeronautics Laboratory.

"I'd like to use an injection thruster, but it's heavy."

"Maybe."

Initially, Jin developed the "injection thruster" for ships.

If you try to use it on a balloon or an airship, it's no wonder its weight is a problem.

"I see, you want a light propeller."

Rather, it would be better if all the equipment on board were as light as possible.

"That's right.... because it's unlikely to be a magical formation. "

"Really?

Huh?

Jen tells Lower Escar in the face of Noble.

"Depending on how you think, you can use magic formations, right?

"Well, how do you do that?

"That's right...."

I thought it would be easier (easier) to explain it because I have found answers as a benefactor, but it would not be good for them.

So let me give you a hint first.

"I'm sure air travel is caused by the wind, but how can we move efficiently with the wind?

What?

Lower Acker, who can't answer questions all of a sudden.But Ella answers on his behalf.

"Well, first of all, you mean 'I won't miss the wind'?

"That's right. Then what shape should the propulsion engine be in?

"Is it a highly sealed shape?

"Exactly.... you can think about it properly."

"... maybe we should blow the wind in one direction in a sealed container...?

"Big win! That's right."

Jen praised Eira for her ideas.

This is an idea that took years to reach Jin himself.

Rather, it may take time to reach the point where there is a "science" culture.

'No recoil' magic is the only way to do it.

If you know the "action reaction", you may not think of it as disturbing.

"... that means you can blow the wind in one direction in a hollow cylindrical container with closed ends?

"Hmm, it looks like the air circulation is bad, so I think we should keep both ends in the hemisphere."

It will look like a hard capsule of medicine.

This kind of thing is also unique to the magic of "no recoil" or "neutralizing the reaction".

Ignoring the general laws of physics, it is difficult to imagine for those who are interested in science.

In fact, it is a method that Jin did not come up with 400 years ago.

"Then why not arrange it in a cylindrical shape instead of a circular magic formation?

"Oh, Cachet, you're amazing!That's right, that's right!

Ella jumps at the suggestion from Cachet.It's a good combination. I was glad to see Jen.

"But Jin, if you put a magic team in a sealed container, it's hard to control.

Eira, it's a cylindrical magic team, so you can carve it on the outside of the capsule.

"Oh, I see.If only the part of the parameter that changes the output is variable, we can start, stop, and adjust the output. "

"Ah, no, why don't we just drill a hole in the capsule and manually... open and close it mechanically?

Gloma came up with a good line of ideas.The larger the opening, the weaker the propulsion, and the stronger the closure.

"If you can think of that, you'll be all right."

"Ah! Thank you, Jin!

"Thanks for the tip, Jin-san!

"That's Magic Engineer Magikraft Jazz!

Thus, a "sealed propulsion engine" was born.