Chapter 1042 Air Police 2000 Data Link Antenna
Under Wu Wenjun’s urging, Chang Haonan finally nodded.
He originally thought about whether he should donate part of the prize money as a sponsor in his own name, but he was rejected by the former.
According to Academician Wu, the fact that Chang Haonan can agree to give his name is much more important than money.
As for the money issue...
The Chinese mathematics community is a bit poor, but it is not unable to support a scholarship that is expected to have no more than 10 winners each year.
Thus, the "Regular Prize", which will become famous in the Chinese theoretical research community in the future, was determined in a seemingly random manner at the opening ceremony of the 24th International Congress of Mathematicians.
A scholarship is naturally a trivial matter compared to the previous hard work of establishing a mathematics research center.
Chang Haonan doesn’t even need to do anything himself.
Just interview some of the final candidates every year.
If you really can't spare the time, you can entrust others to do it, or you can do it online in a few years.
This is indeed more friendly to him.
Therefore, after giving a one-hour report on the morning of the second day of the opening ceremony, Chang Haonan went missing again and did not participate in other subsequent activities of this conference.
Fortunately, the mathematics community is used to this kind of situation, and after all, there are still two "normal people" among the four Philippine Prize winners, so this incident did not cause too big a stir...
In fact, Chang Haonan had already received a large number of invitations in the afternoon after receiving the award.
Just like when the Poincaré conjecture was proved two years ago.
After all, people at home and abroad are quite enthusiastic about giving hats to celebrities in academic circles to gain popularity.
Various honorary degrees, honorary teaching positions, awards that you may or may not have heard of...
It’s dazzling.
It’s hard to say how repulsive Chang Haonan is to this kind of behavior.
What's more, many of them said that they can be awarded remotely according to Professor Chang's personal wishes, or they can be directly expedited and go through the awarding process at the International Congress of Mathematicians.
If he could really get a degree or even a teaching position from a top university like MIT, Princeton or Stanford, he would still be willing to accept it.
However, after the report was completed, he received news from Hao Jing.
The installation stage of the in-cabin equipment of the Air Police 2000 has come to an end——
In addition to the large antenna on the back of the aircraft, the early warning aircraft also needs to install a radar rear end in the cabin, and A complete set of data processing and command and control systems.
The gadgets are okay, but many of them are bulky and not easily removable, making it difficult to get them straight in through the cabin door.
For the transport aircraft platform, it can still be sent in through here before the tail hatch is sealed.
But as the Tu-214K is a passenger aircraft, and it is a passenger aircraft that has changed the luggage compartment into a fuel tank, it obviously does not have such conditions.
It can only be put in through the skin opening on the back of the aircraft before the disc radome is installed.
For the Air Police 2000 prototype, which has entered the high-speed stage of modification and changes almost every day, this time window will obviously not be very long.
Moreover, Haofei knew that Chang Haonan was attending the International Mathematics Conference.
If you contact me in the middle of this situation, there is a high probability that there are some problems that need to be solved by him, but it is just not convenient to talk about it on the phone.
Therefore, after careful consideration, Chang Haonan returned to Haojing before the conclusion of the International Congress of Mathematicians.
……
December 18th.
In the cold wind of winter, Chang Haonan, surrounded by several entourage members, walked into the final assembly workshop of Haofei Group.
It is not the one that was modified before.
It was used to assemble the H-6 in the past.
After all, although the 110-ton platform is not very large when placed in a passenger aircraft, it is definitely a giant if it is thrown into a tactical aircraft.
In fact, even this current workshop has undergone some equipment modifications.
Otherwise, there is no way to install a huge radome with a diameter of 10 meters on the aircraft.
Today is also the first time that Chang Haonan has seen the appearance of the equipment in the Air Police 2000 cabin relatively completely.
"Mr. Chang."
Liang Shaoxiu, wearing work clothes, came forward and shook hands with Chang Haonan warmly:
"I just happened to be in time to start the project the day before yesterday. During the seminar, I specially asked someone to record the part where you accepted the award..."
He looked obviously thinner than the last time we met. It was obvious that he was under a lot of work pressure during this period.
In fact, the Air Police 2000 is the only major model in recent years that Chang Haonan has not participated in the aerodynamic and structural design at all. Moreover, Liang Shaoxiu, as a technician from Nanzheng, is now in charge of a project on the border of Haojing. Even if the two parties have always had a close relationship, it is difficult for them to act as freely as if they were at home.
“It’s not that it’s not that...”
Chang Haonan put on the work clothes handed over by the other party and waved his hand:
"Just some thoughts, nothing special worth recalling..."
"If you really want to read it, you might as well read the report I made yesterday morning."
"Ugh..."
Liang Shaoxiu showed a free and easy smile:
"The part in the opening ceremony can still make my children happy, how can the report be understood..."
The content of Chang Haonan's report involves the most cutting-edge abstract topics in the field of differential geometry. Even mathematicians may not be able to understand it. As an aerospace engineer, Liang Shaoxiu is indeed a bit difficult to understand.
"Let's go and have a look at the plane."
As Chang Haonan changed into work clothes, the two of them ended their chat and returned to the topic.
Led by Liang Shaoxiu, a group of people immediately came to the Air Police 2000, which had entered the most critical stage of modification.
The huge disc-shaped radome is placed here, waiting for final installation.
"Mr. Chang, we have tested three data link antenna installation solutions respectively."
Liang Shaoxiu introduced:
"Just judging from the communication effect, if it is mainly for satellite communication, then directly Installing an additional antenna on the top of the radome is the option that has the least impact on the entire aircraft design, but since there has not been time to conduct electromagnetic compatibility testing, this solution is not feasible in terms of cycle time.”
“We have not yet had time to conduct electromagnetic compatibility testing.” An extra mushroom-shaped space has been reserved at the top of the radome. When the mass-produced Air Police 2000 enters service, this solution should be directly used."
"But on the prototype..."< br>
He took a step forward and came to the plane with a large piece missing on the back:
“Considering the need for direct communication, we plan to set the antennas at the top of the vertical fin and under the nose to cover them respectively. communication requirements for the upper and lower hemispheres, and at the same time keep the data link antenna as far away from the radar antenna as possible to reduce the trouble caused by electromagnetic compatibility..."
"..."
Liang Shaoxiu followed Chang Haonan throughout the whole process. Technicians who have grown up doing projects, so they can execute instructions without compromise.
After hearing this, the latter nodded with satisfaction.
"But..."
At this moment, Liang Shaoxiu suddenly said solemnly:
"Mr. Chang, during the testing process, we also accidentally discovered some new problems..."
“The reason why I am so anxious to call you back this time is because of this incident.”
Chang Haonan stopped.
It was indeed the same as his guess yesterday.
"Don't be afraid if there are problems."
As he said this, he turned back and looked at Liang Shaoxiu behind him:
"Ground testing is meant to discover problems..."< br>
“That’s right.”
Liang Shaoxiu breathed a sigh of relief:
“Previously, the communication system of Air Police 2000 included 2 high-frequency and 3 ultra-high-frequency radio stations. Because only voice communication was required, the selection method of communication protocol was It’s relatively simple, just determine it based on different transmission distances.”
“But now, because of the need for command through data links, the types of communication systems have more than doubled than in the past. It also involves wide and narrowband over-the-horizon voice, data communication links, external tactical databases and other information categories, as well as shortwave adaptive frequency selection, extended frequency hopping anti-interference, digital confidentiality, digital information exchange, etc. Different anti-interference technologies..."
"Although there is no problem with the performance of each communication system itself, before data transmission, it is necessary to choose different communication methods according to the type of data to be transmitted and the transmission target. Come on, the previous manual communication management system is a bit overloaded.”
“For example, during the ground test, when the early warning aircraft wants to make radio calls with the ground tower at the same time when it is connected to the data link for command. Communication requires communications officers to conduct six groups of operations separately. Not only is the efficiency very low, but misoperations may also occur in actual combat situations..."
"..."
"Well..."
Chang Haonan put his hands behind his back, raised his head and fell into thinking.
The situation Liang Shaoxiu mentioned can be simply compared to difficulty in choosing.
Because there are so many forms of communication, if all decisions are left to people, even well-trained professionals will inevitably make mistakes while busy.
So, he quickly concluded:
“So, we need to design a sub-system protocol to include all internal and external communication, so as to automatically select the appropriate communication form for different data types. and technology...but it cannot be the traditional TCP protocol, or at least it needs to be improved so that it can adapt to non-homogeneous transmission paths..."
"..."
As he gradually analyzed, the eyes of several technicians from the Electronic Technology Group next to him gradually glowed...
(End of this chapter)