"And fuel, ask for some more maneuvering." Qin Feng shouted over the radio.

According to the pre-specified actions, Qin Feng has already done it again, it is absolutely unbelievable that a modified fighter made so many maneuvers during its first flight, and at the same time, the fuel consumed by this aircraft in flight is also controlled at a considerable level, and until now, there is still fuel left.

Qin Feng's request was immediately answered, so Qin Feng continued to fly in the sky for ten minutes before aiming at the runway and landing, and when Qin Feng landed, the people around him surrounded him.

Qin Feng has seen this scene more than how many times, sometimes it is to offer flowers, sometimes it will be lifted up by everyone, and this time, after Qin Feng came down, he flew directly in front of Tu Lao, looked at Tu Lao and Professor Sha, and said: "This plane is the aircraft that our troops really need, I ask to become a test pilot of it in the future, and I can continue to test fly it until this aircraft reaches the state of service!" ”

All kinds of maneuverability, compared with the previous Jian-7 has been reborn, if the pilots fly this kind of fighter, they will be more confident to defeat the opponent, and now Qin Feng is quite excited.

"yes, this is the one we need most in our Air Force." General Lin said: "Tu Lao, Professor Sha, our Air Force, we are looking forward to our aircraft reaching service status as soon as possible, how many months will it take for this aircraft to test flight?" ”

The improvement of the J-7 by the 132 factory is becoming more and more proficient, even if it is merged with the 611 Institute, the improvement of this aircraft still does not use the technical strength of the 611 Institute, as long as it is enough to solve it yourself, and now, in the face of General Lin's question, Tu Lao sighed: "A few months, it is estimated that it is enough, you give us a little more time." ”

The Air Force's urgent need is a sign that its design has been successful, but it may take some time for the aircraft to reach service status.

"What, does it still have complex technical issues?" General Lin asked.

General Lin is not a layman, he knows that it takes a long time for an aircraft to go into service from its first flight, and at the same time, General Lin also knows that the improvement of the J-7 by the 132 factory is already perfect, and the test flight of this aircraft should be very soon.

Are there serious and complex technical problems?

"Yes, we are only the first flight now, and we will increase the speed, altitude, payload and so on in the flight test, our aircraft, the wing is new, due to the increase in wingspan, so, it may bring a tremor problem, which is also a focus of our future test flights."

The emergence of this aircraft, greatly improve the maneuverability of the aircraft, the wing is a necessary improvement project, compared with the original aircraft, this aircraft has increased the wing area, increased the wingspan, reduced the sweep angle of the outer wing, from a single plug-in to a double plug-in, this series of improvements, have brought a new problem, that is, anti-flutter.

Any machinery will vibrate, strong vibration, or even resonance, may have a huge impact on the entire project, J-8 once caused the plane to catch fire because of this resonance.

The wing of the J-7 is also facing this problem, and some experts have commented before: "You just replace the wing with a steel plate, and you also want to vibrate."

In the research and development of the whole project, the problem of anti-flutter is a difficult hurdle, the first review did not pass, so that many comrades were shaken, but in the end, the West University of Technology persevered, after repeated in-depth analysis, rigorous scientific calculation and synthesis, groped a new program, they strengthened the torsional rigidity of the middle and outer wings, appropriately reduced the bending stiffness of the wing, and solved this problem theoretically.

However, theory is theory, and the actual test flight is also the actual test flight, and if the flaws of the theory are found in the test flight, then more time may be wasted.

Everyone is prepared for this, and this may be a key obstacle.

General Lin nodded: "Yes, any small problem must be taken into account, so that you can be targeted." I believe that everyone will be able to overcome all kinds of technical problems with this aircraft, and our Air Force can continue to wait for this project, and we are not afraid of being late. ”

Qin Feng was on the side, listening very seriously, that's right, compared with the previous improvements, this time it is more thorough, it is an improvement of the aerodynamic layout of the aircraft, this flutter problem is an important aspect, I just flew it, I seemed to feel this, in the future, this should be paid close attention to.

This will also be the problem he will face in the future, looking at the wings of the double triangle, Qin Feng made up his mind, no matter how much effort he put in and how much risk he took, he would fly this plane out!

The first flight celebration of the J-7E was very lively, but just after hurriedly attending the ceremony of the first flight celebration, General Lin pulled Qin Feng and secretly left the scene.

This time, let's come over, not only to participate in the first flight of the J-7E, but also more important projects!

"General Lin, where are we going?" Qin Feng looked at General Lin who was in a hurry, his heart was full of curiosity.

And General Lin is still selling Guanzi: "You'll know when you arrive." ”

When he got closer, Qin Feng couldn't help but be surprised: "There is nothing in this factory." ”

Qin Feng is very familiar with the factory, although the factory is now constantly producing J-7 fighters, there is generally a special workshop, this plant here was originally used as a raw material plant, but because the production of the factory is relatively compact, many raw materials are directly sent to the production line, and the current plant is vacant.

There's probably nothing in there.

However, when he continued to get closer, Qin Feng found something unusual, this factory was said to be empty, but now, he found that the windows of the factory were hung with curtains, which covered the inside tightly, and he could also hear all kinds of sounds inside.

In the vicinity of the factory, there are also more people in the security department of the factory, walking back and forth here, indicating that there must be some secret activities in this factory.

Could it be? Thinking of something, Qin Feng immediately became excited, and General Lin was even more impatient, and almost began to trot all the way, if it wasn't for the sake of not attracting attention, he should have come over in the car.

The two of them strode into the factory, and when they saw the equipment in the factory for the first time, Qin Feng opened his mouth wide, it was so beautiful!