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

Chang Haonan's explanation was characterized by understatement.

But even if Shen Junrong is not an expert in the field of satellite structure design, one can still imagine how complex calculations and sophisticated designs are hidden behind this simple statement.

Although they are just a few small satellites weighing hundreds of kilograms, some of the technologies they use are in no way inferior to those of large satellites weighing several tons.

However, he did not ask for more specific details on the technical level.

First of all, it is not within my professional scope.

Secondly...

The command and control hall of the launch site sounds very grand, but it is actually a semi-public place.

Although it is not possible to enter and exit freely, the media and even some organized visiting groups can come in.

This is not the place to discuss the issue in depth.

"So... this is also a preparation for the future relay communication network?"

Shen Junrong asked a less sensitive question while looking at the time displayed on another screen nearby.

One hour and twenty.

In terms of posture adjustment, this is already very good efficiency.

"That's not true."

Chang Haonan shook his head:

"Even if it is a complete relay communication network covering the entire world, the main force will be in the hundreds of kilograms level. The largest satellite will not exceed one ton. In fact, they will not face the problem of excessive flexural vibration affecting the working condition of the equipment."

"That……"

Shen Junrong looked curious.

"It's better to be prepared..."

Chang Haonan put down his headphones and stood up to stretch his muscles.

The technical indicators of the four satellites of the Qingluan constellation are exactly the same. The successful completion of the attitude adjustment of No. 02 has verified the feasibility of the entire technology. The risks and pressures of the next three satellites will be much smaller.

"At present, the mainstream structure of satellites is still the form of central rigid body and flexible appendages, but as the functions of spacecraft continue to diversify, the structure will sooner or later develop into a fully flexible one. For example, Japan plans to launch the ETS-VIII engineering test satellite in 2005-2006, which will have a deployable antenna about 20 meters on one side, which is almost completely inconsistent with the traditional configuration."

"In the future, larger satellites may adopt a truss structure like the International Space Station. The current solution is to use viscoelastic damping rods to achieve passive vibration suppression. However, due to the size of the satellite, it is impossible to have a large enough central rigid body. It is difficult to meet the stability requirements of the system by relying solely on passive dampers..."

"..."

In a nutshell -

It will definitely be useful in the future, so let’s test it now as a technical verification.

Chang Haonan had already mastered this idea when he was working on the WS-10.

The entire model of the WS-9A was almost developed in this way in advance.

Luan Wenjie, as a leader who had served as deputy director during the Science and Technology Commission era, was no longer surprised by this, so the Qingluan Constellation project was approved as usual.

But for Shen Junrong, who has little contact with aviation business, it still seems a bit radical.

The old man stared at the two pictures on the screen that had returned to normal for a long time before he accepted Chang Haonan's statement.

"That's fine... If our space station also uses a truss structure in the future, perhaps this technology will also be needed..."

He thought so.

When he wanted to say something else, he suddenly trembled and started coughing violently.

At this time, Chang Haonan suddenly remembered that in his previous life, after the success of the Shenzhou V mission, Shen Junrong seemed to have been hospitalized due to long-term high-intensity work...

At the same time, in the media preparation area in a corner of the hall, several staff members have already debugged the equipment and are testing the framing effect inside the command hall while waiting for the next important time node.

Although there were still about three hours of work to go, no one was willing to close their eyes and take a break.

Soon, the first Chinese person will leave the earth and enter space.

China will also become the third country in the world to independently master manned space technology.

At this critical juncture, let alone taking a rest, even blinking would feel like a waste.

Soon, a reporter from Station C noticed Chang Haonan and Shen Junrong who were communicating.

"The one over there... seems to be Chang Haonan, Professor Chang?"

"Who?"

The companion next to him obviously didn't react.

"The chief planner of the Aviation Power Group, who previously won the Fields Medal... is said to be one of the most popular candidates for the election of academicians this year..."

The first person answered without blinking:

"If I can be elected, I will probably be the youngest academician..."

The latter also thought of this name at this time, but was still a little puzzled:

"But... is he also related to Shenzhou V?"

"Who knows... For those of them who are good at math, it's not surprising for them to participate in any project."

The reporter took out the interview plan from his coat pocket:

"After the launch mission is over, I plan to find an opportunity to interview him..."

……

Two hours later, it was three o'clock Beijing time.

With the last Qingluan 01 satellite completing its attitude adjustment, the entire relay communication constellation has finally completed its adaptation preparation for manned space missions.

It's strange to say, Chang Haonan was concentrating on the satellite before and didn't feel it too obviously, but now that the constellation was ready and he had some free time, he looked at the rocket ready to take off on the big screen again, and he felt a little more nervous for no reason.

Now, he finally understood why Shen Junrong came over to chat with him just now.

However, as a technician outside the 921 Project, Chang Haonan could only be patient and wait for the launch time to come...

At 5:20 a.m., the astronauts' departure ceremony was held in Wentian Pavilion, the astronauts' apartment, and the three astronauts of the first flight team made their public appearance.

"Comrade Commander-in-Chief, I have been ordered to carry out the first manned spacecraft flight mission. I am ready and ready to go!"

The astronaut's powerful words rang out.

The people around were silent.

Only occasionally could the crisp sound of shutter clicks be heard.

Everyone standing here knows it.

Although the reliability of the entire system has been carefully designed

This is despite four successful unmanned tests having already been conducted.

Although the state of the ship-rocket combination has been adjusted to the best.

although……

There may be ten thousand reasons to ensure the safety of this mission.

But no matter what, manned space flight is bound to be accompanied by huge risks.

Especially at this moment.

We are all engaged in science, so naturally we are not superstitious.

But it is indeed unlikely that the Columbia accident at the beginning of the year had no impact on people's psychology.

Even Chang Haonan, who was in the command center, was inevitably affected by the atmosphere and his palms were sweating.

On the contrary, the astronaut himself looked normal.

After a brief greeting and interview.

At 6:15, with the assistance of the staff, the astronauts entered the spacecraft's return capsule and began various cabin inspections and preparations before launch.

About 100 more operations need to be performed in the next two hours.

A screen at the command center showed that his physiological parameters were normal.

Even the heart rate remained at a normal 60 beats per minute.

Faced with this number, Chang Haonan had nothing else to say except "admiration"...

8:30.

"Attention everyone, I'm number zero, 30 minutes to get ready..."

The voice of Commander Zero sounded.

From this point on, all major systems including astronauts, spacecraft, rockets, launch site systems, flight area measurement and control communication systems must obey his orders.

The leaders who were watching the launch mission on site then entered the hall one after another.

The air at the entire scene gradually solidified.

At this time, the three sets of rotating towers that were originally tightly closed have all opened, revealing the slender and graceful figure of the Shenzhou V ship-rocket combination.

20 minutes before launch.

Twelve tracking and control points, including four offshore survey ships, and the two remote sensing centers in Danzhou and Gaojing respectively made their final situation reports before the launch.

everything is normal.

15 minutes before launch.

The fueling system was shut down, the rocket unlocked, and the last crew members on the tower evacuated.

Five minutes before launch, the commander-in-chief finally confirmed that all systems and equipment were in good condition and finally confirmed the flight parameters.

1.5 minutes before launch, the rocket power is transferred from the ground to the rocket.

This is also the last step before launch.

Next, there is a short yet long wait...

90 seconds, like 90 hours.

Even as a bystander, Chang Haonan felt a little dazed. His eyes were fixed on the scene in the return capsule, but his mind had already wandered away.

“5、4、3、2、1……”

It wasn't until Commander Zero started the final countdown that he was pulled back from his thoughts.

When the final command of "fire" was given, Chang Haonan noticed that Shen Junrong's hands, not far away, suddenly clenched into fists...

As the image of the return capsule trembled slightly, on another screen, the rocket took off into the air with a deafening roar, and flew rapidly into space with orange-red flames.

This was not the first time Chang Haonan had seen a similar scene.

But only this time, he even forgot to breathe for a moment.

A few seconds later, the exact time of the launch rang in my ears again.

"Emission time: 09:00:03:497 milliseconds..."