Magi Craft Meister

Jen, who independently develops the "Magi rocket engine" (tentative name), found room for improvement in "explosion" magic.

The Earth's rocket engines are inflating and jetting air and propellants due to rapid combustion, but [heat] and [light] are not necessary for a magical explosion.

Ren recognized that it was a physical phenomenon that was not necessary for the "Magi rocket engine (tentative name)".

"In other words, an explosion without heat or light..."

[Mana Explosion], my father.

"It's going to be... a little too dangerous and too special."

[Mana Explosion] is a legendary magic.

I could use Reiko, but not the average magician (Magic Craftsman).

And the risk of incorrect control is too high.

One mistake could cause the engine to explode.

Some error is acceptable for destructive purposes, but it is not suitable for use in propulsion engines.

First, let's see if we can remove the heat from the Firebomb.

Got it.

Therefore, Jen used "read (de-compiled)" to analyze the composition of "fire bomb (firebomb)".

In the old days, it was like finding an order (command) to erase the recoil from the wind attribute magic, erasing it, and reconstructing it...

"Hmm... I understood the command (command) to generate heat because it's fire attribute magic."I just feel like I can't inflate the pseudo-air anymore... "

Jen's analysis of the "Fire Bomb" seems to follow a process such as controlling the free magic element (ether) to temporarily create a pseudo air molecule and diffuse it with heat...

The air molecule returned to the free magic element (ether) in a few seconds after it was jetted.

In other words, where there's no air... it can be used underwater or in a vacuum without any problems.

"That's good news... but I don't have a fever..."

Jen thought that the choice of material and heat countermeasures to the installed counterpart might be problematic.

Reiko gives such advice to Jin.

Father, at a time when we're trying to improve our magic, it's impossible for ordinary magicians (magic craftsmen).

"Ah... I see."

Despite the fact that it was developed on the premise that it was intended for the general public, it is in a sense Jen's sexuality (saga) that we will try to pin down in this way.

First, we need to put this method into practical use, and then we need to consider something for ourselves.

"I think that's good."

That's why Jen began to think about physical heat countermeasures.

Adamantite has a surprisingly good thermal conductivity.

It is inferior to copper and aluminum, but has much better properties than light silver and iron.

"Do you want to install heat dissipating fins on the outside of the engine first?"...... no, should I insulate it rather than cool it? "

Jen decided to test how engine temperature increases affect performance.

I used the engine I used earlier.

Expand the physical barrier (solid barrier) and investigate how the efficiency differs between when the internal temperature is raised to 500 degrees Celsius and when it is 0 degrees Celsius.

Reiko, please.

"Yes, Father." I'll take care of it. "

And the experiment started.

”Hmm... it's hardly any different.”

It was found that the efficiency of the "Magilock engine (tentative name)" varied minimally at the ambient temperature used.

"In other words, of the [Firebomb] effects, [Heat] probably doesn't make much sense."

This fact will be helpful when making Ren's own [Maggi rocket engine (tentative name)].

However, it is now a development for the general public.

The balance between power and heat.

Therefore, it was decided to confirm the heat generation when the propulsion force was maintained at 500 kilometers.

Reiko, please.

"Yes, Father."

The result was 550 degrees Celsius.

Similarly, when thrust is limited to 300 kilometers, the engine temperature is stable at about 400 degrees Celsius.

Alright, this is the tolerance value.

If the standard thrust is 300 kilometers, the engine can be made lighter.

Even if you can withstand twice the thrust in an emergency, half the strength is enough right now.

The safety rate is expected to be sufficient.

I wonder if I can use heat-resistant steel or high tensile steel instead of Adamantite.

This leads to lower costs and mass production.

However, as mentioned above, since the thermal conductivity varies between Adamantite and steel, the design should be carefully considered.

"And then the vibration..."

Since it is detonated at 0.2-second intervals, a vibration of 5 hertz is generated.

This was supposed to be passed on to the aircraft and make them feel uncomfortable.

Since it is difficult to shorten the explosion interval any further, I will try to adjust it so that the vibration will not affect the aircraft...

Let's do this first.

It was not until the evening of that day that the numerical values and characteristics were once again verified.



It's been a long time since I had a hard time, but I got good data.

"That's great, Father."

Reiko was happy to see Jin's face, which seemed satisfying.

There are two types of "Magi rocket engines (tentative name)" that have been completed.

For popularization. Made of heat-resistant steel.JIS (Japanese Industrial Standards) is equivalent to SUH330, and is a steel containing 33% nickel and 14% chromium.

Nickel and chromium are cost drivers, but they are cheaper than making them with Adamantite.

The maximum nozzle diameter was 20 centimeters and the total length was 50 centimeters due to the size of the nozzle being easy to handle.

The weight is about 25 kilograms by control system, and the maximum thrust is about 1.7 tons (about 16.7 kN).

Currently, in Japan, the "force" such as thrust is expressed as N (Newton) or Kgf (kilogram weight or kilogram force).

For reference, F-15 (Eagle) engines exert more than 10 tons of thrust per engine even in the early model.

For Penglai.

Magi Adamantite is used.

The maximum diameter and total length of the nozzle of the same size are the same 20 cm and 50 cm, the weight is about 40 kilograms, and the maximum thrust is 22 tons (about 216 kN).

It is possible because it uses Adamantite, which boasts more than 10 times the tensile strength compared to steel of the same weight.

For reference, the LE-7A engine used in the first stage of the H-IIA rocket has a thrust of about 1100 kN and weighs about 1.7 tons.

The Maggi rocket engine (tentative name), which exerts nearly one-fifth thrust at a weight of 40 parts or less, is still excellent.

After this, Jen removed "(tentative name)" and officially named it "Magi rocket engine".