The No. 007 J-10s took off closely against the runway. When they flew over the valley, their height had almost not changed, about three meters higher than the runway. This is a very difficult altitude to control at the take-off speed, especially for fighters like the J-10.

Li Zhan carefully held the joystick to keep the fighter flying flat, and carefully controlled the speed. He could neither be too fast nor too slow. If he was too fast, he would miss the turning node. If he was too slow, he would be at risk of stalling. At the current airspeed, the fighter was swaying slightly left and right, like a child who had just learned to walk but wanted to run. This is because the airspeed was infinitely approaching the minimum speed at a low altitude.

This is undoubtedly challenging.

"The steering node is 1,500 meters." Zhang Wei reminded.

Li Zhan replied, "I understand, one thousand five hundred meters."

Obviously, if the airspeed is not controlled, the fighter will miss the steering node if he takes off without paying attention. He has no choice but to pull high and fly south. He also has to pull more than 1,500 meters to cross the mountain in front, which just invades the route on the side of the tourist airport. The route on the side of the tourist airport is 1,500 meters high, with 300 meters as an airspace layer, and there are civil aviation routes to several airspace layers upwards.

"Turn 270, repeat, turn 270, tower, I'm going into the mountain." Li Zhan turned 90 degrees to the right, and his course changed from 180 degrees to 270 degrees, and reported to the tower at the same time.

The ground radar will soon lose the signal of the No. 007 J-10b combat trainer aircraft. Tang Guozheng reminded, "I received it, don't do it recklessly. If you don't have it, just raise the height. The tourist airport has been coordinated. Before 1030, this airspace belongs to us, and it's over."

"clear!"

...

On the other side, Zhao Long took off while operating the drone and said to Wang Hu, "Have you seen a ray of sky? Visibility is not good. If you use a telephoto lens to shoot here, it will definitely not be good. With a drone, this problem will not exist. I can fly in front of you and come slowly, find the angle and take photos slowly."

"Let me play for a while." Wang Hu looked at the drone that took off steadily and buzzed towards the valley.

Zhao Long said, "What's the hurry? This is not something you can learn in a short time. When I finish taking the photo, I find an empty place for you to practice your skills first."

"I haven't played with the remote control plane before, what's the difficulty?" Wang Hu was dissatisfied.

The two of them talked back without saying a word, and the drone slowly flew into the elliptical valley to a ray of more than a thousand meters away under Zhao Long's control.

...

"The tower, I want to try to pass through the first line of sky, and it's over." Li Zhan reported.

Tang Guozheng did not hesitate too much and replied, "You can grasp the holes, and be safe first, and it's over."

"I understand." Li Zhan breathed a sigh of relief, fearing that Tang Guozheng would change his mind temporarily.

Crossing the first-line sky is a planned plan, but the timing must be discussed with the tower commander and decided. You can pull it up before crossing the first-line sky, but it requires a climbing action with a large elevation angle. This is not very difficult for an unloaded fighter. If it is a heavy load, it will be difficult. The space of the first-line sky is completely enough for the fighter to travel through. All you need to pay attention to is the possible crosswind.

At least it has more heights than crossing Tianmen Cave.

Zhang Wei said, "There is less than fifty meters left and right, so you have to be careful."

"It takes five or six seconds to run for a 50-meter sprint. This distance will not have a big impact at all, don't worry." Li Zhan said confidently.

When flying in intensive formations, the spacing between fighter jets is generally within ten meters, and it is obviously very tolerant to have a spacing of fifty meters from the mountains on both sides. Every fighter pilot has received training in all formations, and intensive formations are one of the subjects that are often trained. Some skilled and brave pilots even control the spacing to about five meters, almost catching up with the Bayi Flight Performance Team.

"How is the weather like the tower?" Li Zhan asked.

Tang Guozheng quickly checked the latest weather and replied, "The weather is very good, the low air flow in this venue is stable, it's over."

"Received, the airflow is stable. You can see it with two kilometers away from the first line of day. It is finished with the last turn." Li Zhan reported.

From east to west to first-line, you need to make a southward turn of about 120 degrees, which is also a difficult problem. Flying in the canyon itself has many risks, and it is obviously more difficult to encounter sharp turns. However, this is nothing in Li Zhan's eyes. The sharp turns in the Beiku Mountains canyon have more and smaller angles, which Li Zhan has long been accustomed to. At this time, he was driving the J-10s combat trainer with better performance. Facing a much easier turn than the Beiku Mountains canyon, Li Zhan was walking in the garden.

Li Zhan smiled and said, "Old Zhang, I'm sure you're looking at it. It looks scary when you travel through the front line of the sky, but you can sit down with peace of mind, everything is under my control."

"You should be careful, J-Ten is very expensive." Zhang Wei said, unable to help but feel a little nervous.

Li Zhan smiled and stopped answering, pushed the throttle lever slightly and turned sharply south. When the fighter turned, the airspeed would drop because the windward area would increase immediately. To maintain the airspeed, the thrust must be increased accordingly. This is a very important consideration for the pilot's grasp of the relationship between the throttle and the flight attitude. It is not appropriate to have more accumulators or less.

Zhang Wei clearly saw that the speed displayed by the airspeed meter did not change much, and the number displayed was only about two knots swings, which convinced Zhang Wei. You should know that Li Zhan didn't take much time to drive the J-10, and it was a perfect plan that when he was modified and trained in the Great Red Eagle Division, he flew for more than a hundred hours, and most of them were taken away.

"There is a ray of sky ahead, be prepared." Li Zhan said.

At this time, the ground radar of the Zhongnan Station tower could not see the No. 007 J-10s, but there was no problem with communication, so the call between Li Zhan and Zhang Wei could be heard.

Zhang Wei said, "I'm ready, it depends on you."

"Walk."

Li Zhan suddenly raised the airspeed, and the fighter reached a speed of 666 kilometers per hour in a very short time, running towards a ray of sky like a human eye. Zhang Wei watched the mountain change rapidly in front of him, and the nose seemed to be hitting the mountain. His heart was in his throat, and he had never seen this formation. You must know that he hadn't boarded the plane for many years, so he flew with him for several hours a while ago, but it was all like an old man flying like a walk, so he had never had such violent movements.

It's much more exciting than riding a pendulum roller coaster or something.

The No. 007 J-10s plunged into the first ray of heaven. Zhang Wei seemed to hear the sound of a whirring wind in his ears, and the cliffs on both sides almost flew over his cheeks. The length of the first ray of heaven was only a few hundred meters, which was a blink of an eye for the fighter jets with a speed of more than 600 kilometers per hour.

However, in the blink of an eye, a sudden change occurred.

When Li Zhan saw an UFO at one o'clock, his hands and feet began to quickly squeeze the rod and rudder. The UFO seemed to be hovering in the air. The glass at the top of the canopy cover of the No. 007 J-10s was almost rubbing against the UFO. Zhang Wei's eyes were also very good. He saw the UFO shooting at the top of his head. When he subconsciously shrank his neck, he had actually bumped into it - if it hit it.

In an instant, Zhang Wei's most obvious feeling was that the posture of the fighter was suddenly changed, the engine made a shrill roar, the elevation angle of the fighter instantly increased, and then the fighter had a significant rapid deceleration, and he wanted a cobra to maneuver. Seeing that the fighter was about to hit the cliff, the nose of the aircraft fell rapidly and returned to its previous flight posture again. At this time, the fighter rushed out of the sky in one breath.

The whole process happened in just two seconds. After more than ten seconds, Zhang Wei's cold sweat came out, and his voice trembled a little, "What was that just now? A bird? A bat? Or what?"

"Your bird bat is that big, it is obviously a miniature drone. Let's talk about it later. The camera on the helmet must have been taken." Li Zhan was not afraid of almost a collision in the air, but because a miniature drone appeared in the deep mountains where birds were not shit. The first thing he thought of was that there were criminals spying on military information.

Security and confidentiality are a big deal.

"Tower tower, cave-turning report, micro-drones were found in the first line of sky, and drones that were dozens of centimeters long and wide should be one of the cameras. There is a mountain road on the north side of the canyon, and there may be criminals. It's over." Li Zhan quickly reported and gave his own judgment.

Tang Guozheng was shocked and immediately thought that it might be the criminals who were spying on military information. Even though Zhongnan Station has been a spare tire for more than ten years, it is also a real military important place. It is a restricted area where local personnel must not cross the line, and it is absolutely not allowed to conduct shooting and other activities to obtain information.

Not long after Zhongnan Station was re-opened, criminals came over with the smell, which means that the security and confidentiality situation of the station is very serious. As the main person in charge, Tang Guo has absolute leadership responsibility - your security and confidentiality work has not been done well!

"Dongdongkeng, are you going back directly? It's over." Tang Guozheng asked.

Li Zhan said, "Tower, I will return the same way. If I move fast enough, I should be able to find some clues, but I have to fly close to the north side of the canyon. You need your approval, and it will be done."

Tang Guozheng thought about it for more than ten seconds and replied decisively, "Hongkeng, I approve your actions. Be sure to pay attention to safety. You can use any airspace at any time, and it's over."

"I understand the hole!"

Li Zhan quickly pulled up and then turned around with a rapid small radius, turning back from south to north, and flew towards the first line along the route when he came.

Li Zhan and Zhang Wei were shocked, while Zhao Long and Wang Hu were almost scared to pee their pants. They only saw a shadow flashing by on the screen, and then the drone shook violently and twisted downwards. Zhao Long took a lot of effort to get the drone to resume its flight posture before the crash.

"What the hell is that?" Zhao Long's lips were trembling, "What a big bird!"

The drone is tens of thousands per person. No matter how rich he has, he can't fall and play with it. Besides, he has only been flying for the first time, so of course he was so scared that his heart was about to jump out.

Wang Hu was calmer, frowned and said, "It seems like it's an airplane?"

"You are fine, how could it be an airplane? How could it be a drone? How could it fly to the first line of the sky? Can it fly there? It looks like a big bird." Zhao Long refuted.

Wang Hu was uncertain and said, "It looks like an airplane or a fighter. Yes, wasn't there a rumbling sound on the mountain just now? Maybe it's the sound of the fighter engine."

"No?"

Zhao Long began to be scared. If it was really a fighter and it fell down because of his drone...

He didn't dare to think about it anymore, so he said calmly, "You will know when you fly back and take a look. You must have taken the photo. At that time, I just started the continuous shooting mode and I will definitely be able to see it clearly."

Zhao Long nervously controlled the drone to return, feeling very up and down. Wang Hu was also worried, afraid that he would really encounter a fighter plane and cause the latter to crash. This would be a great crime and he might have to accept legal punishment.

They are not ignorant people, on the contrary, they have been through regular higher education, and some basic common sense is very clear. For example, hitting a bird can cause a huge plane to crash, such as flying kites around the airport, etc., will be caught by the police station, etc.

Although the drone was controlled by Zhao Long, he took Zhao Long here and was considered an accomplice.

When Wang Hu thought of the iron windows of the prison in the film and television works and the dark life inside, he felt cold all over. He finally became scared and said, "Why don't we run away? No one knows to run away quickly. Even if he finds it in the future, he can say he doesn't know. There is no law that does not allow drones to be played in the mountains."

Zhao Long calmed down first and said, "What are you running for? I don't know what the situation is. Don't worry first, wait until the drone comes back to see the photos before talking. Maybe you've read it wrong, it must be a big bird."

"It can't be a big bird." Wang Hu contacted the upper and lower levels and recalled it more and more. It was an airplane. He said in a deep voice, "Just just now, it was the sound of the aircraft engine. The passenger plane would not fly so low or fly into the mountains, but the opportunity for combat. You forgot that there was an air force airport not far northeast. When we were young, we rode our bicycles up the mountain to see the plane. You forgot that the soldiers chased them with guns?"

Zhao Long was not sure again, "No, right? The airport has not had planes for many years, and it cannot be a plane. There is a tourist airport to the south, and the sounds you hear are probably coming from there."

"What sound can be so far if it's more than twenty kilometers?" Wang Hu said with his eyes wide open.

He is talking about the distance. In fact, the straight-line distance of the tourist airport is about 12 kilometers. The sound produced by the aircraft flying supersonic at high altitudes can be fully transmitted to this distance. However, it is not the sound of the engine, but the sound formed by the friction between the aircraft and the air after breaking through the sound barrier.

"Don't make a noise! ​​The plane came back soon, and everything was clear after seeing the photos." Zhao Long said.
Chapter completed!