silence.

Even the whole air solidified.

This is the most serious problem facing a large aircraft project!

The four JT-3D engines imported from the United States were originally used as backup, and the large aircraft were originally prepared to use the domestic turbofan eight.

As a result, the turbofan eight was successful, but it was not suitable for the use of large aircraft. A group of leaders from the large aircraft factory decided to finally use four spare engines to install the second prototype for test flights, so that Yunshen could fly.

This is a problem that no one wants to face. Whether it is the staff of the 708th Institute responsible for designing large aircraft or the relevant personnel of the 5703rd Factory responsible for producing large aircraft, they are not engaged in engines!

If the domestic supporting facilities are not good, they have no choice.

"Director Liu, if practical engines can be provided in China, our planes can still fly!" Ma Fengshan and Liu Yijiu have never had contact with him, but Liu Yijiu sent people to contact him a lot. This is the first unit in China that is willing to continue to inject funds into large aircraft, and it is also a very rich unit, and no one wants to offend him.

What's more, Liu Yijiu was not dissatisfied with this project, but raised the most difficult questions.

If the engine problem is not solved, even if the entire large aircraft continues, once the supply channels are cut off from abroad, these aircraft will still not be able to fly. At that time, if foreign countries want to use this threat, it will be difficult to solve the problem.

"Director Liu, I don't think there is anything to worry about in this regard. Even without Americans, we can introduce British bass engines. Especially now, the production technology of bass engines has been introduced in China..." Yan Ruyun is not sure about how Liu Yijiu's progress has been made by taking over the turbofan eight team.

The technology of bass engine. In Qin Fei, Qin Fei's people are also hesitant.

"Bass engine? According to what I know, domestic production is not possible at all. So far, I have not seen any successful samples..." Liu Yijiu sneered.

"Isn't there our turbofan ten?" Wang Shunyi felt increasingly that Liu Yijiu was abnormal.

It was like taking gun medicine. If he continued like this, there was no need to continue talking. The Ninth Yuan hid in the mountains and studied his own skills. What a great thing. Why do you have to come out and do these thankless things and waste a lot of money?

Looking at Li Rui beside Liu Yijiu, Li Rui lowered his head, making Wang Shunyi even more confused.

Liu Yijiu is not a person who can affect work because of personal matters.

"Yes, Director Liu. I heard from Director Zheng Hao that the development of the turbofan 10 team of the Institute 611 has made breakthrough progress. The first engine sample has been tested and tested. If the turbofan 10 test work is over, there is no problem. I think the engine will not become an obstacle to our large aircraft going to the sky! Even then, we will not worry about the safety of the large aircraft because of heart disease..." After hearing Wang Shunyi's words, Yan Ruyun quickly echoed.

The Ninth Institute took over the research work of Turbofan 8 a few years ago. It also further studied Turbofan 10 based on Turbofan 8 and even the samples came out. Or was it because they used a backup engine instead of Turbofan 8?

"Director Liu, there are indeed many problems in our development process, but these problems are not impossible to solve, and we have solved all the problems that arise. Please rest assured. We are all technical, and there will never be any negligence in the safety performance of the aircraft..." Ma Fengshan also knew that because of the domestic industrial foundation, many things have adopted local methods.

Not assured of safety performance, this is normal.

However, the test flight has just begun now! The plane is nothing else. It must be tested, and it will take a long time to conduct a large number of test flights before entering the market. If there is a problem, it will be a great thing!

"As for the 58 imported finished parts you refer to, if these are able to keep up with domestic materials, production processes, etc., it is not a problem. When I was in contact with the staff of the Ninth Hospital in the past, I also knew that if the Ninth Hospital could provide avionics systems, radars, even large presses, blasting welding technology, these 58 imported finished parts can no longer be imported from abroad, and will definitely be produced 100% domestically..." Ma Fengshan cleverly pushed the matter to the Ninth Hospital.

The Ninth Hospital wants to intervene in the big airplane program, not only because the Ninth Hospital can provide large funds, but also because the Ninth Hospital can provide strong technical support.

Technical support is what the large aircraft team needs most.

They design aircraft, not to solve problems in the production process of various parts.

After all, they are not experts in mechanical manufacturing, production processes, and even materials.

When Liu Yijiu heard Ma Fengshan's words that the chief designer whom he respected used softness to overcome hardness, he couldn't help but smile bitterly in his heart. Then he thought, it seemed that none of them were the fault of them.

The country's industrial foundation is poor, and he feels that everything he does is to be restrained. All this cannot be a reason for his irritability.

Only by working hard to solve these problems, solving them step by step, and allowing the country to gradually develop and become stronger in the process of solving these problems, is what he should do. He is irritated, because he is a little anxious.

Technology is definitely not as simple as treating guests to dinner.

The rice must be eaten bit by bit, and Ruth walks step by step.

Even the United States and the Soviet Union did not develop and strengthen in just one or two decades. If the Soviet Union had not almost wiped out the entire United States' industrial foundation during the US financial crisis, and Hitler attacked the entire Soviet Union with absolute power, which allowed their industries to develop and grow rapidly in the war, the Soviet Union would not have had the strength to compete with the US imperialists.

The United States has developed for a longer time. Although it is not as deep as an old industrial powerhouse like the United Kingdom, the American industry has developed for more than two hundred years before it has achieved its achievements today!

The Republic has spent less than half of its economy on industrial development in just thirty years. With the current foundation, it is not bad. There is no need to complain or get upset.

"Ma Lao, I believe that this can be done. What if these problems cannot be solved in a short period of time?" Although Liu Yijiu's attitude improved a lot, the problem is still sharp.

"If there is no way to solve these problems, we can still take the current method and continue to import key components in the process of continuous development. We will obtain more data and experience from more test flights and discover more problems..." The current situation has become a separate confrontation between Liu Yijiu and Yunshi chief designer Ma Fengshan.

Yan Ruyun was speechless. They just wanted to obtain funds to assemble the remaining three prototypes. As for this?

Just 30 million is enough.

I immediately said to Liu Yijiu, a young man who was looking for trouble, with great dissatisfaction, and said, "Director Liu, most of the remaining three prototypes have been produced. You only need to assemble these parts into finished aircraft."

"Director Yan, things are not that simple, right?" Wang Shunyi understood what Liu Yijiu meant.

At the beginning, in order to win their consent, Liu Yijiu did not express many of the defects of the large aircraft. If the Shanghai Municipal Government and the current development of the large aircraft continue, the entire large aircraft may not even be able to promote the entire domestic industrial system as they expected.

Now, Liu Yijiu is forcing the other party to hand over the management power to the Ninth Court, so that the large aircraft can develop according to the Ninth Court's ideas and promote the country's industrial system.

After all, they have no intention of ensuring that they will not lose money at the beginning, and they plan to invest at least 2 billion yuan in large aircraft in the next ten years!

No one wants this 2 billion investment to be wasted!

Wang Shunyi's expression was very serious. When everyone looked at him, he continued: "According to the technical information we obtained, your first prototype for static pressure testing has been found in October 1976, with more than 1,650 kinds of faults, including riveting quality problems, such as small rivets instead of large rivets, inserting nails not riveted, leaking rivets, etc.; forced assembly of important stress-bearing parts; incongruence between components, etc.... Especially 127 faults appeared on the No. 10 ribs on the important stress-bearing parts of the wings on both sides..."

This is just the first plane without going into the sky.

Wang Shunyi said this, but did not end, but continued: "In the first quarter of 1978, the large aircraft factory conducted a quality inspection of the second prototype used for test flights. Just the quality of the riveted parts, there were 5,312 items, including 127 major quality problems, and 825 pieces of scrapped and updated parts. These data are not wrong, right? Moreover, you did not report these data to the Ministry of Aviation Industry in full..."

These data are all so detailed, and all of them are the main management units of the entire large aircraft project.

Moreover, the Shanghai Municipal Government believes that this is a project they are in charge. Even if it is not reported to the Ministry of Aviation Industry, as long as the problem is solved and the plane finally flies, there will be no problem.

But unexpectedly, the people from the Ninth Hospital obtained these data somewhere!

Moreover, now that they have taken out these data, they have no way to object.
Chapter completed!