The military-industrial scientific research system of the academic master.

Although he didn't quite understand why Chang Haonan was so interested in the domestic Sibei from Factory 430, Zhong Shihong didn't ask any more questions.

He knows that he should unconditionally support all decisions made by the technical general counsel.

At least that is the case if it does not seriously affect the interests of the 410 Factory.

So that night, the two met in a small conference room with several technical backbones sent by the 430 factory.

Zhang Zhenhua spread some technical materials he brought on the conference table.

"General Counselor Chang, Director Zhong, the main work our factory is currently doing is to strive to localize the Sibei MK202 engine introduced in the past in accordance with the deployment of superiors. This model is currently planned to be named the turbofan 9 'Qinling'."

"Currently, the navy and air force aviation recognize the JH-7's combat capabilities and cost-effectiveness, and hope to equip more aircraft of this type, so there should be a lot of turbofan 9 equipment in the future."

"..."

He spent a few minutes briefly introducing the status of the Turbofan 9 project.

Of course, this link is mainly for Chang Haonan.

After all, he is only in his early 20s, so normally he shouldn't know much about things in the late 70s.

And Chang Haonan was happy to take some time to listen to it, otherwise it would be difficult for him to explain where his knowledge of Turbofan 9 came from.

Besides, there were some secret history-level things in it that he really didn’t know about before.

In short, Zhang Zhenhua’s idea is to directly purchase equipment or engage in cooperative research and development through investment. First, he can imitate the original Sibei MK202 to solve the urgent needs of the JH-7. Then, if Chang Haonan still has extra energy, , then it would be best to give the Turbofan 14 a radical improvement just like the Turbojet 9.

"Um……"

Chang Haonan looked at the information about Sibei on the table and did not immediately give a positive answer. Instead, he touched his chin and thought for a while.

This moment of hesitation made Zhang Zhenhua, who was sitting opposite, feel nervous again after he had just relaxed a little.

Fortunately, he studied the previous experience of this general counsel in the afternoon and found that the latter had participated in the formulation of a series of independent aviation industry standards and seemed to have a strong obsession and persistence in self-reliance.

And this kind of people are often the most disdainful of the argument that it is better to buy than to rent than to build.

So he gritted his teeth and continued:

"Many people now have the opinion that they should go directly to Rolls-Royce to buy hundreds of SPEI engines for the JH-7, but we still feel that trusting such core equipment that affects national defense security to foreign countries will Especially when it comes to purchasing from Western countries, it’s somewhat unreliable.”

Of course Chang Haonan knew that the other party was trying to provoke him with his words, so he immediately waved his hand:

"Don't worry, I will definitely support the continued push of Turbofan 9."

"But the specific operation is still somewhat different from what you think."

Zhang Zhenhua felt that he needed to keep some quick-acting heart-saving pills on hand.

"what do you mean……"

Chang Haonan organized the language a little:

"No matter who was right or wrong in the debate in the 70s, from a current perspective, the technology of SPEI MK202 has indeed fallen behind."

"Except for the two indicators of military fuel consumption and maximum thrust on paper, Spey's performance is not even comparable to the finalized turbojet 14A."

"And more importantly, its upgrade potential has been squeezed out. The ring-tube combustion chamber and excessive bypass ratio have fundamentally limited its use in fighter jets."

"So, the only use of this model at present is to be equipped on the JH-7 model."

After hearing this, Zhang Zhenhua nodded helplessly.

Although he didn't want to admit it, what Chang Haonan said was all true.

Spey's design is really too old, and even in the era when it was first introduced, its performance was very average.

Its thrust at medium and high altitudes is not even as good as the turbojet 7.

It is also for this reason that the overall performance of the British version of the Phantom-F4K fighter equipped with a turbofan engine is not as good as that of the American version of the late-model Phantom equipped with a J79 turbojet engine.

Twenty years ago, it could still be said that Spey's design concept was at least advanced, but now, especially after the emergence of the turbojet 20, the situation has changed.

At this time, Chang Haonan changed the subject and said:

"But what you just said is right. The domestically produced Sibei, or turbofan 9, plays an irreplaceable role for the JH-7."

"So, I hope to use a more resource-efficient way to help you get the Turbofan 9 out, and also make subsequent upgrades."

Although there is no such concept at the moment, Zhang Zhenhua feels that he should have been PUA, and there is evidence.

But he had no other choice.

"Tell me about it."

Seeing that the heat was almost over, Chang Haonan revealed his ultimate goal:

"I hope to use the Turbofan 9 project to verify some manufacturing technologies."

"Technical verification?"

This statement made Zhang Zhenhua look a little confused,

"Neither Qinling nor Kunlun can meet the needs of third-generation fighter jets, so the project to develop third-generation high-thrust turbofan engines must be put on the agenda as soon as possible."

Chang Haonan stood up and gave an explanation while walking slowly.

Not only for Zhang Zhenhua, but also for Zhong Shihong.

"We must admit that we lack too much technology in this area. With our current capabilities, it is difficult to complete even the design work, let alone other parts behind it."

"But if we have to wait until the preliminary design of the turbofan 10 is completed and we start to solve the manufacturing problems when we start manufacturing the engineering prototype, then the cycle is a bit too long, and the time spent focusing on the design is equivalent to a waste. Half of it."

"So I plan to synchronize these two processes, or to proceed approximately simultaneously. While improving the design plan, I will also verify and improve some new technologies that may be used in the production and improvement of turbofan 9."

“According to my thinking, the design of the Turbofan 9 should not change much compared to the Spey MK202, but as our manufacturing technology advances, it may gradually use precision-cast receivers and parts without margins. A series of new things such as fans, single-crystal turbine blades of new materials, etc., of course, in this process, its performance will definitely be improved compared to the original version.”

Zhang Zhenhua understood.

Zhong Shihong also understood.

Chang Haonan is playing a big game.

At the expense of slightly sacrificing the design finalization progress of turbofan 9, we ensure that the more important turbofan 10 will achieve higher research and development efficiency.

If everything goes well, the small batch production stage can even be transferred immediately after the design is completed, greatly shortening the time required for production finalization.

"Using Turbofan 9 as a verification of Turbofan 10..."

Zhang Zhenhua’s fingers tapped the table gently and rhythmically:

"Factory 430 provides supporting equipment to Factory 410. It doesn't sound good to talk about it, but it doesn't do any harm to us."

"Even if the design process needs to be modified frequently and the production finalization is delayed due to differences in the design process, it will still be much faster compared to the timetable of General Counsel Chang, compared with us working behind closed doors."

These words are more like he is convincing himself and others in the 430 factory.

"I agreed!"