General fighters can withstand 7-8G overload, and the performance is already very good.
Can the fighter plane withstand such a large overload?
"We have discussed the matter of lowering technical standards before, so we have nothing to say.
Yang Gang was displeased.
The J-10 is a third-generation aircraft!
The fly-by-wire system is out.
........... ask for flowers 0 ...........
What I want is to fix the problem, not lower the condition! "
Because the structural strength does not meet the design requirements, the requirements cannot be reduced in the end, which will affect the maneuverability of the produced J-10.
"If the problem of the large press is not solved, there is nothing we can do. We must manufacture the whole beam..."
He Guosheng looked at Yang Gang and said through gritted teeth.
This matter, Yang Gang is also clear.
"Mr. Yang, according to the method you provided, we carried out the trial production in stages, but it failed to meet the requirements... This is already much stronger than the overload of active fighters.
He Guosheng's words did not question Yang Gang.
Instead, I hope Yang Gang will lower his requirements.
"Yes, Mr. Yang, the Air Force also feels that there is no need to set such a high indicator, which is much better than the active duty.
Feng Lei also spoke.
If it weren't for Yang Gang's need to get a fighter whose body structural strength can withstand more than 9G overload, the J-10 would have made its first flight two years ago.
Now maybe they're all in the army.
"Also, the current problem is not only the structural strength, but also the turbofan engine is not as expected..."
Feng Lei reminded Yang Gang.
The Air Force needs advanced fighters.
It's actually quite advanced now.
Yang Gang is reluctant to lower the technical standards.
Completely different from other units, other units want to lower the technical standard so that they can get it more easily.
The Red Star Rolling Mill is different. It is the army who asked Yang Gang to lower the technical standards...
"With the jet engine installed, the high-altitude and high-speed performance is better, and it is suitable for intercepting air targets," Feng Lei continued.
If the 481 large press does not come out, advanced fighters are just empty talk; the column is too heavy?Manufactured separately
"The Air Force also has a great demand for high-altitude and high-speed air interceptors. We can do this first... If we don't fly all the time, the fighter jet project with jet engines will also be affected.
Feng Lei was really upset.However, Yang Gang has the final say on this matter.
The Air Force needs high-altitude, high-speed fighters to intercept backfires that can penetrate at more than Mach 2.2.
The aerodynamic layout of the large delta wing with canards is excellent. As long as it is equipped with a powerful thrust jet engine, it can show very superior high-altitude and high-speed performance.
Under such circumstances, the original J"10"-XNUMX project in the Red Star Rolling Steel Plant was directly turned into two.
One is the J-28000 equipped with a jet engine, with a flying altitude of 2.8 meters and a maximum flight speed of Mach 9.
The other is the J-10 fighter with turbofan engine, which has stronger air mobility and higher comprehensive capability.
Both projects are now severely affected.
The J-7 and J-8 have already completed their maiden flights.
Even the improved version of the J-7 has already been tested.
Naturally, Cao Feng and others did not want the follow-up work to be affected because the structural strength of the body did not meet Yang Gang's requirements.
Feng Lei also did not want to.
Whether it is J-7 or J-8, the high-altitude and high-speed performance is not very good.
"If we don't solve the problem of structural strength, even if the J-9 equipped with a jet engine is flying at a high speed of Mach 2.8 in the ultra-high altitude, it will disintegrate!" Yang Gang looked at the crowd and said seriously.
If really needed, he can even provide usable aircraft girder directly through the system.
If this is done, many things are difficult to explain.
In particular, Yang Gang began to ask Hongxing Steel Rolling Plant to promote standardization a few years ago. Every component, from the batch number of production materials to processing and assembly, has tracked process documents.
That is too much trouble.
"The J-8 has not yet solved the transonic tremor fault, and although the quality of the J-7 has been guaranteed through our quality system, the performance is still insufficient and is being improved..."
Yang Gang knew why everyone was anxious.
Isn't it just to compete with Cheng Loma and Shen Huoy?
There is no problem in technical competition, and it can even promote the development of everyone's technology faster.
But it is absolutely not possible to lower technical standards in order to produce products faster.
As long as Yang Gang was still in the Red Star Rolling Mill for one day, he would not have promised such a thing to happen.
Produced by Hongxing Rolling Mill, it must be a fine product.
"As for the big press, I'll urge Minister Shen..."
After Yang Gang finished speaking, he announced the dismissal of the meeting.
"Xiao Yang, why are you free to come here?"
Shen Lao raised his head from the pile of documents and looked at Yang Gang.
In recent years, the heavy work has made him look particularly old.
"Shen Lao, isn't that the same thing? If we don't come up with a large press, we can't produce the prototype and engine of our J-10 test flight. The 3-ton die forging machine is trial-produced in sections, which cannot meet our design strength. ."
Yang Gang got straight to the point and directly talked about the problems encountered by the current fighter jet project.
Great press!
for several years.
He had already taken out the design drawings.
The complete design drawing was also completed by the capable engineering and technical personnel mobilized by several major heavy industry units in China.....
"At present there is still a problem. The four supporting columns are too large, and the casting problem has been solved. Even with the gantry planer specially produced by you, the processing cannot be completed... You know, this thing, a single 36 meters in length and 1250 tons in weight..."
Old Shen also knew that Yang Gang and the others were anxious.
The current problem is also put out.
Tens of thousands of scientific and technical personnel in China are working hard for this.
Parts weighing thousands of tons and 36 meters in length.
Even if the casting problem can be solved, what about the machining?
The gantry planer and heavy gantry gun machine produced by the Hongxing Steel Rolling Plant cannot be processed.
Even if the processing is completed, how to install?
"What if we separate?"
Yang Gang asked.
what?
separate?
What do you mean?
Shen Lao looked at Yang Gang with a puzzled expression.
Yang Gang also participated in the design work, and was also responsible for the crucial control 0.9 system.
"Separate the column and divide it into 5 C-shaped steel plates. In this way, each steel plate weighs 250 tons. The pouring and processing problems have been solved. Then these 5 C-shaped steel plates are laminated together to form a column... "
Shen Lao was stunned.
Yang Gang's method, they have not thought about it.
However, welding after processing was considered before, but the difficulty of welding such a large part is not small.
But I didn't think about it without welding, just stick together directly
Thinking about it in his heart, Old Shen's eyes became brighter and brighter.
The problem of the 482 large press has been solved, and the Yun-10 will not be dismounted.
Soon, Shen Lao took Yang Gang to the second level of the project.
It has brought together many big cows who have been trying to solve these problems.
"...This is Comrade Yang Gang's suggestion. Let's discuss it and see if we can solve the current problem. Our domestic large aircraft has also been approved. There is no large press, and the structure of the body is also a problem..."
Shen Lao directly said Yang Gang's proposal.
He knew very well in his heart that there was nothing wrong with Yang Gang's proposal.
"Fitting with C-type plate? Directly processing a C-type plate with a length of 36 meters? In the world, no country has processed super-heavy parts with such a long length..."
"Even if the machining issues are resolved, what about the final fitting and installation 29?"
"There is no international precedent. Can we really solve such a problem?"
"Theoretically speaking, there is no problem after manufacturing them separately and then fitting them together. What about the seal that can be pressed against the night? These four pillars are the key, and they are inherently precise...?
After listening to the big cows, they expressed their opinions one after another.
We've been together, and we've been discussing this for a while.
The four columns are 36 meters long.
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