Chapter 1060

Ordinary radar beam scanning is realized by the rotation of radar antenna, which is called mechanical scanning. Phased array radar uses electricity to control the direction change of radar beam to scan and find targets. This method is called electrical scanning. Its "unique skill" is to use "phase shifter" to realize the rotation of electromagnetic lobe.

On the circular antenna array of phased array radar with a diameter of tens of meters, thousands of antenna units that can transmit and receive electromagnetic waves are arranged. Each antenna unit is equipped with a "phase shifter", and each "phase shifter" is controlled by an electronic computer.

When the radar works, the electronic computer controls these "phase shifters" to change the "phase" of each radiator transmitting electromagnetic wave into the air, so that the radar wave can complete the air search mission like a rotating antenna.

According to different transmitting devices, it is divided into active phased array and passive phased array. Each unit can certainly receive, but not necessarily transmit.

If it depends on the magnetron emission at the back and the phase shifter at the front, it is passive phased array radar. If the unit can transmit by itself, it is active phased array.

The radar technology of passive phased array is not complex. The large-scale long-range radar in Han country uses this technology, but it can launch and receive by itself. It requires high processing capacity, and there are countless difficulties to overcome.

Qin Guan attached great importance to this technology, because he knew that warships and fighters could not do without this technology, so he also invested a lot of energy.

The relevant technical data have been given to 114 institutes for a long time, and Davidson has been brought together to carry out industrialization. It has been made in the laboratory, but there are great difficulties in industrialization.

Even this technology was used by Qin Guan as a magic weapon and sold to Eagle country. These technologies also played a great role in exchanging Kidd class destroyers for carrying the above standard missiles.

There are differences between laboratory products and factory products. If the factory can not meet the demand of mass production and improve the yield, it can not really realize mass production.

A radar antenna has thousands of transmitting units. If it is only trial produced one by one in the laboratory, the cost is absolutely astronomical.

Now, hearing what director Ben said, Qin Guan immediately asked this question.

Director Ben nodded: "yes, we only broke through last week and controlled the yield to more than 50%. Its volume is still relatively large and can not be used in fighter aircraft for the time being. However, the equipment on shipboard and early warning aircraft has met the conditions, but the superior is afraid of too much risk."

Yes, this is the latest technology, and the risk is considerable.

Look at the development of early warning aircraft. In the first generation, the ground pot cover radar was moved to the sky. It has the lowest efficiency and no down looking ability. It can be used on the sea at most.

Up to now, most of them are the second generation. For example, the most famous E-3 early warning aircraft in Eagle country is equipped with a flat slot antenna on the big plate, so people's board is the thinnest. Relying on this antenna, they can realize strong search ability.

Now, the processing technology of flat slot radar antenna in Han country has been fully mature. If this technology is used, it will have low risk and quick results. It may be available in about five years, which is also the opinion of many experts.

However, director Ben knows that if phased array radar is used, it will be more advanced.

In short, if the phased array radar is installed, the antenna does not need to rotate. It is an electronic scanning method, and the antenna does not need to move. In this way, the impact on the carrier is the smallest. You know, the current Yunshi has not completed the test flight after all.

Just add ten large plates to the transport without rotating, which has the least damage to the pneumatic.

Secondly, because phased array radar adopts electrical scanning, its ability to search airspace is greatly increased, and its ability to track while scanning is very strong. For key areas, it controls more components to scan.

At the same time, its failure rate will be very low. Even if some components fail, the rest can continue to work.

The benefits are great.

Of course, the biggest advantage they can't be sure of now is that due to the adoption of the leading generation technology, the scanning range of the early warning aircraft will have a huge breakthrough.

It can be said that less than twice the effect can also be doubled and a half. If the flat slot radar antenna can control the range of 500 kilometers, then the phased array radar can control more than 700 kilometers!

The experts of institute 114 are all staunchs of phased array radar, while the superiors tend to use mature technology. Now we all expect someone to make a decision.

What technology is used?

What's the point? Phased array technology, of course! If you want Qin Guan to vote, you must vote for phased array radar!

Therefore, Qin Guan went nonstop. After 6603 Institute completed its task, he came to 114 institute again.

It's summer now. Jinling is a lively scene. It used to be the ancient capital of the Six Dynasties, and the banks of the Qinhuai River make countless talented people linger and forget to return.

Although Qin Guan has been here many times, he has no time to enjoy the beautiful scenery here. Although his schedule is very tight, he has never complained.

Because he saw that with his help, the motherland has become stronger day by day. Especially now, the motherland is beginning to catch up with and surpass.

Active phased array radar is one of the essential elements of the fourth generation aircraft. If the R & D of this project is completed, it will reserve enough technology for the fourth generation aircraft. Now it is the only one used in the early warning aircraft.

In later generations, it was not until the late 1990s that the Falcon early warning aircraft of the kingdom of David realized phased array radar, and the kingdom of Han also experienced humiliation in this regard.

Now, Han has begun to lead the times in this regard.

After the airborne radar project, Institute 114 has developed into the largest Electronics Institute in China. For the processing of new phased array radar T / R components, a department has been specially established. The head of this department is also an acquaintance of Qin Guan, Zhang Gong, who is 40 years old.

This is a lesbian. Her specialty is radar high-frequency element technology and mechanical fire control radar flat slot antenna technology.

A few years ago, she innovated the clamping method of combining high-precision vacuum adsorption and magnetic adsorption to solve the clamping problem of high-precision and large-area aluminum thin-walled parts; New technologies such as numerical control machining and chemical milling are adopted to remove cutting burrs, so as to ensure the high size and position accuracy of thousands of crack slots and waveguide cavities; The pestle head connection assembly process is adopted to ensure the high-precision assembly quality, and lays a foundation for ensuring the quality of brazed weld and controlling welding deformation.

The processing of flat slot radar antenna can not be separated from her help. Now, she has devoted herself to the antenna processing technology of phased array radar.

"Mr. Qin, welcome to visit." Zhang Gong was very happy with the arrival of Qin Guan. She remembered that her party went to the North heavy truck factory for help. At that time, thanks to the assistance of Mr. Qin, she completed the development of the previous generation of radar. Now, her party has finally started the research and development of phased array radar. She also has to thank Mr. Qin.

Zhang Gong picked up a small slice and said to Qin Guan, "President Qin, this is a T / R component produced in our factory."

Qin Guan couldn't combine this slice with the phased array radar antenna in his mind. In fact, Qin Guan was not professional. In his idea, he thought it was the same as the large flat antenna seen in the magazine. How could it be such a small slice?