Chapter 1089 Dongfeng Aerospace City

Summer goes and autumn comes.

In the busy work, time quickly came to September 2003.

Chang Haonan was finally able to get a little relief from the busy work after the new model was just launched.

However, the free time left for him was not too long.

On September 17, the astronauts of the first flight of Shenzhou V entered the site, completed the joint inspection of people, ships, rockets and ground, and fully carried out the launch minus eight-hour procedure drill, which also marked that China's first manned space mission entered the final countdown stage.

According to the plan, the rocket will be vertically transferred to the launch area on October 8 and launched on October 15.

As for Shenzhou V itself, if there is no accident, the plan has been determined and there will be no major changes.

But some other tasks related to the launch still have a lot of room for change.

For example, the data transmission task...

Under the promotion of Zhang Weiyong and Guo Lin and others, the small satellite group named "Qingluan" was launched on a Long March 4 rocket half a month ago and confirmed to be in normal working condition.

But this does not mean that everything is fine.

Only four satellites in the MEO orbit mean that providing stable relay guidance services to the spacecraft must not be stable enough.

Therefore, Guo Lin's previous statement was also the "highest" coverage rate, that is, in a certain circle of the spacecraft, it can reach 50%.

But the mission of Shenzhou V lasted less than a day.

It can only circle the earth 13-14 times at most.

Although the first manned flight was mainly for verification, the specific purpose of each circle was also arranged before the launch.

The specific plan still needs more detailed planning.

Therefore, after a short rest in Gaojing for a few days, he personally rushed to the satellite launch center...

Although the launch base upgraded by China for the 921 project is called Suzhou Satellite Launch Center, part of it is located in the EJNQ area of ​​Meng Province.

In fact, it has a special name.

Dongfeng Aerospace City.

At this moment, Taolai Airport has not even been planned. The nearest airport that can land fixed-wing special aircraft is Dingxin Base.

But there is still some distance.

Therefore, the launch site arranged for Chang Haonan to transfer in Dingxin and take a helicopter to the final destination.

He was quite resistant to this plan at first.

Helicopters, because they fly in the troposphere at a lower altitude most of the time, even the most advanced models have much stronger noise and vibration in the cabin than fixed-wing aircraft.

In comparison, taking a car may be a more comfortable choice.

However, when Chang Haonan really arrived at Dingxin Airport, he still performed a really fragrant performance on the spot-

Parked not far away was a helicopter that obviously belonged to the search and rescue recovery air detachment.

But it was not the Mi-17 that was common on TV in the previous life.

It was a camouflaged Z-12.

That is, the Chinese version of NH90.

This was not the first time that Chang Haonan rode a model that he participated in designing.

He had experienced it once when he was doing ground testing for the relay communication system last year.

But this model, which has been in service for less than three years, was selected to perform search and rescue recovery missions so quickly, which was still somewhat beyond his expectations.

While Chang Haonan was standing at the door of the cabin in a daze, two people in leather coats also trotted to the gangway.

The leader was naturally Guo Lin.

"Mr. Chang."

Guo Lin took two steps forward and took the initiative to greet Chang Haonan, then turned sideways and gestured to another person beside him:

"This is the on-site person in charge of the 22nd Institute of China Electronics Technology, Comrade Song Lei."

Hearing the other party's work unit, Chang Haonan immediately understood.

The 22nd Institute of China Electronics Technology is the technical unit responsible for aerospace search and rescue recovery.

They should be the accompanying staff.

After a brief greeting, the three of them walked towards the helicopter landing pad.

On the way, Guo Lin began to report the current situation:

"General Chang, the Qingluan constellation has conducted two rounds of communication tests with the target spacecraft in the sun-synchronous orbit, and the results fully meet the design requirements. Next, it only needs to make an attitude adjustment after the plan is determined, and it can fully adapt to the relay mission requirements of Shenzhou V."

"It's just that the meteorological department reported that in the mid-October window, the weather over Beijing has been cloudy and cloudy, and it may rain at any time. Do you think, for the sake of safety, do you consider turning the ground measurement and control center to the Shule measurement and control station?"

Since the relay communication system was originally designed to adapt to the space-based remote sensing system, the ground terminal set at the beginning was naturally located in Tanzhou, Beijing.

The measurement and control missions in Beijing generally use the C/S/L bands, which are almost not affected by the weather.

But for the Qingluan constellation that chose the Ka band, it will still bring some risks.

Of course, it will not be directly disconnected, but it is always bad if the whole picture freezes in the middle of the transmission.

The Shule Station in Xinjiang Province wishes there were 360 ​​sunny days a year, so there is no such worry.

Chang Haonan slowed down his pace and thought for a moment.

Finally, he shook his head and said:

"To carry out relay communication tasks, a large amount of equipment needs to be installed in advance. The location of Shule Station is too sensitive. After all, our constellation does not fully serve manned spaceflight, so it is better to avoid it..."

In addition to the well-known internal problems, due to the strong penetration of the United States into Central Asia and the deployment of a large number of military bases and intelligence centers in Aiwuhan, the western region also became one of the regions most severely penetrated by the outside world for a period of time in the early 21st century. one.

Flying over for aerial testing is fine, but transporting sensitive equipment over land is still a bit risky.

"The backup plan..."

Guo Lin also looked embarrassed.

"The high-altitude airship we used for relay communication testing should not be returned yet. If the weather in Beijing is really bad enough that the Ka-band signal cannot penetrate the rainy area, the airship can be used to relay the signal again and transmit the signal to Haojing's 26 Experimental training base..."

"..."

While they were talking, several people had already arrived next to the helicopter that had already been warmed up and prepared.

I have to admit that the three-color camouflage paint on the helicopter does look rather... earthy.

Even if it is the same helicopter, if it is replaced with a later desert color or light gray paint, the appearance can be improved several levels out of thin air.

Song Lei, who had been silent just now, took two steps forward and took the initiative to open the hatch.

Chang Haonan held on to the brim of his hat and ducked in.

He looked around in the cabin and finally determined that the aircraft's comfort configuration should be fully loaded according to European standards.

A proper VIP plane.

Obviously not the level of ordinary Lao Lu.

This shows that this is a specially purchased aircraft, rather than a temporary model seized from some unlucky unit of the Army Aviation Corps.

"You change clothes very quickly."

"Special support from superiors..."

Song Lei, who came up later, answered while fastening his seat belt:

"It is said that the specific landing location of the astronauts is uncertain, and it is possible that the services of a medical surveillance and medical insurance helicopter will be needed. Although the Mi-17 is powerful enough, its comfort is really... average, and search and rescue helicopters will appear frequently in the news. From all aspects, it is more suitable to use domestic models..."

…

Not long after, the helicopter flew over Dongfeng Aerospace City.

In fact, this is Chang Haonan's first time here.

Looking from afar, an isolated city located in the desert,

In particular, there are two giant buildings, the tall vertical assembly plant and the launch tower, as well as the transfer track connected between the two.

Watching it on TV, you may not feel anything.

But to be here in person is to be in a condescending position, and the shock it brings is real.

At Song Lei's special request, the helicopter did not land immediately. Instead, it flew around the launch center for half a week before landing smoothly on the apron.

Although he was very curious about the situation in the launch site area, after all, he was on a mission, so Chang Haonan quickly got in the car and walked through the center of the base to the general technical department.

Under the leadership of Song Lei, several people quickly arrived at Shen Junrong's office.

The latter has obviously been waiting here for a long time.

Even before Chang Haonan knocked on the door, he quickly stood up and welcomed him in.

"Comrade Haonan, I have waited for you..."

Shen Junrong motioned for Chang Haonan to sit on the sofa, took the kettle from the side and poured him a cup of tea himself:

"Now that the broadcast plan has been basically finalized, I'm just waiting for you to give me confirmation on the specific time frame within which continuous communication can be guaranteed..."

As soon as he finished speaking, Chang Haonan put the briefcase in his hand in front of him:

"I've prepared a detailed plan."

"Based on the actual conditions on the day of launch, it can be guaranteed that at least two of the eighth to tenth orbits around the earth will provide high-throughput data transmission for no less than 30 minutes!"