Chapter 1092: Flying
The explanation on Chang Haonan's lips was an understatement.
But even if Shen Junrong is not an expert in the field of satellite structural design, he can still imagine how complicated calculations and exquisite designs are hidden behind this simple rhetoric.
Although there are only a few small satellites weighing hundreds of kilograms, some of the technologies included are no less than those of large satellites weighing several tons.
However, he did not ask for more specific technical details.
First of all, it is not 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 impossible to come in and out casually, the media and even some organized visiting groups can come in.
This is not the place to discuss issues in depth.
"So...this is also preparing for the future relay communication network?"
Shen Junrong asked a less sensitive question while looking at the time displayed on another screen next to him.
One hour and twenty minutes.
As far as attitude adjustment is concerned, this is already very efficient.
"That's not true."
Chang Haonan shook his head:
"Even if it is a complete relay communication network covering the world, the main force will be hundreds of kilograms, and the maximum cannot exceed one ton of small and medium-sized satellites. In fact, it will not face the problem of excessive flexural vibration that affects the working condition of the equipment. ”
"That……"
Shen Junrong looked curious.
"Be prepared for any trouble..."
Chang Haonan put down his headphones as he spoke, stood up and prepared to stretch his muscles.
The technical indicators of the four satellites of the Qingluan constellation are exactly the same. The successful completion of attitude adjustment No. 02 has verified the feasibility of the entire technology. The risks and pressures of the following three satellites will be much smaller.
"At the moment, the mainstream structure of satellites is still in the form of a central rigid body-flexible attachment. However, as the functions of spacecraft continue to diversify, the structure will develop to fully flexible sooner or later. For example, Japan plans to launch ETS-VIII in 2005-2006. The engineering test satellite has a deployable antenna with a size of 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, but the satellite is limited by its own size and cannot There may be a central rigid body of large enough size, and it is difficult to meet the stability requirements of the system by passive dampers alone..."
"..."
In a word -
It will definitely be useful in the future, so let’s test it now as a technical verification.
This idea was actually very familiar to Chang Haonan when he was working on the turbofan 10.
The entire model of Turbofan 9A was almost tinkered with in advance like this.
Luan Wenjie had been the deputy director of the Science and Technology Commission, so he was used to this, so the Qingluan Constellation project was passed as usual.
But for Shen Junrong, who has less exposure to the aviation business, it still seems a bit radical.
The old man stared at the two pictures on the screen that had returned to stability for a long time before finally accepting Chang Haonan's statement.
"Okay...if our space station also uses a truss structure in the future, this technology may also be needed to generate heat..."
He thought so.
Then when he was about to say something, his whole body suddenly trembled and he coughed violently.
At this time, Chang Haonan suddenly remembered that after the success of the Shenzhou-5 mission in his previous life, Shen Junrong seemed to be hospitalized due to long-term and high-intensity work...
At the same time, in the media preparation area located in the corner of the hall, several staff members have also debugged the equipment and are testing the viewing effect facing the interior of the command hall while waiting for the next important time node.
Although there are still about three hours to work in the middle, no one is willing to close their eyes and rest for a while——
Soon, the first Chinese 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 juncture, let alone rest, even blinking would feel like a waste.
Soon, a reporter from station C noticed Chang Haonan and Shen Junrong who were communicating.
"That person over there... seems to be Chang Haonan, Professor Chang?"
"who?"
The companion next to him obviously didn't react.
"The chief planner of the Aerospace Power Group, the one who won the Fields Medal before... is said to be one of the most popular candidates for this year's academician election..."
The first person replied intently:
"If I can be selected, I should be the youngest academician..."
The latter also thought of the name at this time, but was still a little confused:
"But... he is also related to Shenzhou 5?"
"Who knows... It's not surprising for those of them who are engaged in mathematics to participate in any project."
The reporter said as he took out the interview plan from his coat pocket:
"After the launch mission is over, I am going to find an opportunity to interview him..."
…
Two hours later, it is three o'clock Beijing time.
As the last Qingluan 01 star completed its attitude adjustment, the entire relay communication constellation finally completed its preparation for manned space missions.
It's strange to say that Chang Haonan was so focused on the satellite before that he didn't feel it too obviously, but now that the constellation is ready and he has some free time, he looks at the rocket on the big screen ready to go again, and he feels a little more nervous for no reason.
Now, he understands why Shen Junrong came to chat with him just now.
However, as a technician who is independent of the 921 project, Chang Haonan can only be patient and wait for the launch time to come...
At 5:20, the astronauts' departure ceremony was held in the Wentian Pavilion of the astronauts' apartment, and the three astronauts of the first flight team made their public appearances.
"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 resounding words rang out.
But the crowd around was silent.
Only occasionally a crisp shutter sound was heard.
Everyone standing here knows it.
Although the reliability of the entire system has been refined during the design
Although four successful unmanned tests have been carried out.
Although the state of the ship-rocket combination has been adjusted to the best.
Although...
There may be 10,000 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 scientists, so we are naturally not superstitious.
But it is indeed unlikely that the Columbia accident at the beginning of the year had no psychological impact on everyone.
Even Chang Haonan, who was in the command center, was inevitably affected by the atmosphere at this time, and some of his palms were sweating.
On the contrary, the astronaut himself looked normal.
After a brief greeting and interview.
At 6:15, the astronaut entered the spacecraft return capsule with the assistance of the staff and began to carry out various cabin inspections and preparations before launch.
In the next two hours, about 100 operations will need to be carried out.
On a screen in the command center, his physiological parameters were shown to be normal.
Even his heartbeat was maintained at the usual 60 beats per minute.
Faced with this number, Chang Haonan had nothing to say except "admiration"...
8:30.
"Attention, everyone, I am No. 0, 30 minutes to prepare..."
The voice of No. 0 commander sounded.
From this point on, astronauts, spacecraft, rockets, launch site systems, navigation area measurement and control communication systems and other major systems must obey his orders.
The leaders who watched 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 had all been opened, revealing the slender and graceful figure of the Shenzhou V ship-rocket combination.
20 minutes before launch.
Including 12 measurement and control points including four offshore survey ships, and the two remote sensing centers in Danzhou and Gaojing respectively made the last situation report before launch.
Everything is normal.
15 minutes before launch.
The refueling system stopped working, the rocket was unlocked, and the last batch of staff on the tower evacuated.
5 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 supply was transferred from the ground to the arrow.
This is also the last step before launch.
Next, it was a short but long wait...
90 seconds, like 90 hours.
Even as a bystander, Chang Haonan felt a little dazed, his eyes staring at the screen in the return capsule, but his mind had already wandered away.
"5, 4, 3, 2, 1..."
It was not until the commander No. 0 counted down the final seconds that he was pulled back from his thoughts.
When the final command of "launch" was reported, Chang Haonan noticed that Shen Junrong's hands, not far away, suddenly clenched into fists...
As the screen of the return capsule trembled slightly, on another screen, the rocket took off into the air with a thunderous roar, dragging orange-red flames and flying rapidly into space.
This is not the first time Chang Haonan has seen such a scene.
But only this time, he even forgot to breathe for a while.
A few seconds later, the exact time of this launch was heard again.
"Emission time, 09:00:03:497 milliseconds..."