One hundred seconds countdown to primary and secondary separation.
One hundred seconds to prepare!
On the big screen, the red numbers on the countdown board kept flashing, reminding everyone that their work was about to officially begin. Although the first-stage rocket and fairing will not land at the Yatu Sea Landing Field this time, the remote control of the first-stage rocket and fairing will be handed over to the Yatu Sea Landing Field Command and Control Management Center. .
Although this is a first-stage rocket body that has been successfully recovered six times, the measurement and control team in the hall of the command and control management center still dare not look up. At this moment, they are looking at the big screen with their whole body, watching the various data changes of the rocket.
Typically, the first stage separates between one hundred and two hundred seconds. This is mainly based on the size of the first-stage rocket, which determines the amount of fuel, the thrust of the engine, and the height of the orbit to be launched, so the working time of the first-stage rocket also varies. Like this mission, this first-stage rocket has to work for 167 seconds.
It's almost three minutes, so during these three minutes, the entire measurement and control team needs to stare at these data signals for fear of omissions and misreadings.
One minute to separate and prepare.
At this point, the rocket has reached a high altitude. Through optical telemetry imaging, everyone can clearly see the rocket and the tail flame at the tail. In fact, at this altitude, the optical telemetry equipment is very powerful in observing the rocket body, so in this process, the main thing is to observe the working status of the engine at the bottom of the first-stage rocket.
To put it simply, observe the tail of the engine injection. Under the complete condition, the tail flame should tend to be stably burned and ejected, without any fluctuations. Only when the engine fails, the ejected tail flame will naturally appear, which is extremely conspicuous in optical infrared observation equipment.
Thirty seconds!
Ten, nine, eight...three, two,, first and second level separation.
With the opening of the Northwest Space Launch Site, the successful separation of the first and second stages of the rocket can also be seen on the big screen.
Yatu, the first stage rocket has been successfully separated, and the remote control rights are handed over to you.
Yatuhai received it!
The large screen in the hall is divided into two. One half is the previous monitoring area, including the Jianmu-2 fire that has been ignited and is pushing the load and continues to rise, as well as various measurement and control data synchronously transmitted back from the northwest launch site. .
The other half argued for the first-person view captured by the surveillance camera on the landing first-stage rocket body. In the picture, the rocket's grid plate was successfully opened, and the rocket began to be controlled to adjust its attitude in the air, and then landed as shown below.
Further below is a piece of yellow sand, and you can vaguely see the outlines of some towns, roads, and lakes. In the distance, there is a semicircular blue sky that is tilted toward the mist, and even higher above, there is a deep blue sky.
This time, this first-stage rocket uses the latest improved technology, which is to get rid of the previous technical means of the first-stage rocket of the Jianmu-2 rocket, which required a parachute to decelerate at medium and high altitudes.
This time, the first-stage rocket of the Jianmu-2 T-type rocket has been upgraded and modified, so that it can have the same rocket body as the Jianmu-7 first-stage rocket. The rocket engine ignites and recoils during the entire return process. slow down. ….
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This change makes the return and landing of the first-stage rocket body straighter and does not require so many movements. In addition, the space and weight of the parachute bag are also saved, and more fuel can be carried, increasing the overall carrying capacity of the rocket.
And compared with other return-type reusable first-stage fires, this first-stage rocket, including the new first-stage fire of the Jianmu-7 series rockets, all adopt a linear landing method that gradually decelerates. To put it simply, the rocket engine It is not that it starts 100% at the beginning and then slows down the rocket.
This is not the case. The thrust of the rocket's displacement engine may be only 100% in the initial stage, and then the thrust will increase little by little as the landing altitude changes. When it is about fifty meters above the ground, the thrust reaches 90%, and then continues to increase. When it is one meter above the ground, the thrust rises to about 99.5%, and then it slowly lands. Engine shuts down.
The good thing about this is that it saves fuel. It can greatly save the fuel consumption of the rocket during the landing process, and continuously decelerate the rocket at a minimum cost. Another big reason is that the faster speed at the beginning allows the rocket to control its landing posture, avoid being affected by mid-to-high airflow, and (this chapter is not over yet!)
Chapter 2365 Arrows Falling from the Sky (Part 1)
And it can greatly shorten the entire landing time.
The No. 2 report from the No. 1 landing site showed that the core first-stage rocket was 3,000 meters above the ground, the landing attitude was positive, the landing speed was positive, and the landing gear was opened normally.
Yatuhai understands.
Landing site No. 1 reports that the landing site area is dry, the ground wind speed is 1, the humidity is moderate, and landing is possible.
Yatuhai understands.
As the height of the first-stage rocket continued to decrease, the numbers on the big screen also continued to decrease, and the entire speed changed dramatically. In the blink of an eye, the height of the rocket from the ground was only a thousand meters.
At this time, the two drones were hovering high above the No. 1 landing site. Through the mirror on the drone, the rocket during the entire landing process could be watched more closely.
The two drones also received the command and immediately flew towards the rapidly descending first-stage rocket.
Through the drone mirror, everyone can clearly see that the grid wings on the first-stage rocket are constantly changing, controlling the rocket's flight attitude.
Five hundred, three hundred, one hundred meters!
The first-stage rocket body fell faster and faster, and finally the long tail flame ejected from the first-stage rocket body blew up dust on the ground, and the rocket was also covered by the flying desert dust.
The rocket slowly landed close to the ground. As a burst of white smoke rose, the first-stage rocket landed smoothly on the landing site.
, bang bang bang bang!
There was a burst of warm applause at the scene. For the entire first-stage rocket reward recovery and measurement and control team, their main task has been completed. Next, you only need to coordinate with the on-site rocket recovery and transportation technical team to transport the first-stage rocket body to the rocket workshop at the northwest R&D base for maintenance, storage, and waiting for the next mission.
Wu Hao naturally took the lead in giving warm applause for completing the task of recovering the first-stage rocket so beautifully. Yu Chengwu and others on the side also applauded when they saw this.
Just when everyone was laughing and admiring, the original first-stage rocket measurement and control screen on the big screen was cut. On the main window screen, two huge red and white parafoils were soaring in space with two fairings. .
A window screen showed three orange helicopters already circling in the sky, waiting for the target to arrive. .
Zhi Tiange reminds you: Remember to bookmark [] after reading it. I will update it next time so that you can continue reading. I look forward to the exciting continuation!
Chapter 2365 Arrows Falling from the Sky (Part 1)
