"I didn't expect that the first test flight when I came back was the J-8 2 fighter." When he stood in front of this Jian-8 tanker with his flight helmet, Qin Feng still sighed.

There is no flight arrangement for the J-7 today, and after the J-7 flew yesterday, it is undergoing maintenance and analyzing the data, and it will not be possible to have a flight mission until tomorrow, so Qin Feng picked up this opportunity and flew the J-8 first.

Old Jianba, Qin Feng is also very emotional, in the past during the test flight, there were so many problems, failures, all of which were solved by Qin Feng, and now, this aircraft is finally stable and equipped with troops.

"Yes, this plane is also our most advanced at present, today, our flight mission is to fly in a two-plane formation to a distance of five meters, and then approach our air tanker for fifty meters." Lao Chang said.

The test flight is scientific, and it cannot fly to a distance of 0.6 meters as soon as it comes up, it is constantly approaching, and at the same time, since the air tanker has arrived, it is also necessary to conduct formation training with the air tanker, so there is no need to be too anxious, and the distance should be closer and closer.

"Let's go, let's take off."

In normal times, Lao Chang is a taciturn person, he doesn't talk much, and when he is a teacher, he is also meticulous, only when he is testing the flight, he can change his mood, which shows that deep in his heart, there is also a desire to test the flight, but there was no opportunity before.

Qin Feng stepped into the cockpit, and when he sat down, he felt that his vision in front of his right was somewhat obscured, and the air was heavily blocked by the oil pipe.

Many fighters can't see this tube, because they are in the form of folding, and when they are not in use, they will shrink directly to the nose of the aircraft, and they will only stretch out when they are used, even if it is a J-10, it is like this when it is designed.

However, the J-8 did not, after all, this is an attempt to refuel in the air, first solve the problem of whether there is or not, and then say, whether it is easy to use or not, whether it is beautiful or not, is a matter of the future.

Anyway, this kind of aircraft is originally used for air interception, and it is not very good at close combat, and if the target happens to hide in the blind spot of the refueling pipe, it is also impossible.

That is, shake your head more.

Qin Feng skillfully prepared for takeoff, because it was an air formation training, the plane was only half filled with fuel, so that the fuselage was lighter and the control was more flexible.

The familiar roar of the engine came from the tail, let go of the brakes, turn on the afterburner, and as before, Qin Feng operated the fighter, slid on the runway, and took off.

Wait, how did you get such a strong push back feeling this time?

Even if you add half a tank of fuel, it doesn't feel like this, unless it's a change of engine!

That's right, it should have been replaced, and now, the turbojet 13 engine on its own side has matured and is assembled on the J-7 3, and at the same time, because it was originally a modification of the MiG-21 fighter engine, it can be perfectly replaced with the current turbojet 7, and even the position of the installed bolts has not changed!

If you want to improve the performance of a fighter, the best way is to change the engine for it, J-8 changed the turbojet 13, and the performance has been improved a lot at once, if the tail is stuffed into two F404s, then it will be repaid!

Qin Feng has begun to fantasize, all of this is no longer possible because the West has closed the door, the excellent medium thrust of F404 is impossible to assemble on the J-8 fighter, and you have to expect a better engine, or look at your own, some departments are said to be engaged in turbojet 14, I don't know what the performance is.

With the swift feeling on his back, Qin Feng drove the Jian-8 and flew into the sky, and on his side, Lao Chang also took off with afterburner.

Air refueling, the biggest natural enemy is the complex and changeable airflow, so, for air refueling, the higher the altitude, the better, the troposphere in the airflow is complex and changeable, the stratosphere, that is, the wind is calm, where refueling is the best.

However, the altitude cannot be increased indefinitely, because with the increase of altitude, the temperature will be lower and lower, the fluidity of aviation fuel at low temperatures will become poor, and at the same time, the fuel pipe will also become brittle because of the cold, and it is absolutely not possible at an altitude of 20,000 meters.

According to the international standards, the first thing to study is to refuel in the air at an altitude of 10,000 meters, after the two fighters take off, they are climbing upward, it can be found that after the replacement of the turbojet 13, the climbing performance of the J-8 fighter has also been greatly improved.

"001 attention, the height is ten thousand, the speed is eight hundred, and the plane is leveled."

"001 Roger."

Qin Feng climbed to an altitude of 10,000 meters in one go, leveled the plane, and behind him, Lao Chang had already come up.

Now, it's time to fly in formation.

The two planes were slowly approaching, approaching, at this time, because Qin Feng took off first, and Lao Chang was behind Qin Feng, so Lao Chang approached Qin Feng first.

On the J-6, Lao Chang has practiced many times, and now on the J-8, Lao Chang is getting closer a little bit, little by little, and the specially developed equipment for air refueling is displayed on the dashboard, at a distance of 50 meters, 30 meters, and 20 meters.

Ever used an excavator to open the cap of a beer bottle? What is needed is the extreme softness of the operator, the force should be moderate, even a little more will not work, and now, it is definitely softer than this stunt.

The operating stick in the hand, a slight displacement, will bring about a change in the state of the fighter, now, the old hand, almost is slowly kneading the operating stick generally, only with a magnifying glass, can you see the displacement of the operating stick, the closer you get, the slower the movement of the hand, a little careless, there will be a terrible accident.

Closer, closer, to ten meters!

At this time, it is no longer a technical problem, but a psychological problem, you can see all the details of the plane in front, such as the emblem on the plane, the logo, such as the slight shaking of the tail rudder, and even, even the rivets on the plane can be seen, at this time, there will be an indescribable fear in the heart, the body's instinctive reaction, is not to get closer, it is about to collide!

On the J-6, Lao Chang has already practiced, at this time, he has no fear, only excitement, watching the displayed number gradually become smaller, there is a sense of accomplishment, almost no pause, it is close to the distance of five meters.

For him, the main thing is to be familiar with the fighters, and now, after several sorties, he has become quite proficient.

Even, he was confident that he could continue to fly forward, however, the scientific test flight had to be carried out step by step, and at a distance of five meters, he continued to hold it for a minute, and then, letting go of the throttle, withdrew from the dense formation.

"Okay, now it's my turn." There was also a kind of excitement in Qin Feng's voice.