The Military-industrial Scientific Research System of the Academic Master Chapter 520

Chapter 520 Singapore Airshow, main exhibition groups

After successfully completing the work handover, Chang Haonan flew back to Shengjing directly with the test data.

 The next step is to design and optimize the structure of the turbofan 10 compressor.

The blade separation flow active control technology he developed performed even better than expected on the final three-stage high-pressure compressor of the 902 prototype by about 8-10%.

From a research perspective, it is certainly a good thing.

 When improving the turbofan 9A, Chang Haonan left a margin of about 15% based on numerical calculations based on general engineering experience.

 But it turned out that there was too much left.

 After the upgrade, the new version of TORCHMultiphysics has improved the simulation accuracy of general turbine machinery to a higher level.

However, specifically for the Turbofan 10 project, this means that some previous calculations need to be corrected -

Since the inlets of the J-10 and J-11 are calibrated at a high boost capacity, the total boost ratio of the turbofan 10 cannot be too high.

Chang Haonan's previous design point was 25-25.5.

 Hence, the compressor blade design, especially the active separation control design, needs to be adjusted more conservatively.

 They have all worked on projects with Chang Haonan from the beginning, so naturally some people quickly recognized Chang Haonan.

 Fortunately, although this work is troublesome, it is not difficult. Nowadays, with relatively sufficient manpower and computing resources, it should not take too long.

About a dozen people in suits were lining up nearby, obviously waiting to get on the bus.

 Even in the history of aviation development development in the world, this is almost a unique problem.

 The car stopped steadily in the square in front of the main building.

 Also parked here is a "Shenyang Fei" passenger bus.

Just when Chang Haonan was curious, he discovered that there were many familiar people in the crowd.

 This value can achieve a relatively good balance between the two models of aircraft, as well as between low-speed and high-speed performance.

 It was the same Jetta King that took Chang Haonan from Taoxian Airport to the 606th Institute.

 “Hello, Mr. Chang!”

In the institute, unless there is a formal occasion or a leader comes to inspect, few people will dress so formally.

 We all got to know each other when we were working on Turbojet 14 before.

 This is a rare scene.

 For a time, the voices of greetings and greetings came one after another.

 After all, wearing a suit and leather shoes is really uncomfortable.

 Furthermore, they did not join the Turbofan 10 project, but continued to engage in aeroderivative combustion.

 “Mr. Chang!”

  After all, in most cases, the problem faced by researchers is that the boost ratio is not high enough...

  There is probably some important activity on the aeroderivative gas turbine side.

 But if it is 10% higher, the actual boost ratio of the compressor will reach a level of 28, which will inevitably affect the supersonic capabilities of the two aircraft.

Since he had been recognized, Chang Haonan asked directly.

“What important event are you having? Are you all dressed up so formally?”

“Also, why didn't you see Mr. Yan?”

These questions caused a moment of confusion.

“Mr. Chang, you don't know?”

 After a short silence, one of the relatively young engineers answered:

“As one of the three major exhibition groups, China Aviation Industry has been invited to participate in the Asia Airshow in Singapore next week, so a large delegation has been sent there, and we are all accompanying technicians.”

“As for Mr. Yan...he definitely can't go abroad casually, and the progress of the aeroderivative gas turbine for power generation is still a bit tight, so he needs to stay and take charge.”

　　It is a large backpack that is half the height of a person on the entire shoulder.

 From a morphological point of view, it should be empty.

This is not surprising.

It is already very face -to -face for the transportation aircraft to buy the goods directly.

Of course, a secondary reason is that China does not have domestic transport aircraft large enough to participate in the exhibition.

“I have been conducting tests in 624 Shangougou during this period, and I really haven't heard of it.”

Chang Haonan was a little ashamed that he knew nothing about such big news:

 “But…what does this main exhibition group refer to?”

“Isn't it just in time for the financial crisis? It is said that the economic situation in Singapore is not very optimistic, so the area and specifications of the venue this year have been reduced, and there is no way to provide a large enough outdoor exhibition area for all exhibitors.”

“However, the United States, France and us are exceptions, each receiving one-fifth of the total area.”

“So this means...QC130 gas turbine will also be exhibited at the exhibition?”

 Hearing the news, Chang Haonan was quite excited.

 Singapore Asia Airshow is a relatively successful one among the emerging air shows in the post-Cold War period.

Of course, it is still significantly weaker than those old air shows in Europe.

However, for China Aviation Industry, which has just begun to enter the world, this stage is not too small.

More importantly, due to its geographical conditions, the Singapore Airshow will attract more attention from third-world countries such as Southeast Asia.

 At least in the short term, they will also be China's main target customers for arms sales.

 “Originally there was this plan.”

 Another shorter **** said with a somewhat regretful expression:

“However, a total of two prototypes of QC130 were manufactured, and both were sent to the 708 Institute for technical verification. It was really impossible to take the prototypes to the exhibition, and in the end they became 1:1 plastic models..."

“This time we mainly worked with representatives from the 410 factory to provide technical support for the J-7F and FTC2000, Guihang's J-9 aircraft.”

Chang Haonan understood immediately.

 Both aircraft use turbojet 14B engines.

 As a model that has only been finalized for a year, for the sake of insurance, it is definitely necessary to bring more technical strength with you just in case.

“Didn't the J-8C say it was going there?”

 It is naturally impossible for him to forget the first model he actually participated in the research and development after his rebirth.

"No, I guess Shengfei has also given up on that export model. It's almost the 21st century, and I'm afraid not many countries still need an interceptor, even a multi-purpose interceptor."

 That makes sense.

Furthermore, even if an interceptor is needed, the MiG-25s in Russia are almost sold at scrap prices, and the price/performance ratio is incredible.

Chang Haonan originally wanted to ask about the exhibitors this time.

As a result, before he could ask the question, someone with great interest gave the answer in advance:

“As far as I know, our main products this time should be the M60 passenger aircraft that will soon complete the certification process and start delivery, and the export model of the JH-7, FBC1.”

“The other one is exhibited in the name of a jointly developed model, but it is actually the original Tupolev C808/Tu334.”

Chang Haonan has naturally been paying attention to the situation in Figure 334.

After the two parties signed the contract, Tupolev's actions were swift. However, Hufei had never had access to Russian technical information before. In addition, although the Tu334 was a regional airliner, it was designed and generated according to the standards of a mainline airliner. Therefore, the speed of digestion and absorption is definitely not as fast as that of Project 11.

 Now it happens that Russia is not the main exhibition group, so the exhibition area is not enough.

 Paint Picture 334 with the national flags of the two countries and put it on display in China. It would be a win-win situation.

“Apart from these three, there may not be much left. The two fighter jets I just mentioned, as well as the helicopters imported from France by Bingcheng, the Chujiao 6 and Qiang 5 produced by Hongdu..."

The other party counted on his fingers again:

"There are not many types, but I heard that the United States will bring the latest F18F carrier-based aircraft that has just made its first flight this time, and France will also display the prototype of the Rafale. In comparison, it seems that our battle is not enough... "

 Speaking of this, everyone felt a little disappointed.

 In peacetime, air shows and defense exhibitions are the front line of competition in the aviation industries of various countries.

Although they all play some tricks, generally speaking, everyone still knows who will win and who will lose.

“The two latest third-generation fighter jets...”

Of course, Chang Haonan could not reveal his development plans for the two main models of J-10 and J-11. He could only encourage him with a firm tone:

“The J-10 was already tested last year. I estimate that our own third-generation aircraft will be officially unveiled in the past few years!”

 (End of this chapter)

Chapter end