Liaoshen Aircraft Factory. Assembly workshop!
When Zhou Yang and Gu Zhenhua arrived at the assembly workshop, they saw a brand new huge fighter plane!
The fighter in front of him is completely different from the previous J-8 fighter, especially the front face. The changes are too great. If Gu Zhenhua hadn't said that this was the J-8 fighter, Zhou Yang would not have dared to admit that this was the J-8 fighter. improved model.
Different from the rough appearance of the J-8 prototype, and also different from the air intake design on both sides of the J-8-2 that Zhou Yang is familiar with, the air inlet of this fighter is a binary adjustable multi-wave system hybrid compression type. Nine design concepts.
As a result, this makes the space in the nose of the fighter aircraft larger. Not only can larger radar and avionics systems be installed, but the driver's cockpit does not have to be as cramped as the original J-8 aircraft.
All in all, the appearance of the fighter plane in front of me is still very good.
At this time, many staff were busy next to the fighter plane, apparently inspecting the fighter plane.
Seeing Gu Zhenhua, Zhou Yang and others approaching, a middle-aged man with a greasy face immediately ran over and said, "Comrade Lao Gu, Zhou Yang, are you here?"
"Old Wang, how is the situation?" Gu Zhenhua asked.
"The problem still exists, and it is even more serious than we imagined!"
Zhou Yang frowned and asked, "What is the problem?"
Gu Zhenhua said immediately: "After our testing, we found that the overall performance of the fighter is indeed good, but there are also some problems, two of which are more important!"
"First of all, there is a certain problem with the static instability of the aircraft. Although it is not very serious, it also affects the performance of the fighter aircraft."
Hearing this, Zhou Yang frowned immediately.
The so-called static stability refers to the distance from the aerodynamic center to the center of gravity of the aircraft. The static stability of the aerodynamic center after the center of gravity is positive, and the aircraft is statically stable; the static stability of the aerodynamic center before the center of gravity is negative, and the aircraft is statically unstable.
For example, the center of gravity of a statically stabilized aircraft is like the fulcrum of a seesaw. If the nose is one end, the lift action point is at the other end.
When the airflow makes the aircraft raise its head, the elevation angle increases, the lift increases, and the lift end will move upward, causing the aircraft to bow its head.
When the aircraft is bowed down by the airflow, the elevation angle decreases, the lift decreases, and the lift end moves downward, causing the aircraft to raise its head. this
In this way, the aircraft can always correct external influences through its own adjustments and fly more smoothly, but the price is the aircraft's poor maneuverability.
The statically unstable aircraft is very flexible because the aerodynamic center is in front of the center of gravity, but it cannot be controlled by traditional mechanical control methods because it requires a large number of fine adjustments to the rudder surface at all times.
Therefore, to design an aircraft with relaxed static stability, it is necessary to use computers to assist driving.
Zhou Yang thought for a while and said: "Static instability is determined by the different positions of the aircraft's aerodynamic focus and center of gravity. The aerodynamic focus can be changed by adding a control surface, and the center of gravity can be changed by using counterweights."
"We tried it, but it didn't work very well!"
"This problem is not big. I will study it with you later and we should be able to solve it!" Zhou Yang said.
"Hahaha, I knew you had a solution. On behalf of the thousands of employees and cadres of Liaoshen Aircraft Factory, I would like to thank you!" Gu Zhenhua said excitedly.
"Lao Gu, don't thank me all the time. We are doing everything for the country!" Zhou Yang said.
"Yes, everything is for the country!"
"What's the second problem? Let me see if I can solve it?" Zhou Yang said.
Gu Zhenhua did not hesitate and said directly: "The second problem is that during use, we found that the fuel consumption of this fighter is extremely high, and the thrust-to-weight ratio is relatively small, which directly affects its range and flight performance."
"According to previous test data, the improved J-8 has a huge body but only has a range of about 1,400 kilometers. Even with auxiliary fuel tanks, the range will not exceed 2,000 kilometers. With three auxiliary fuel tanks, the combat radius is only 800 kilometers. !”
"Furthermore, the bomb load is pitifully small. All aerial bombs combined are only 3 tons. Compared with fighter jets from countries such as the Thief Eagle and Mao Xiong, these performance indicators are at a disadvantage."
After hearing this, Zhou Yang fell into silence. These questions Gu Zhenhua said actually all pointed to the same problem-the engine!
Aviation engines have always been a weakness in the development of my country's aerospace industry. This gap cannot be made up in a short time. However, Zhou Yang has thought about how to solve this problem before, but the time has not yet come.
Thinking of this, Zhou Yang immediately said: "Lao Gu, the engine problem can be alleviated first. This is a systematic project and cannot be solved overnight!"
Gu Zhenhua nodded and said: "What you said makes sense, but we are studying whether we can develop a new aeroengine with greater thrust!"
"This can be done, but compared to aero engines, I think it is better to finalize and install the improved J-8 model first. This matter is more urgent than getting a new engine!" Zhou Yang said.
"Well, the factory also means the same thing, and we are very satisfied with the improved model of the J-8 to the present level. At least the J-8 doesn't have to worry about being dismounted!"
Having said this, Gu Zhenhua looked at Zhou Yang with eyes full of admiration and gratitude!
"Haha, Lao Gu, you are overthinking it. Even without this improved model, the J-8 project would not have been discontinued!" Zhou Yang said.
This is the famous "Eighth Master". What he has done can only be regarded as the icing on the cake. Even without his improvement plan, he can still become a legend.
However, Gu Zhenhua didn't think so. He smiled and said, "You know how to comfort people, but you don't know how we got here all these years. You are afraid that one day the superiors will suddenly give us an order to terminate our research. "
"Seriously, if it weren't for you, we wouldn't know what we would do!"
Zhou Yang did not answer the question, but smiled and discussed the problem of aircraft instability with Gu Zhenhua.
When Gu Zhenhua saw this, he didn't continue to talk about it. He knew that there were some things that he just knew in his heart, and there was no need to talk about it all the time.
In fact, what he just said was from his heart. No one knows better than him what life their project team has been having in the past few years.
To be honest, if Zhou Yang hadn't suddenly appeared, it was still unknown whether their project department would still exist.
As for the reason, it’s simple!
On the one hand, the project is not progressing smoothly. The ten years of research and development have exhausted the patience of many leaders.
On the other hand, the J-8 fighter is awkwardly positioned. You must know that the J-8 was originally designed to be used as a transitional aircraft. Almost everyone did not have high expectations for it, except for the staff and cadres of the Liaoshen Aircraft Factory. them.
Thirteen years ago, the Sixth Research Institute of the Ministry of National Defense submitted a report on the design of a new high-altitude, high-speed interceptor aircraft. The report mentioned that the Air Force needs to have a new fighter aircraft with comprehensive performance exceeding the MiG-21.
The requirements for the new fighter aircraft are that the maximum flight speed exceeds Mach 2.2, the maximum range is about 2,500 kilometers, it can carry air-to-air missiles, and it uses semi-active radar guidance.
Soon, the new fighter aircraft project was officially approved. This is the J-8.
But it is worth mentioning that there was also a fighter jet named J-9 that was approved at the same time.
Compared with the J-8, it has higher performance requirements and is the "future star" designated by the Air Force.
Although the J-8 is a new fighter aircraft, everyone's expectations for it at the time were actually not high. It was far inferior to the J-7 endorsed by the MiG-21, let alone the high expectations placed on it at the time, representing the future of the Republic's Air Force. "J-9" is just an interim product before the J-9 is finalized.
So when the J-8 is designed, you will find that this fighter is really disappointing.
In terms of appearance, it has a mediocre appearance, and there is almost no trace of curvy beauty throughout its body.
Especially the rigid fuselage always gives people an extremely rough feeling, as if it is a large skinned engine with wings.
In terms of performance, the J-8 can only be said to be unsatisfactory, with many weaknesses such as poor acceleration, weak radar, backward control, and a small bomb load.
Compared with advanced foreign fighters of the same period, there is a clear gap in its comprehensive combat performance.
All in all, there is nothing "superior" about this fighter.
But just when Gu Zhenhua and others were confused, Zhou Yang appeared.
He appeared with advanced pulse Doppler radar, which not only solved the problem of the J-8 fighter's backward radar in one fell swoop, Zhou Yang himself was also a genius in aircraft design. His improvement plan for the J-8 fighter shocked the entire Liaoshen Aircraft Factory. For heavenly beings.
After several months of modifications, they finally came up with an improved version of the J-8 fighter.
If the previous J-8 project team was confused about the future, then Zhou Yang was the light that cut through the darkness, and was also the light in the hearts of Gu Zhenhua and others...
...........
(Aircraft engine)
(Aircraft engine)
PS: Chapter 3 is delivered! Please ask for reminders for updates, please ask for free gifts, thank you all!
