Read I Was Reincarnated as a Poor Farmer in a Different World, so I Decided to Make Bricks to Build a Castle

638 - - Four Feather Development Secrets

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　Some time has passed since I built my first magic airship.

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　Looking up at the sky, I suddenly remember that time.

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　The world of the god Aisha was floating high in the sky by a stone called a floating stone.

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　I succeeded in reproducing the floating stones from my magical memory, and I also succeeded in making Vulcania and others float in the sky.

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　Then, I made a magic airship by applying it.

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　I was able to obtain additional buoyancy and propulsive force by creating a fuselage part that always floated by means of a floating stone, and by turning the propellers on both wings using the magic circle technology of magical weapons that can be manipulated with one's own magic power and will.

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　As a result, the magic airship was capable of carrying a large number of people at high altitudes at high speeds.

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　In creating this magic airship, I naturally used the knowledge I had acquired in my previous life.

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　For example, the shape of the wings to be buoyant, the propeller to be rotated to fly, and the fuselage to be aerodynamic.

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　Therefore, the magic airship was completely like a large propeller-driven plane.

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　However, airplanes were not the only propeller-driven aircraft that flew in the sky in previous lifetimes.

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　There were other useful things as well.

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　They are what are called drones.

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　It has a structure not at all similar to that of an airplane, and can fly by turning its multiple wings independently.

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　When I was building the magic airship, I had been considering the possibility of making this drone as well.

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　Of course, I do not have a deep knowledge of drones.

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　I only had a vague idea of its shape and how it would float and fly back and forth, back and forth, left and right.

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　Normally, there is no way that I would have succeeded in making a drone based on such a little more than a cursory knowledge of the subject.

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　But there was my brother, Kyle, who I could rely on.

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　In the case of the magic airship, he left all the advanced calculations of aerodynamic drag, lift, propulsion, etc. to Kyle, and at that time, he handed over the information on the drone to Kyle and entrusted his research to him.

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　And Kyle did his best to meet our demands.

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　He managed to build a device with four wings attached to the top of the drone that could move through the air.

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　Kyle is truly amazing.

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　However, even with Kyle's efforts, the drone was never completed and had to be put on hold.

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　Why is that?

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　The reason was simple.

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　It was very difficult to operate and there was a fundamental problem of lack of visibility.

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　The four wings of the drone can lift up, stop in the air, move forward or backward, and somersault by controlling the number of rotations of each wing separately.

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　These postures are normally controlled by an electronic control system or the like built in beforehand.

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　However, such a control system could not be created even if a propeller could be made to rotate by drawing a magic circle on a spirit stone and injecting magical power into it.

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　Therefore, every time we made a drone-like machine, we had to operate it all by ourselves.

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　We had to operate it by thinking about how to change the rotation speed of the four wings like this when we wanted it to float, like this when we wanted it to maintain its attitude in the air, and like this when we wanted it to move forward: .......

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　You can see how difficult this is just by imagining it.

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　If you just do it in an empty space, you may be able to operate it slowly, but when you actually use it, you need to avoid obstacles and other operations, which is not at all what I was talking about.

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　This was difficult even with the Reed family's parallel processing.

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　The only one who was able to operate the machine was probably Kyle.

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　But even Kyle couldn't operate it completely.

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　That's because we didn't have a camera that could project real-time images.

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　Even Kyle managed to operate the unfinished drone, but when the drone flew far away or was behind an obstacle, he could not see the information around the drone.

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　In such a case, it would be impossible to operate the drone in any way.

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　The drone cannot be used without a function to send images to the operator with no time lag even in remote locations.

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　After many experiments, I had to come to this conclusion.

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　Thus, the development of the flying machine was settled on the method of manned operation of a magic airship.

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　However, this situation has changed.

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　The conditions for using drones were suddenly cleared.

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　This was due to the appearance of a virtual persona named Ai.

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　When I had asked Ai if he could predict the war situation against the Reinsatz family, he had said that he needed to understand the topographical information.

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　In order to grasp the terrain, I put Ai on a magic airship and had him observe the ground from the sky as if he had a bird's eye view of it.

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　At that time, Ai said to me

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　I want to learn how to fly a magic airship.

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　The eye has a learning function.

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　If one Eye becomes able to fly a magic airship, any individual will be able to learn how to fly it in the future.

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　I decided to let Ai pilot the airship, judging that this would save time and effort in training pilots, which would be a considerable advantage.

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　At this time, there was something else that I requested from Ai besides the terrain assessment.

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　That is, I asked her to observe the weather in various regions and see if she could predict the weather in the future based on the results.

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　It worked to some extent.

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　But in order to continue to forecast the weather continuously, you need to keep observing the weather in each area.

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　And since we did not have a specific observation base, we had to keep flying around the sky at all times to make observations.

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　At that time, the idea hit me.

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　We wondered if it would be possible to have Ai pilot the drone that we had made on a trial basis.

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　Once Ai learns how to fly the drone, she will have no trouble handling it.

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　The eye itself had a good chance of becoming a control system.

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　And most important of all, the drone itself could carry the "Eye.

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　This is because the Eye is a virtual personality created by Kyle, and does not exist in reality.

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　The main body of the Kaiser Valkyrie resides in the head of the Kaiser Valkyrie, and the Eye, which is now in the form of a woman standing next to me, is merely a spirit stone used as a deity's vassal, with a magic circle drawn on it to control it remotely.

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　In other words, there is no restriction that Ai must be humanoid.

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　If it is possible to move a humanoid dependent, then it is also possible to move a drone by installing an eye in the drone itself.

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　And the Eye, which can move humanoid dependents at will, can grasp the situation around it even when it is used on a drone.

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　Aisha, by the way, was also able to operate her yorishi-yorai even when she was far away from the main body of the statue, as long as it was limited to the temple.

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　Perhaps she can grasp the situation around her by using her magical power or something, without using the human eye organ.

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　And could it be that the virtual persona "Eye" can do the same?

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　This is currently under study, and if it can be clarified, there may be a possibility to create a visual device.

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　In any case, a new spirit stone was inserted into the drone test drone left in the warehouse in Vulcania, and a magic circle was drawn on it for Ai, and Ai was able to control the drone.

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　She is now able to see wherever she is and fly around at high speed without hitting any obstacles with her skillful piloting technique.

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　And he was using it to fly to various places to forecast the weather.

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　This also led me to the idea of building up a new air force.

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　The use of drones piloted by the Eye, which I named the Four Wings, as a weapon.

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　This was made possible by simply attaching a magic gun to the main body of the drone.

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　Like magical weapons and yorishiro, the magic gun is a weapon based on the magic circle technology obtained in the East.

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　The magic circle in this magic gun fires bullets made of hardened bricks.

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　This means that it can attack at any time without any load such as a magazine, as long as it is replenished with magic power.

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　Normally, the four wings fly in the sky to forecast the weather.

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　However, they have turned into something dangerous that can be used as a weapon at times.

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　From their tiny flying devices, they can unleash deadly attacks.

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　It is now attacking the most powerful and renowned dragon knight squadron.

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　Flying dragons are indeed a menace.

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　However, they have not been able to keep up with the movements of these four wings.

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　This is because flying dragons originally fly by flapping their wings, so they cannot change their trajectory so finely.

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　However, drones are different.

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　Drones that do not carry people can move freely in the air.

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　There is no such thing as a person falling or a blackout caused by G-force due to the blood flow problem in the brain caused by the drone's sudden turns.

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　They fly around the dragon knight and attack him with their magic guns, as if they are depressing insects clinging to his body.

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　It seemed that the attack ability of the magic gun did not do much damage to the scaled flying dragon.

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　However, they are not unscathed.

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　The flying dragons gradually accumulate damage from the attack of magic bullets with unlimited number of bullets.

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　But in fact, the knight riding the flying dragon could not be safe.

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　It has already been proven in the battle against Reinsatz's army that magic guns have a certain effect against knights.

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　Thus, the pride of the Resolute Kingdom's army, the dragon knights, were shot down one by one by Barca's new force of four wings.

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