The prototype, which was the result of Jin's idea, showed stable ascent.
However, this is only an appearance, as Reiko's exquisite control of the aircraft's pitching, or up-and-down rotation around its left-right axis, can be seen.
"Hmmm, is it still difficult to control?"
After gaining about 20 meters of altitude, Reiko started to turn slowly.
"Oh, this one is stable," she said.
Since the left and right sides of the plane are symmetrical, it seems to be very resistant to rolling, i.e., the turbulence of turning left and right around the front-back axis.
"Hmmm, then it would be better to make the front and rear symmetrical as well.
Jin is observing the flight of the prototype while muttering to himself.
Reiko gradually reduced the prototype from a large turn to a small turn.
The 50 meter radius became 40 meters, then 35 meters, then 30 meters.
The overall width of the prototype is approximately 10 meters. It would be impossible for an aerodynamically floating plane to make a turn with such a small radius.
The prototype now tilted about 20 degrees to the right and made a right turn.
"This is about the limit of what we can do this way.
A turning radius of about 20 meters was possible.
"If you put the characteristics of a VTOL (Vertical Take Off and Landing) aircraft in front ...... of you, yes, that's right."
As if she had read Jin's thoughts, Reiko now showed the aircraft as a VTOL, i.e., stationary in the air, and then slowly changed direction.
"Yes, this way I can change direction on the spot. ......Good."
Jin waved his hand and motioned for Reiko to land.
The prototype landed about 10 meters away from Jin.
"Reiko, you did a good job."
"Yes, father."
Thanks to you, I found out some of the problems," he said.
But first, it was time for lunch.
"Brother Jin, dinner!"
Erza came to call him.
"Yes, okay."
Jin asked Smith to bring the prototype to the workshop, and followed Elsa to the laboratory cafeteria.
Lunch that day was sandwiches.
Ham, vegetables, tuna salad, eggs, ham cutlet, etc.
When I finished eating, Elsa asked me, "How are you doing?
"How are you doing? I'm doing fine."
"Well, the first half of ...... wasn't so good. I tried another prototype, but I think that one is better.
"Yeah. I'll check it out later.
"Yeah."
After quenching their thirst with Citran juice, they each go to finish their unfinished work.
Jin goes to the workshop and Erza to the reference room.
* * * * * * * * * * * * * * * *
In the workshop, Jin stands in front of the prototype,
"Well, let's fix it up a little bit," he says.
He said, and then he clapped his right fist and left palm.
"Father, what part?"
Reiko asked.
"Yes, I'm trying to make the front and back symmetrical.