Reborn Tech Scholar

Chapter 299 Prototype Manufacturing

Chapter 300 prototype manufacturing

Xifei Group.

As the research and production base of large and medium-sized military aircraft in my country, the entire XAC covers an area of ​​more than 300 million square meters, that is, an area of ​​more than 5000 mu, and the entire XAC has more than 20000 employees.Since its establishment in 1958, for nearly 60 years, XAC has developed and produced more than 20 types of military and civilian aircraft.Military aircraft mainly include 'Flying Leopard', H-20 series aircraft, etc., as well as the Y-60 strategic transport aircraft that has not yet officially entered service; civil aircraft mainly include Y-[-] series aircraft and MA[-] aircraft.

Although the market value of XAC is only over 1000 billion, there is no doubt that this is an aircraft manufacturing company with many advanced technologies.The Design Department of Xi'an Aircraft Technology Center, as the leading unit for the development and improvement of new aircraft of XAC Group, has nearly 500 aircraft professionals, including 21 researcher-level senior engineers, more than 140 senior engineers, and 150 engineers. There are seven aircraft design and research laboratories with professional support, including overall aerodynamics, fatigue strength, structural dynamic system, mechanical system, and ad hoc system.And a system principle laboratory, two business management rooms and 49 professional groups with a full range of categories.

Of course, in comparison, the Aero-Engine Research Institute of Mizuki University has a larger scale, and has 1200 researchers, including more than 500 professors and first-level researchers, and more than 500 associate professors and second-level researchers. Those who are still studying for a Ph.D., graduate school, or just joining a researcher have stronger technical strength.

However, XAC is an aircraft manufacturing base after all, with a more solid background. It has more than 6000 sets of equipment, including more than 1600 sets of metal cutting equipment, more than 70 sets of large-scale precision processing equipment and more than 30 new technology and new technology production lines, all of which are at the international advanced level in the 90s. .Moreover, XAC has 20 professional supporting aircraft design rooms and five series of aircraft design laboratories including flight control, hydraulic pressure, fuel oil power, power supply, and environmental control; its subsidiaries have strong technical strength in equipment, power, technical equipment, machining, There are nine professional aircraft production plants for sheet metal, non-metal, partial assembly, final assembly, and flight test; various professional institutions such as material technology application research institute, computer center, test center, and metrology inspection center have been established.

Now XAC is rushing to manufacture prototypes. They are more enthusiastic about the Y-30 than the Y-20 developed by themselves. They can't wait to divide it into two steps. One is to carry out supercomputer simulation and wind tunnel test, and the other is to start manufacturing the prototype.

Xifei is grateful to the superiors for handing over the manufacturing prototype to XAC. They know that once the prototype is finalized through a series of experiments, mass production will also be handed over to XAC. After all, Y-30 involves a whole set of new materials, whether it is titanium alloy, nickel alloy or new composite materials, these are all the most advanced technologies, Xifei can also take advantage of this situation to control and use its own products at that time .

They hope to seize the opportunity. The market value of just over 1000 billion is obviously not in line with the actual market value of XAC. They want to learn from the power of the aviation engine. The market value of the engine has soared because of the Everest engine and the Gefeng engine. Now the market value has already More than 5000 billion, an increase of more than ten times.

But you must know that XAC's technical strength is still higher than that of aviation engines!

The engine manufacturing base and the operation room are busy all the time. Various parts are transported here, making it seem like a large-scale mechanical processing factory. People are coming and going, showing a lively scene.

They will complete the manufacture of 8 'Qinling Engines' in three months to be carried on the Y-30.

This is undoubtedly a challenging task, but although it is a listed company, it is actually a national first-level enterprise, and it is natural to complete the task.

"Mr. He, you must pay close attention to the manufacture of the Y-30 prototype. The Aero-Engine Research Institute of Shuimu University has already paid 10 billion in advance to the group account. We, Xi'an Aircraft Group, must also live up to it. We must not lose face, otherwise we will lose face in the industry. There will be a big joke inside, and the superior leadership will take down the board, and we will miss the development opportunity of Xifei!" Zhao Dongyu, chairman of Xifei Group, said earnestly.

"Mr. Zhao, don't worry, we have devoted 30% of our enthusiasm and attention to Y-100, and nothing will happen!" said Mr. He.

As the chief engineer of XAC Group, Mr. He served as the designer and deputy team leader of the design department in 1988, as the assistant to the director of the design research office in 1995, and as the director of the special system design research office of the design department in 1998. In 2004, he served as the deputy director of the technology center and the head of the design department. In 2006, he directly served as the director of the technology center of XAC. In 2008, he served as the chief engineer of XAC. Director and Vice President of Fei Group, Mr. He is very clear about what this Y-30 prototype manufacturing means.

It means that it is a huge opportunity for XAC, not only because of the huge order of Y-30, but also because of the further improvement of Y-20 and the improvement and modification of related aircraft and the development of new aircraft.

一台D-30发动机就要300万美元，比D-30还要先进的秦岭发动机，岂不是可以卖到400万美元甚至是500万美元。

Things like engines are a seller's market, whether you want to sell them or not is a matter of opinion.

So Mr. He has been keeping an eye on the manufacture of Qinling engines and the production of related materials, and even for the production of some specific materials, Xifei also applied to the superior for a batch of the latest equipment, some of which even Xifei does not have.

Such as giant hydraulic machine tools, ultra-high pressure hydraulic equipment.

Many components require an 8-ton hydraulic die forging machine, and there is only one 8-ton hydraulic die forging machine in China. It is produced by Huaxia No. 2012 Heavy Machinery Group in Deyang, Sichuan. This machine is also the world's largest die forging machine. The hydraulic press was just put into production on November 11, 2. This die forging hydraulic press is 27 meters above ground and 15 meters underground, with a total height of 42 meters and a total weight of 2.2 tons.It is precisely because of such a national treasure-level strategic equipment that the Y-30 will be optimized to the greatest extent, using so many titanium alloys!

In addition, a 1.5-ton hydraulic press is also needed, which is also a national heavyweight. It needs to be processed and produced at Yizhong, otherwise XAC will have no choice.

In recent years, with Huaxia's breakthroughs in some heavy equipment, the processing capacity has advanced by leaps and bounds. Huaxia can manufacture third-generation aircraft, fourth-generation aircraft, large passenger aircraft, and transport aircraft. Without large-scale forging hydraulic presses and hydraulic presses, many aircraft components cannot be forged at all.

At that time, the large passenger aircraft 'Y-10' developed by Huaxia made its first test flight. After 170 hours of flight test, it stopped on the ground. It was because Huaxia did not have a large forging hydraulic press at that time, so it could not forge the entire aircraft beam. Instead, it used small equipment to forge it in sections , Combined assembly, can not meet the required performance index of large aircraft.

It is precisely because of the importance of large die forging hydraulic presses that it has become an important symbol to measure a country's industrial strength.

"Mr. He, you must remember that this is the most important task for Xifei at present, and it must be completed on time no matter what. We must see two Y-10 prototypes completed according to the design on October 30. Otherwise, our Xifei Fei is going to die!" Zhao Dong patted Mr. He on the shoulder.

Mr. He felt that the burden on his shoulders was three points heavier.

However, seeing the researchers of the Aero-Engine Research Institute forgetting to eat and sleep to advance the mission together with the manufacturing engineers, Mr. He knew that he had no way out, and XAC had no way out!

Qin Yuanqing also followed up the manufacturing progress of the Y-30 prototype at any time. After all, no one knew what would happen during the forging process. Some design indicators were proposed, but they had to be manufactured.

More than one-third of the researchers in the entire research institute were sent to XAC, and Harbin Institute of Technology, Beihang University and other cooperative units also sent people to XAC to participate in the manufacture of prototypes.

For the design of Y-30, Qin Yuanqing is very sure and confident, but Qin Yuanqing is still not very relieved about Xifei.

In order to put pressure on Xifei, Qin Yuanqing accompanied his superiors to Xifei every now and then to check the manufacturing progress of the prototype and the forging of components.

The manufacturing costs of these two prototypes were all paid by the Aero Engine Research Institute. The advance payment was as much as 10 billion yuan, and there was another 2 million yuan to be paid later.

Once something bad happens, the loss will be huge.

Fortunately, the superior department also attached great importance to the Y-30, and even sent military representatives to watch over the Y-30, and they were also very strict about the quality and progress.

Qin Yuanqing also went to watch the wind tunnel test. The wind tunnel test refers to placing aircraft or other object models in the wind tunnel to study the interaction between gas flow and other models, so as to understand the aerodynamic characteristics of the actual aircraft or other objects. Aerodynamic test methods.

Although the original C-17 'Globemaster' has complete wind tunnel test data, after all, there are many places to be optimized, and it is still necessary to do wind tunnel tests from scratch to simulate some data of the aircraft.

Fortunately, the wind tunnel tests have been normal so far, and nothing abnormal has occurred.

Of course, the wind tunnel test is only a simulated test and cannot be completely accurate.For example, there are insufficient boundary effects or boundary interference. In real flight, the static atmosphere has no boundary, but in the wind tunnel, the airflow has a boundary, and the existence of the boundary limits the boundary.In addition, there is support interference. In wind tunnel experiments, it is necessary to use supports to support the model in the airflow. The existence of supports will interfere with the flow field of the model, which is often referred to as support interference.Although the influence of the bracket can be corrected through experimental methods, it is difficult to correct it cleanly.

In addition to conducting wind tunnel tests, Y-30 is also performing supercomputer simulations and operations, but so far everything is going smoothly.

With the end of June, Qin Yuanqing also had to return his mind to the school, because he had to bid farewell to a group of graduates. The end of June was the graduation season for undergraduates, graduate students, and doctoral students. As the executive vice president of Shuimu University, he had to attend the graduation ceremony , to send these graduates the last ride.

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(End of this chapter)