Military Technology

"The first-stage rocket shuts down. The first- and second-stage rockets separate!"

As the first-person view of the surveillance screen on the rocket shook slightly, the first stage of the rocket separated from the second stage and began to fall downwards.

The large screen in front of the command and control hall was also divided into two parts. In one part, the second-stage rocket continues to push the load and continue to soar upward. The other part is the picture of the first-stage rocket landing. The surveillance camera on the first-stage 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 wings on the upper end of the first-stage rocket begin to pop up and open, and begin to control the attitude of the rocket. The tail engine has also been ignited and started to decelerate the first-stage rocket to land with a small thrust.

On the other rising screen, the second-stage rocket was flying and was about to leave the atmosphere. Everyone was also waiting for a key command notification.

Throw the fairing!

Fairing thrown!

On the large screen, the screen of the surveillance camera mounted on the payload suddenly lit up. The two fairings opened and quickly descended, and the appearance of a blue planet appeared in the screen.

Bang bang bang bang...

At this moment, there was warm applause in the command and control hall. This can be said to be a very critical step, and it is also a step that is easy to make mistakes. There have been many rockets that malfunctioned when the fairings were separated at the end, and could not be opened, eventually leading to mission failure.

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 Karman line and is theoretically in a state of microgravity. However, this is not its focus, because its goal is to send the payload to the Earth-Moon transfer orbit, so it needs to send the payload to a predetermined orbit at a considerable height and give it sufficient speed.

The second-stage rocket does not need to be recovered, so it uses a liquid hydrogen and liquid oxygen engine, so it can have a longer working time.

Compared with the launch, many people's attention is focused on the first-stage rocket at this moment. Through the surveillance camera on the first-stage rocket, everyone can see the landing point of the first-stage rocket very intuitively, and the ocean rocket landing platform below can already be seen.

The photoelectric telemetry equipment on the ocean rocket landing platform can also clearly observe the landing of the first-stage rocket.

Although the engine is decelerating, the rocket's landing speed is still very fast, because only in this way can it save fuel, shorten the working time of the engine, and extend the working time of the engine. Secondly, if the landing speed of the rocket 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 can be reduced, making it easier to control.

At an altitude of about one or two kilometers from the landing platform, multiple engines at the rear of the rocket were ignited one after another, ejecting huge tail flames. The landing speed of the rocket also continued to slow down, until it was about a hundred meters above the landing track. Hovering and controlling the landing accuracy, it slowly descended.

The first-stage rocket quickly adjusted its attitude and landed accurately before slowly descending, and then landed smoothly on the ocean rocket landing platform. The huge tail flame began to flow through the diversion trough on the landing platform to the sea on both sides of the platform. . After the first-stage rocket lands smoothly on the landing platform, the engine is shut down. After a burst of smoke, the first stage rocket was seen standing quietly on the ocean rocket landing platform.

good!

Bang bang bang bang...

The applause in the command and control hall rang out again, very enthusiastically, and the technicians responsible for the first-stage rocket landing mission cheered and celebrated.

But another time, there are still people staring at the big screen attentively, because the mission is far from over.

Although the first-stage rocket landed successfully, the large screen did not return to normal and was still split into two screens. But this time, it is no longer a first-stage rocket, but a two-petal fairing that has deployed a paraglider in the air.

Several orange-painted helicopters have already flown to the predetermined sea area, ready and waiting to welcome the arrival of the two-flap fairings.

On the other hand, everyone was also staring at the data on the big screen, waiting for the news that everyone was most concerned about.

The secondary rocket shuts down and the weapon and arrow separate!

As the command announcement sounded, on the big screen, through the surveillance camera on the orbiter of the "Wangshu" intelligent lunar surface patrol vehicle, it could be clearly seen that the second-stage rocket had separated and was slowly moving away.

Through the surveillance camera on the second-stage rocket, it can also be clearly seen that the combination of the "Wangshu" intelligent lunar surface patrol rover and the orbiter is heading into deep space.

Bang bang bang bang...

At this moment, the hall that had been suppressed for a long time was completely boiling, and almost everyone started to stand up and cheer and celebrate. This means that the rocket launch mission has been a complete success. Next, the personnel on the detector side took over.

However, this still requires a ceremony, the launch commander needs to come on stage to announce, and the big red screen that netizens call it appears. Find Shuyuanｗww.zhaoｓshuyuan.com

After everyone cheered for a while, they all stopped. Everyone did not take their seats, but stood there and looked at the big screen.

On the large screen in the middle, several orange-painted helicopters were beginning to recover the two-flap fairings.

Through several high-altitude patrol drones, we can clearly see that the two fairings are flying under the red and white parafoils, and below are several orange-painted helicopters flying With.

I saw the helicopter gradually stretching its altitude and starting to follow the fairing in the distance behind the paraglider. This time they still used the aerial hook recovery method to recover the two-flap fairing. The helicopter needs to enter from behind with a hanging hook, then quickly fly over the paraglider hanging the fairing, and then hook the paraglider to achieve recovery and lifting.

This process must be quick and accurate, because the airflow of the helicopter propeller will affect the flight attitude of the paraglider, so the flight angle must be strictly controlled, and the helicopter must be controlled to accurately hook the paraglider. There is only one chance. If it occurs If you make a mistake, you will fail.

The people who participated in the recovery of these two fairings were veteran pilots who had participated in more than a dozen recovery missions and were very experienced in this. Although this was the first time to complete a recovery mission at sea, the two veteran pilots still controlled it separately. The helicopter successfully completed the task of hooking and recovering the two-flap fairing.

They would hook the fairing up and place it on a nearby ship for transport back to port. If the distance is relatively close, you may choose to transport it directly back to the base.