On the morning of May 5th, Jin woke up in his house on Horai Island.
It is a quiet morning with only the sound of birdsong.
Erza is with her mother, Meene, in the village of Kaina. Jin is the only human on Horai Island now.
"Ah, I slept well.
"Father, you're awake."
Reiko, sensing that Jin had awakened, opened the sliding door and showed herself in.
"Yes, I'm completely exhausted.
"I'm glad to hear that."
I'm going to start working on the spaceship today.
"Yes, sir."
During the month or so that Jin had been visiting a foreign country, the old man had been leading the prototype and operational tests of the spaceship.
Today is the day to hear the report.
Jin finished the breakfast that Reiko had prepared for him and went to the laboratory.
In the vestibule, there was a spaceship with a diameter of 10 meters.
"I saw it yesterday, but it still seems big.
The spaceship is almost spherical in shape. The crew is the same size as . This is a miniature golem, the <> series, measuring 40 centimeters in height.
Since it is a quarter of Jin's size, the time and materials for prototyping were saved.
"Yes, please."
In the control room of the Horaijima Research Institute, Jin receives a thorough explanation from the old man.
The miniature craftsman (Smith) is 10 cm tall.
It took four days to accumulate the know-how for the spherical spacecraft proposed by Jin.
>.
"Hmm? What do you mean?
>
"Oh, I see. There is no gravity that can be used as a reference."
<
He deduced the data obtained from the data and identified the problem.
Without a reference point, it is difficult to stop a spacecraft when it starts a rotational motion.
It reminded him of the failed attempt to launch a geostationary satellite.
"Yes, indeed."
The problem when acting as a fleet is the sharing of reference points.
The direction of movement can be determined, but if the reference plane is different for each spacecraft, the directions will not be aligned.
If the flagship gives an instruction such as "change course 30 degrees upward," it will be a problem.
Of course, it is a navigational problem, so it is better to have a reference plane, but it is still undesirable for each spacecraft to have a different <>.
<
Unless otherwise indicated, the reference plane is the plane parallel to the circle (or more precisely, the ellipse) around which Ars orbits.
> "That will be the case.
"That would be the case."
When the flagship says steer, all ships turn to the left.
"No, that's fine. I'm not going to go out of the solar system just for the heck of it."
<
The next step is to go out into space, overcoming the force of gravity, and then re-enter the atmosphere.
For this, the data of < and re-entry into the atmosphere were useful.
"Yes, I think that is correct.
Since the failure of <>, Jin has been very cautious about space expansion.
<
The old man, taking over Jin's prudence, also took double and triple safety measures.
> and <> have been installed.
The wind deflector is currently incapable of displacing air molecules at speeds faster than Mach 3.
The physical barrier generator (barrier projector) protects the hull from overheating caused by adiabatic compressed air. At the same time, the air collision is mitigated by the wind-avoidance boundary.
"Oh, yes!"
<<
"That's great news."
<<
The maximum speed was approximately 300 km per second and the maximum acceleration was 20G.
"That's great for a prototype. ...... Well done."
.
"And the one that was in the vestibule was a quarter of that size, right?"
The old man then reports the results of the test.
<<
"What is it?"
"I see. ......"
Even outer space is not a perfect vacuum.
Even a microscopic meteorite or a tiny speck of cosmic dust can be fatal to a spacecraft flying at very high speeds.
"Even in space, barriers will be essential."
.
I agree with you, old man.
"I see. ......"
300 kilometers per second is more than Mach 880 on the ground.
The maximum output of Reiko's special weapon, the Magi Cannon, is Mach 80. Even a tiny speck of cosmic dust would have a powerful destructive power if hit by a collision at a speed more than 10 times that much.
"Hmmm ......"
Jin considers various ways to increase the strength of the barrier.
The simplest one is to multiply them. Two barrier generators (barrier projectors) would double the strength of the barrier.
But it is not very smart.
"How to make it more efficient: ......"
Jin is pondering. But his face is happy. It's a look that says he enjoys thinking up new ideas.
Then, Jin comes up with an idea.
"Yes! What if we put up a material shielding ward with the same configuration as ...... wind shielding?"
Since wind shields move air molecules, Jin thought, it would be better to use a larger object as the target.
However, Jin comes up with an even more outrageous idea.
"......Wait a minute. If you want to move an object, there is ......<."