The military-industrial scientific research system of the academic master.

It is not known who of the couple had the final say, but in any case, the U.S. Air Force actually scheduled the first flight test of the X51A on April 2007, 4.

It was exactly 100 days after Chang Haonan’s daughter Chang Qihe was born.

After learning the news, Chang Haonan only made one comment:

"They are pretty nice people..."

Actually, there is a little episode about the child’s name.

Influenced by the experience of many predecessors and colleagues, Yao Mengna warned Chang Haonan many times during her pregnancy that she would never allow him to name the child "Chang Gaochao" or any similar names.

This is definitely not groundless worry caused by pregnancy anxiety.

In fact, one of their colleagues was named Lin Fubian, because when he was born, his father had just participated in the research and development of China's first hydrogen bomb...

Fortunately, Chang Haonan does not have such an obsessive project that requires a lifetime to complete, so there is no need to use the child's name to commemorate anything.

Finally, with Du Yishan's suggestion and Zhou Li's approval, they chose Chang Qihe as the child's name, which means "Qihe soars into the vast clouds and flies high into the sky."

However, compared to the couple who just treated this as a minor episode, the X51A, as the world's first publicly weaponized hypersonic aircraft, its first test still attracted considerable attention.

At this time in 2007, the scale and business model of the Internet industry had gradually begun to mature, and had also led to some push algorithms similar to the hot searches of later generations.

Compared with the passive information transmission channels mainly based on forums in the early years, this type of algorithm will actively put information in front of users.

Many topics that were originally only paid attention to by a specific group of people will be promoted to more people as long as they have enough clicks and discussions, thus forming positive feedback, gaining more clicks and discussions, and then entering the next round.

It’s just that there is currently a lack of sufficiently lightweight platforms like Weibo or short videos, so it can only be presented through search engines or web navigation.

But even so, it is like a dimensionality reduction attack for traditional media.

Many of the more responsive TV programs have begun to formulate themes based on online popularity, and then use their resource advantages to invite some professionals to strive to win with the depth of content.

Although only some of these guests are experts and most of them can only be regarded as "experts", it does not affect people's enthusiasm for watching this type of program.

Even Chang Haonan, who can truly say "No one knows more about hypersonics than me", is no exception. During his paternity leave, he often turns on the TV to see how the outside world analyzes and evaluates things related to the projects he is working on.

Perhaps because this hobby is indeed a bit strange, more than one person expressed his confusion about it.

This also included Zheng Liangqun, who went to Chang Haonan's house to congratulate him on the birth of Xiao Qihe and the coming of the Spring Festival.

He placed the gifts he had brought at the door, and before he had taken two steps, he saw on the TV screen an evening military program that specifically analyzed the feasibility of "conquering the world within an hour."

Then, as expected, he showed a shocked expression, with his eyes widened.

After being stunned for a while, he spoke with doubt:

"I'm not saying... Is there anyone on earth who knows better than you whether this is feasible or not?"

"Well... just think of it as a way of looking at things from a different perspective."

Chang Haonan poured tea while motioning for the other party to sit down:

"What if I can hear something new? It won't take much energy anyway..."

In fact, he also thought about this somewhat inexplicable hobby of his.

The final conclusion is that it is probably equivalent to some public figures in later generations who like to conduct high-intensity self-search.

Human nature.

Zheng Liangqun shook his head and said half-jokingly:

"It seems that I have to ask the publicity department to issue an instruction after I return, telling the researchers to pay attention to accuracy when participating in this kind of publicity in the future. There may be an academician in the audience, so we have to be careful..."

Chang Haonan just smiled after hearing this, and placed two cups of tea in front of the two of them. He did not continue on this topic, but changed the subject:

"Old Zheng, you came to see me at this time, I'm afraid you don't just want to chat..."

Thanks to the achievements accumulated from the Bat Hunter Project and the 50th National Day Parade, Zheng Liangqun was successfully promoted to Chief of Staff of the Air Force a year ago.

Of course, the fact that he and Chang Haonan were so close that he visited Chang Haonan to congratulate him without even saying hello had nothing to do with the appointment of this position.

After all, in the latter’s current circle of friends, a military chief of staff is not ranked at the top.

It was because Chang Jiayao and Zheng Hui had reached the stage of discussing marriage, and were just waiting for the time when they were both free to get the marriage certificate and then find a good day to hold the wedding.

In fact, logically speaking, the father of my future brother-in-law should be considered an elder.

However, Chang Haonan and Zheng Liangqun knew each other too early, and they were both insignificant figures back then, so they were used to being treated as peers...

So the most embarrassed person here became Zheng Hui——

"My wife's brother and my father are brothers. What should I do? I'm waiting online. It's urgent..."

In the end, we can only discuss our own issues.

After hearing what Chang Haonan said, Zheng Liangqun showed an expression of surprise and sadness:

"What are you talking about? Can't I just come to see... to see Qihe?"

He originally wanted to say he wanted to see his eldest niece.

But if this is said, Chang Qihe will have to call Zheng Hui "brother" and Chang Jiayao "sister-in-law"...

"It's all because this kid is too young...otherwise there wouldn't be such a messed up relationship."

Zheng Liangqun told himself this in his heart.

Chang Haonan curled his lips, totally disbelieving the other party's explanation, and pointed to several boxes not far away:

"Here, these are all the things that your Air Force distributed during the Spring Festival. I'm afraid you just brought them from the office... You told me that you came here specifically to see Qi He?"

"Well indeed..."

Zheng Liangqun was not embarrassed at all after being exposed by this sentence. He lowered his voice and got to the point:

"It really is related to the hypersonic vehicle that the Americans are preparing to test-fire."

Chang Haonan stopped picking up the teacup:

"Actually, there's no need to worry too much... Although hypersonic weapons are a big threat, I can guarantee that within five years, your H-6 will be able to be equipped with mass-produced air-breathing hypersonic weapons earlier than the US military's B52."

Zheng Liangqun waved his hand and explained in a deep voice:

"It's not that we're worried. Everyone is optimistic about your work efficiency... It's just that the higher-ups want to take this opportunity to let the Americans experience the feeling of being watched throughout a weapons test."

As a ruthless man who had personally shot down a MiG-25 while flying a plane, he said this with great momentum, and at the end he slammed the armrest of the sofa.

It was as if at any moment a sentence might pop up: "If the enemy can go, I can go too!"

Chang Haonan also became interested instantly and sat up straight:

"Keep an eye on it...Does that mean you're prepared to follow this test throughout?"

According to information released by the Pentagon, this X51A flight test will be conducted over the Pacific Ocean.

If you want to conduct reconnaissance, it means sending an entire fleet out of the first island chain.

This is different from usual training or visits.

It is a real combat mission, but no conflict is expected.

The last time China did something like this can be traced back to Mission 580 more than years ago.

"The specific mission objective has not yet been determined, but we must at least capture a key part. Of course, it would be best if we can track the entire process..."

Zheng Liangqun stroked his chin and organized his words a little:

"It's just that we haven't done anything like this before, so the comrades from the navy asked me to ask you, if the target is non-cooperative and there is even the possibility of interference, can we rely on at most two 052C destroyers to complete the observation of the entire test launch process?"

After finishing speaking, perhaps because he felt that it was not clear enough, he added another sentence:

"Although I am not a navy officer, I flew a fighter jet in my early years and I know a little about radar. They are mainly worried about the black barrier shielding layer produced by hypersonic aircraft and the Doppler dispersion problem..."

Since various technologies have not encountered any insurmountable obstacles and economic development has far exceeded expectations, the navy has also had a batch of new ships with good performance over the years.

The first two 052C ships that entered service have already undergone a total of tens of thousands of nautical miles of navigation tests, verifying the stability of the new power system with QC300 as the core, and creating an opportunity for the construction of a second batch of up to six ships of the same type.

This is also the confidence to carry out this ocean-going mission.

After a brief moment of excitement, Chang Haonan regained his composure and did not give a clear answer immediately.

After a few minutes, he slowly opened his mouth and said:

"The verification speed of X51A is about Mach 6, so there is no need to consider the issue of black barrier shielding. As for Doppler dispersion..."

He thought for a moment:

"That's true... According to our research, when the Doppler dispersion product is greater than 1, the output gain of the matched filter will decrease, the main lobe width will become wider, and the target resolution performance will decrease... For targets flying in the atmosphere below 30000 meters, this critical value is about 2000-2500m/s, which is very close to the flight speed of the X51A. Considering that the opponent may launch interference, our fleet cannot be too close to the test area..."

"That……"

Zheng Liangqun's face showed a bit of anxiety, and he was obviously eager to hear the result.

"I suggest adding a submarine to the fleet..."