Capital, airplane building.

"Xiao Feng is really powerful, and he easily hung the Hawk missile on the Tomcat fighter!" Lin Lao said excitedly: "I really didn't misunderstand this kid, as long as it is the plan he proposed, then it is possible to achieve it!" ”

"Yes, next, we only need to buy some Hawk missiles from the international market, and we can get long-range interception capabilities, which is what we dream of!" An air force leader said excitedly: "In the future, we don't have to be afraid of the fighters of Lao Maozi in the north anymore!" If those backfires dare to come, we will send them to the west with J-11 and Hawk missiles! ”

Since the collapse of the big brother, the air force has faced heavy national defense pressure, and the bombers of Lao Maozi deployed in the north can drive straight down and bomb directly to the capital.

The high-altitude and high-speed J-8 fighter is designed to intercept this kind of bomber, but there are no guns and ammunition, and the supporting radar and missile systems cannot be developed for a long time, and if there is a real threat, the J-8 can only be lifted into the air with the Thunderbolt-8 close-range combat missile to intercept the enemy at close range, and only four can be hung, and once the fight is over, it can only use machine guns.

Now, the J-8-2 has been sent to the United States for improvement, and with the American-made radar and the missiles assembled by the United States, it can be regarded as solving the problem of medium-range interception, and the combination of the J-11 and the Hawk missile has allowed the Eastern Air Force to obtain a long-range interception capability for the first time, and it can attack enemy aircraft from a distance of 50 kilometers!

Everyone is very excited, since Qin Feng was born, the equipment of the Air Force has begun to develop rapidly step by step, Qin Feng is really a blessing for the big guys!

"However, there are only five sets of accessories for the Tomcat, and we can only assemble five fighters at most, which is far from enough."

"Yes, we still have to work hard to promote the supporting work, this titanium alloy wing box is a difficulty, and there are on-board electronic equipment, by the way, how is the mapping and imitation of the radar going?"

For the Tomcat fighter, the AWG-9 radar and the immortal bird are a perfect combination, and if you want to map and copy the Tomcat fighter, this radar is the key.

"There are three main units of airborne radar in our country, after bidding, 14 got an AWG-9 radar, began to survey and copy, they have the previous foundation, and the technology of this radar is not very advanced, so the progress is very fast, it is said that there will be a few more months to produce a prototype, named 1491 radar."

The main airborne radar in China is the 607 Institute and the 780 Factory, the latter has completed the military to civilian, become Changhong Electronics, civilian products are in short supply, and they did not come to the bidding, as for the 607 Institute, which was previously responsible for the development of the airborne radar project of the J-8 2, although it is experienced, it is the same old-fashioned simulation technology.

The 14 institutes are major radar institutes in China, but they used to mainly engage in ground radar, and in recent years, they have only been involved in the research and development of airborne radars, and their technology has developed rapidly, which fully reflects the strength of their first-line radars.

"The AWG-9 radar is just the technology of the sixties and seventies in the United States, but for us, it is still full of challenges, take the radar antenna as an example, the Europeans have not processed it, and our 14 institutes have processed qualified products last year, but the technical process is complicated, and it cannot be mass-produced......"

Lin Lao suddenly thought of something: "You say, will Xiao Feng have a more advanced manufacturing process?" The kind that can be mass-produced? ”

"Him?" The big guy originally wanted to shake his head, thinking that Qin Feng should not have this ability, but when I think of Qin Feng's miracles again and again, the Yankees' fire control radar program will be modified, and there may really be a better plan for the processing of this radar antenna?

"We should try."

"Recently, 14 institutes will send people to the capital to report their work, and when Xiao Feng comes back from the south, we will call him over and have a meeting together." Lin Lao spoke.

Qin Feng was taken to the south by Lin Lao this time, tossed for more than a week, and after finishing his work, he sent the Persians away, and he returned to the capital, and just got off the train, he saw the people who came to greet him.

"What? Lin Lao still wants to find me? ”

"Mr. Qin, you came back just in time, Lin Lao coordinated the mortgage loan for you, if you are free, come with me."

"Just this thing? Nothing else? ”

"This is the kind of thing that Lin Lao told me."

Qin Feng always felt that there was a ghost in it, and sure enough, when he walked into the airplane building and came to the conference room, he turned his head and wanted to leave, but the door had been closed from the outside.

"Mr. Qin has finally arrived, let us have a warm applause welcome!" Lin Lao applauded first.

"Lin Lao, what is this?" Qin Feng frowned and looked at everyone, I don't know these people.

"Mr. Qin, these are all comrades from the 14th institute, the one sitting on my left is Lao Ben, he led the team over, come, you sit on my right." Lin Lao pointed to an empty seat to his right.

Qin Feng's eyes widened, the pillars of the 14th institute, Ben Lao?

Ben Lao was born in the Northeast in 1938, grew up in that special era, graduated from the radar major of the Radio Engineering Department of Harbin Institute of Technology in 1963, and then began to fight in the field of radar all his life, he presided over the research and development of a radar, the most famous of which is, of course, the phased array radar used on the Aegis battleship.

Although the 14 institutes were engaged in ground-based radars, when it was discovered that there was a great shortage of airborne radars in China, Ben Lao still stood up and led some of the people of the 14 institutes to build airborne radars, bringing the airborne radars to the world-class level.

Looking at the change in Qin Feng's gaze, Lin Lao smiled: "Come, Mr. Qin, sit down." ”

"Old Lin, you don't need to call me Mr. Qin, it's too outward, let's call Xiaofeng."

"Well, Xiao Feng, sit down and talk." Lin Lao pointed to the seat next to him again, we are discussing the 1491 radar project, do you have any ideas?

1491 radar? This is a very famous project engaged in by 14, when it developed to the 1493 radar, it was installed in the nose of the domestic J-11, and the current Tomcat, and the nose of the later Su-27 are about the same size, this radar is tinkered with, and the airborne radar project can be completely solved in the future.

"Well...... Our Pacific Group is engaged in civilian products, and we have never been exposed to such things as radar, so where can I have any good opinions. Qin Feng said modestly, and then sat down.

"Let's talk about it casually, Mr. Qin, let's introduce you to the relevant technology, you give us some suggestions for improvement, Zhang Gong, you can introduce the radar antenna process to Mr. Qin."

Hearing Elder Ben's words, a female engineer below stood up.

Zhang Gong, also born in 1938, a southerner, graduated from Zhejiang University in 60 years with a major in mechanical manufacturing, and then entered 14 institutes, and has been in charge of the processing technology of antennas.

"Advanced airborne radars require flat slot antennas, which are characterized by multi-layered, cavitated, thin-walled antennas and require high accuracy. At present, the most advanced technology in the world is to use CNC to process various parts, and then weld the parts into shape with salt bath brazing process......"

Qin Feng frowned.

He has also been exposed to this craft, but he is not very proficient, after all, although he has learned a lot, it is impossible to be proficient in everything.

In the past, at the beginning, the radar antenna was in the shape of a pot lid, and the efficiency of radiating electromagnetic waves was very low, and as the lid became larger and larger, it would become more and more difficult to rotate, so the radar engineer had an idea, buckled the lid back to the front of the radar, and put the radar tube on the base that could move at the back, so that when the radar beam needs to be changed, let the radar tube move, and the front pot lid will not move, which is the inverted antenna.

Most of the current fighters, Lao Maozi's MiG-29 and Su-27, Europe's Tornado fighters, and France's Mirage 2000, use this scheme.

As for the flat plate slot antenna, it is the advanced antenna technology that the Yankees conquered in the sixties and seventies, and the slit is made on a flat plate, and the width of the gap is half a wavelength, so that the radar wave radiates out from the slot, with high efficiency and strong function, the most advanced, but the processing technology required is very high!

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How tall?

In fact, it has a seven-layer structure inside, which is composed of crack arrays, waveguide arrays, partitions, feed networks, etc., these parts are very small and need to be precision machined with CNC milling machines. The thickness is only 0.5 mm, the processing accuracy is 0.01 mm, the seven layers are connected by needle welding, the working waveguide brazing seam brazing rate is basically 100%, there is no visible deformation, the flatness of the radiation surface is 0.1 mm, and the brazing fillet is less than R0.2 mm......

None of Europe's precision machining technology can reach it, let alone the East!

Zhang Gong in front of her successfully overcame this problem in 87 years, which is relying on her ingenuity and 14 groups of highly skilled craftsmen, but there is still a big gap between simple laboratory products and large-scale mass production.

In later generations, Dongfang not only made the flat slot antenna a bad street, but the phased array antenna was also a bad street, and the 18 shields on the aircraft carrier did not know how many people were envious.

We must have more advanced technology, what is it called? He'll have to think about it.

"Xiao Feng, Xiao Feng, Mr. Qin, Mr. Qin?" Lin Lao next to him pushed Qin Feng, this work has already been reported, and he specially told you again, what are you doing now? I don't seem to be listening, but dozing off next to it!

"Don't bother me!" Qin Feng glanced at Lin Lao, and then continued to ponder, letting you disturb and forget what you just thought of...... Wait, it's all remembered!

Lin Lao was a little embarrassed, saying no, not saying no, at this time, Qin Feng's eyes lit up.

"The flat slit antenna requires high precision, high welding rate, and aluminum alloy is not easy to weld, so the difficulty in the development of this radar antenna is how to ensure the welding rate and reduce the deformation caused by welding." Qin Feng said: "The salt bath brazing process is commonly used in the world, the process is complex, polluting and energy consumption, and it completely depends on the technical proficiency of the workers, so it should be eliminated, and we must use more advanced technology." ”

Everyone's eyes widened, this is already the most advanced technology, and Mr. Qin actually has an advanced process?

"Mr. Qin, what kind of technology is it?" Zhang Gong asked very seriously.

"In the vacuum brazing process, we use AI-SI-MG brazing metal to make a 0.1 mm thick foil strip and process it into a shape that matches the brazing surface. First, an electric welding machine is used for assembly and positioning, and then the antenna is put into a vacuum brazing furnace as a whole, and the temperature is raised to 600 degrees, and all welding is completed at one time. ”

This is like soldering circuit boards, in the previous electronics factory, it was necessary to manually solder one by one, which was inefficient, and there may be missed soldering and virtual soldering, and later, after all the components were inserted into the circuit board, the circuit board was put into the molten solder pool, put it in and then taken out to cool, and all the solder joints were soldered at one time!

In the past, welding a flat slot antenna required workers to weld under the microscope little by little to ensure that all welds were welded in place, but now? Assemble it, weld it all at once, and you're done! High efficiency, small deformation, can be mass-produced!

"Mr. Qin, after welding, the weld will become thinner, if there is no external force...... "After Zhang Gong's words came to this, he suddenly thought of something: "We can use elastic tooling to add a pressing mechanism outside, after the brazing metal is melted, the structure can be settled, and it can be pressed up, which can not only ensure the quality of brazing, but also ensure the flatness of the internal components......"

Zhang Gong is engaged in technology, and soon thought of a solution to the problem by himself, and it is more suitable!

Layer by layer of brazing filler metal into it, after melting, it will inevitably reduce the thickness, the outside is clamped with a few clips, just can be pressed, simple and direct, the processing quality is good!

"Mr. Qin, you are simply a genius!" Zhang Gong was very emotional, she had foreseen that with the technology that Qin Feng said, she could produce flat slot antennas in large quantities, and the price was very cheap!

"No, no, I'm just trying to get an idea, and there are many processes that need to be cleaned, including degreasing, alkali washing and pickling passivation, as well as acetone cleaning, drying, and so on. Assembly and positioning also need to be studied by you. ”

"Mr. Qin, we will study according to this idea, and we will definitely be able to mass-produce flat slot radar antennas in the future!" Zhang Gong's words trembled with excitement, she had already seen that beautiful prospect.

"Well, when the process is overcome, we will be able to produce it in large quantities, not only airborne radar, but also the seeker of active radar-guided missiles, we can not only use it for our own use, but also export, if you want, I will go to Europe to pull some business for you."

It was only in the mid-nineties that the Europeans overcame the processing problem of flat slot radar antennas, and now we can make it out and produce it in large quantities, so that it can be supplied to the European market! When the time comes, a flat panel antenna will be sold for $100,000, which is easy.

"Okay, Mr. Qin, let's wait for you to pull business for us and subsidize the welfare benefits of our 14 institutes." Ben Lao said with a smile.

"By the way, you have other problems, right? Tell Mr. Qin, he must have a good idea. Lin Lao was also very satisfied.

"By the way, Lin Lao, if we can produce it ourselves, don't we need to import it from the United States?" Someone else spoke.

Across the ocean.

When Pelehaq returned to Grumman, he immediately brought in Stephen, a representative of Westinghouse Electric.

"Sixty sets of radar and fire control systems, as well as inertial navigation systems, this is a big business, and the price is $400 million, and we must promote the government's approval as soon as possible and complete the export as soon as possible." Pelehaq said.

The price offered to him by the Oriental was 500 million, and when he turned around, he quoted 400 million, and the difference of 100 million dollars went into the pocket of Grumman.

Stephen frowned: "Pelehak, could there be any problems in this?" ”

"What could be the problem?"

"The East is a country that likes copycats the most, and they got our equipment, will the copycats come out exactly the same? For example, they keep claiming that the plane of the Strong Six is exactly the same as your Tomcat. ”

Pelehack smiled: "They are at most a copycat appearance, what else can the Orientals do?" That is, to build a shell, our fighters not only have shells, but also various internal equipment, they can't come from copycats, their strong six? The variable sweep wing should be manually adjusted like Lao Maozi, it can't be compared with ours at all, the equipment you provide is a sophisticated electronic device, how can the Oriental people come out of the copycat, these sixty sets are just the beginning, they may want more in the future. ”

Stephen is still a little uneasy, after all, how to install the radar of a light fighter on a heavy fighter, how to listen to it, why would the Orientals do this?

However, there is also a point in what Pellehaq said, sophisticated radar is not so easy to imitate.

"Needless to say the advanced chips for post-processing, even the radar antenna in front of it, the Orientals can't produce it, the Europeans can't make it, without the advanced antenna, there will be no advanced radar, Stephen, you can rest assured!" Pelehaq patted his chest: "I can guarantee that within twenty years, it will be impossible for them to master the production process of this advanced airborne radar." ”

"Okay." Stephen nodded: "This is indeed a big business, we will go through the formalities as soon as possible." ”

No one will believe that Dongfang can come up with such advanced equipment, in their eyes, Dongfang is still that technologically backward country, but they don't know that Dongfang has been quietly changing, because of a person.

Qin Feng was still talking in the conference room.

"Of course not, the technology of AWG-9 radar is still very backward, it uses a mixed circuit of analog and digital, although the APG66 radar detection range and other indicators are not as good as the former, but it uses an all-digital circuit, and the signal processing ability is very strong......"

"Yes, the chip used on it is indeed very strong, and if we imitate the APG-66 level radar, the chip will be a big challenge." Ben Lao also frowned.

"How's the flakes?"

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