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> seemed to be thinking about various things.
* * * *
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"Okay, let's increase the speed. Try a left turn around the vacant lot."
After confirming that the aircraft was stable, Rohr-Eisker ordered the speed to be increased.
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The model increased its speed dramatically. About 20 kilometers per hour. About the speed of a bicycle.
"Oh, that feels good."
The model made a large left turn as it was, and from Jin's point of view, it looked good.
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（Yes, the biplane and the small Golem are good enough. This is promising. ......)
And after a few laps.
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"Carefully increase the speed and bring it up to the maximum speed. But don't overdo it.
Lower Eisker instructed.
In response, the speed of the model increased even more.
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"Oh, that's pretty fast. ...... Reiko, how fast?"
"Well, ...... it's going 38 kilometers per hour."
"I see. ......Well, it won't be a simple quadrupling of speed, but 50 kilometers per hour seems solid for a real plane."
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Biplanes have high aerodynamic drag, so the higher the speed, the more disadvantageous it becomes.
"If we want to be safe, the upper limit is about 60 kilometers per hour.
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This value of 60 km/h is based on the maximum speed on ordinary roads when Jin was in modern Japan.
In reality, however, there are few roads with a maximum speed of 60 kilometers per hour, and most roads have a maximum speed of 50 kilometers per hour or 40 kilometers per hour.
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"You're getting ahead of yourself, Jin-dono. ......"
Roar Aisker overheard my conversation with Reiko,
"No, that's not true. It is important to look at the model and predict how the finished product will look like.
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Jin said to me, and I understood.
"The larger the model is, the longer the period of shaking becomes, so we need to take that into consideration as well.
"Yes, that's true."
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On a different topic, it is said that if a beginner wants to practice flying a radio-controlled airplane, it is easier to get used to it if the plane is of a certain size.
If you practice with a smaller one because it costs more, it will take more time to get used to it .......
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Jin himself could not own such a model plane for financial reasons, but he had seen his acquaintances flying them on several occasions, and he was told about their knowledge.
He told me about his knowledge of flying, "But the hard part is that you can't simply multiply the speed by four.
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I heard that the resistance of air and the constants of hydrodynamics are available at ......, but I was frustrated that I didn't know that much about them since Jin also graduated from high school.
* * * * * * * * * * * * *
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The test flight, which took about an hour in total, was successfully completed, with a landing and check of each part in between.
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"That's not bad."
Loa Eisker is in a good mood.
"It's a great success!"
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Zora Himmel is in an even better mood.
"Yes, yes, it was worth it!
Rasnat Heilbronn was also happy.
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"It will be fun to fly in the sky with the plane we built.
Eira mutters to herself.
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< would probably make him want to try other genres.
After all, Jin himself is a man who dabbles in all kinds of genres.
"If you just want to fly, I brought my blow floater," he said.
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I say,
"Oh, that's cool. I'd like to try it!
He replied, "Yes, I'd like to ride on it!
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Then the members of the Aeronautical Laboratory also replied,
"Oh, yes, I'd like to see your plane, too!
The words, "Oh, yes, we would like to see your plane, too!
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Jin thought that this would be a good opportunity to unveil the new aircraft. Jin checked the time,
"It's only 10:30. Then, just for a minute.
He asked those who were interested to go to the airfield where the was parked.
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It was a short distance to the airfield, but we all hurried at a brisk pace and arrived there in about 10 minutes.
"......Let's get the out of here. ...... Hope!"
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"Yes, Master."
Hope, under Jin's direction, immediately boarded the < and fired up the blow engine.
Then, releasing the support rack by remote control, it floated slowly and landed on the airfield.
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"Oh!
That's amazing!
"That's just like Jin-dono!"
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"Well, this is the . By arranging the circular wings like this, we were able to improve stability and maneuverability.
Jin explained the to the assembled engineers.
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