Working Prophet.

Chapter 36 The first flight of the green field
With the rapid rotation of the propeller, the drone slowly rose from the grass, flew to a height of about ten meters in the air, and stopped there.

Li Yu held the remote control in his hand, pushed the joystick lightly, and tested whether the aircraft's lifting and horizontal displacement functions were normal.

The signal transmission function between the UAV and the remote control does not rely on the Internet, but is realized through its own antenna. Due to a large amount of electromagnetic interference and environmental occlusion in the city, the effective transmission distance will be greatly shortened.

Taking the DJI Mini 3 Pro in the hands of Li Yu as an example, the official strong interference flight distance given by the FCC standard is about 1.5 to 3 kilometers.

In the outer suburbs and the seaside, this distance is increased to 7 to 12 kilometers.

As for the green field, there is no wifi, bluetooth or other signals to compete with drones for bandwidth, which can be described as a perfect flying environment.

Of course, the disadvantages are not without. Without the assistance of GPS, it is difficult for drones to hover precisely, and functions such as planning routes cannot be used, which greatly increases the risk of bombing.

However, Li Yu has no choice now. He turned off the obstacle avoidance function of the drone, and operated the drone to rise another 100 meters to ensure that it would not be easily spotted by the people below, and then controlled it to fly towards the castle. .

At night, the pleasant night wind that blows from time to time makes the drone sway and drift in the air. At such times, Li Yu also uses the stick to correct the moving direction of the drone.

Fortunately, even if the visual system is difficult to locate due to the surrounding dark environment, and the GPS is lost, the aircraft will still provide a basic attitude mode to help stabilize the body shape and greatly reduce the risk of crashing.

In the end, Li Yu controlled the drone to cross the high wall of Teacup Castle without any danger, without alarming the army outside the city, and the people in the castle knew nothing about the arrival of this unexpected guest.

Even if someone raised his head inadvertently, he would probably only think that it was just a strange bird passing by high in the sky.

Li Yu checked the guards on the city wall one by one through the real-time images sent back by the camera.

Miss Rabbit is also by his side, responsible for identifying Alfred from it.

As Li Yu adjusted the zoom camera equipped on the drone, each face was zoomed in and zoomed in, and Ilea, who was watching, let out exclamations again and again.

But Miss Rabbit is already a little numb at the moment.

Tonight, Li Yu first helped her wake up the sleeping ancient spirit in the necklace, and then summoned the metal divine bird, which flew into the sky and escaped from the ground, and with the help of the divine bird's eyes, he could see everything around him.

The girl was in shock almost all the time, even if Li Yu suddenly yelled at me, my grandson, and then stepped on the auspicious cloud, and made a somersault, Miss Rabbit would not be too surprised .

At most, they shouted from below, Great Sage, quickly put away your supernatural powers!

The half face not far away was no better than hers. When the drone took off, Jude seemed to be out of his body along with him.

He stood there staring at the little black spot in the air, motionless.

It was like a human cub seeing an excavator working for the first time, unable to look away at all, and kept mumbling, "There must be a soul in there! Yes, there must be a soul!!!" and other nonsense.

Li Yu controlled the drone to circle over the castle, but he couldn't find the old knight.

Ilea volunteered and said that she could lead the way into the castle, but Li Yu gave up this idea after thinking about it.

After entering the stone castle, due to the barriers of those thick stone walls, the signal will definitely deteriorate, and the risk of bombing the plane will also increase. In addition, in the cramped and narrow space, it is difficult for the drone to avoid any accidents.

So in the end Li Yu chose to push the joystick and ordered the drone to descend in front of a soldier.

When descending to a height of almost 20 meters, the noise from the four pairs of propellers woke up the dozing soldier.

He rubbed his eyes, looked in the direction of the sound, and then stayed for a while.

In order to let him see the appearance of the aircraft better, Li Yu controlled the drone to descend some heights.

As a result, the guy screamed, threw the spear and shield in his hand on the ground, and resolutely left work early, and he didn't know where he went.

Li Yu had no choice but to let the aircraft find another soldier on the city wall.

This man was a lot more courageous, and he drew out his weapon and kept waving it, as if trying to scare away the little thing that could fly without wings in the sky.

Li Yu was also forced to appreciate his combat skills for a while.

Fortunately, when he realized that his attack distance was probably not within reach of the drone, he finally made the right choice. While being on guard, he called a companion to inform the people in the stone castle.

Just when Li Yu relaxed his vigilance, an arrow flew out from nowhere, and went straight to the drone in the sky!

Caught off guard, Li Yu didn't have time to do anything. In the end, a gust of evening wind just happened to save him, and the drone was drifted a short distance by the gust of evening wind.

However, he inadvertently avoided this fatal arrow.

Without hesitation, Li Yu immediately raised the height of the drone, and continued to move irregularly in the air, so the next few arrows failed to pose any threat to the drone.

After waiting for a while, an old man who looked about five or sixty years old in full armor came out of the castle and climbed onto the stone wall.

He narrowed his eyes and carefully looked at the thing in the sky.

And Li Yu was also watching him through the camera of the drone.

The visitor was tall and muscular, with firm eyes, and although there were wrinkles on his face, he did not look old. His silver hair was meticulously groomed by him, and the armor on his body was also wiped clean.

But unlike the gorgeous looks that many nobles use to set off their heroic appearance, the armor is obviously old for a certain period of time. If you look closely, there are many potholes in many places, and it faithfully records the previous scenes for its owner. He fought fiercely, and the rabbit emblem on his right arm showed his allegiance to the family.

He also held a yew longbow in his hand, nearly two meters in length.

Receiving a battle arrow from the attendant beside him, the old knight bent his bow and set the arrow, the long and narrow dagger-shaped arrow glowing coldly in the night.

But in the end he didn't shoot the arrow.

After putting down the longbow in his hand again, he gestured to the surrounding archers, asking them to put down their weapons as well.

Those people looked at each other, and in the end they all followed orders.

Li Yu also turned to look at Ilea, and the girl nodded to him, "That man is Alfred, my guardian knight."

Upon hearing this, Li Yu controlled the DJI Mini 3 Pro, carrying the ruby ​​hanging below and Ilea's handwritten letter to the ground.

　Thanks for the reward of Buzao 233 and other children's boots
　　
　
(End of this chapter)