Vol 2 Chapter 1681: Heading for deep space

"The first stage rocket is off. The first stage and the second stage are separated!"
　　 With the first-view monitor screen on the rocket jittered slightly, I saw the first-stage rocket separated from the second-stage rocket and began to descend downward.
　　 The large screen in front of the command and control hall was also divided into two parts. One part continued to be the second-stage rocket pushing the load and soaring upward. The other part is the landing screen of the first-level rocket. The surveillance camera on the first-level rocket can also detect the landing of the rocket and its own situation in real time.
　　Through their own surveillance cameras, everyone can clearly see that the grid wing on the upper end of the first-level rocket starts to bounce and open, starting to control the rocket's attitude. The tail engine has also been ignited and started to decelerate and land the first-stage rocket with a small thrust.
　　 On the other rising screen, the second-level rocket is flying, and it is about to fly out of the atmosphere at this moment. Everyone is also waiting for a key instruction announcement.
　　 Throw the fairing!
　　 fairing throw!
In the large screen between 　　, the picture of the surveillance camera mounted on the payload suddenly lit up, and the two-lobed fairing opened and fell rapidly, and the appearance of a blue planet appeared in the picture.
　　 Papa Papa...
　　 At this moment, there was a warm applause in the command and control hall. This can be said to be a very critical step and one that is easy to make mistakes. Once, many rockets failed when the final fairing was separated, and they couldn't open anyhow, which eventually led to mission failures.
　　The working time of the second-stage rocket is obviously much longer than that of the first-stage rocket, because at this moment the first-stage rocket has broken through the von Kamen line, and theoretically it is already in a state of microgravity. However, this is not its focus, because its goal is to send the load to the Earth-Moon transfer orbit, so it needs to send the load to a fairly high scheduled orbit and give it sufficient speed.
　　 The second-stage rocket does not need to be recovered, so it uses a liquid hydrogen liquid oxygen engine, so it can have a longer working time.
　　 Compared to the launch, many people's eyes are now on the first-stage rocket. Through the surveillance camera on the first-level rocket, everyone can see the landing situation of the first-level rocket very intuitively, and the ocean rocket landing platform below can already see the figure.
　　 The photoelectric telemetry equipment on the marine rocket landing platform can also clearly observe the landing and landing of the first-class rocket.
　　 Although there is engine deceleration, the rocket's landing speed is still quite fast, because only in this way can fuel be saved, and the working time of the engine can be shortened, and the work and sale of the engine can be prolonged. Secondly, if the rocket's landing speed is too slow, it will be affected by the airflow and wind speed. When the landing speed reaches a certain value, the impact of the wind speed and airflow on it can be reduced, making it easier to control.
At a height of about one or two kilometers from the landing platform, multiple engines at the tail of the rocket ignited one after another, ejecting a huge tail flame, and the landing speed of the rocket continued to slow down. Hovering and controlling the landing accuracy, slowly descended.
The first-stage rocket quickly adjusted its attitude, and after landing accuracy, it began to slowly descend, and then steadily landed on the ocean rocket landing platform. The huge plume began to diverge to the sea on both sides of the platform through the diversion groove on the landing platform. . After the first-stage rocket lands smoothly on the landing platform, the engine shuts down immediately. After a puff of smoke passed, I saw the first-stage rocket quietly standing on the ocean rocket landing platform.
it is good!
　　 Papa Papa...
　　 The applause in the command and control hall rang out again, very warmly, and the technicians responsible for the landing mission of the first-level rocket cheered and celebrated.
　　 Just another time, there are still people staring at the big screen attentively, because the mission is far from over.
　　 Although the first-stage rocket successfully landed and landed, the big screen did not return to normal, and it was divided into two screens. But this time, it was no longer a first-stage rocket, but a two-piece fairing that had already deployed a paraglider in the air.
　　 Several orange-painted helicopters have flown to the scheduled sea area and are ready to welcome the arrival of the two-lobed fairing.
　　 And again, everyone is also staring at the data on the big screen, waiting for the news that everyone cares most about.
　　The second stage rocket shuts down, and the arrows separate!
　　 As the instruction announcement sounded, on the big screen, the surveillance camera on the "Wangshu" intelligent lunar patrol rover orbiter could clearly see that the secondary rocket has separated and is slowly moving away.
　　 Through the surveillance cameras on the secondary rocket, it can also be clearly seen that the combination of the "Wangshu" intelligent lunar patrol rover and the orbiter is heading into deep space.
　　 Papa Papa...
　　 All of a sudden, the hall that had been suppressed for a long time boiled completely, and almost everyone started to cheer and celebrate. This also means that the rocket launch mission has been a complete success. Next, the personnel on the probe side took over.
However, this still needs a ceremony. The launch commander needs to come on stage to announce that there is also the big red screen that netizens call ~EbookFREE.me~ Everyone cheered for a while, but they all stopped and everyone did not take their seats. , But stood there looking at the big screen.
On the big screen between 　　, it is a few orange-painted helicopters that are beginning to recover the two-lobed fairing.
Through several high-altitude patrol drones, we can clearly see the two-petal fairing hung on the red and white parafoil, while the lower part is a few orange-painted helicopters flying. NS.
　　 I saw the helicopter gradually stretched its height, and began to follow the distance behind the fairing paraglider. This time they still used the aerial hook recovery method to recover the two-part fairing. The helicopter needs to enter from behind with a hook, and then quickly fly to the sky above the paraglider hanging the fairing, and then hook the paraglider, so as to realize the recovery and lifting.
This process must be rapid and accurate, because the airflow of the helicopter propeller will affect the flight attitude of the paraglider, so the flight cut-in angle must be strictly controlled, and the helicopter must be controlled to accurately hook the paraglider. There is only one chance. Mistakes, then you can only fail.
Those who participated in the recovery of these two were all old pilots who had participated in more than a dozen recovery missions. They were very experienced in this. Although this was the first time to complete the recovery mission at sea, the two old pilots still controlled each. The helicopter successfully completed the hook and recovery task of the two flap fairing.
　　 They will hook the fairing, then put it on a nearby ship and transport it back to the port. If the distance is relatively close, they may choose to transfer them back to the base directly.