Vol 2 Chapter 1202: Humans will conquer this vast sea of stars

Bang!
I saw this Jianmu-2 modified carrier rocket secondary rocket, like a meteor, plunged directly into the sand dunes in the landing field, splashing dust everywhere.
Immediately, the entire landing site was covered by sand and dust, and the situation in the sand was completely invisible.
However, these are not important anymore. For Wu Hao and the others, the test has been a complete success. The second-level rocket fell to the predetermined area very smoothly, which has achieved all their goals.
Next, search personnel on the landing site rush to the fall point of the secondary rocket, find the wreckage of the rocket, and then collect it for loading, and wait for further research after returning.
In the command and control hall of the Northwest Launch Center, applause and cheers filled the entire hall.
Wei Hongyu immediately stood up and congratulated Wu Hao and Wu Hao: "Xiao Wu, congratulations. This time the re-entry order landing test of the second-level rocket was a complete success. I think it won’t take long. We will look at you. News of the successful recovery of the secondary rocket body."
"Hahaha, you passed the award. This is just the success of the primary and secondary experiment. It is still too early to be successfully put into use." Wu Hao smiled and shook his head: "Let's not talk about the other things, that is, how to make the secondary rocket body It is very difficult to land smoothly on the ground and be able to reuse it.
Now we are only experimenting with a fixed-point fall. To make it fall smoothly, first I have to continue to slow down the rocket so that it can reach a landing speed.
Secondly, which way to land is also a very headache for us. It uses the main engine like the first-stage rocket body to ignite and decelerate and land vertically. Or use similar to the space shuttle, gliding and landing on the runway.
Or it may use a large parachute group, slow down and land slowly, etc. There is no unified feasible plan, and it is still being explored. "
Hearing what he said, Wei Hongyu nodded involuntarily.
"Indeed, this final stage is the most complicated and most important part of the entire recovery task. If there is a problem in this link, all the previous efforts will be in vain.
The three recycling methods you listed are indeed the most common and the most reliable third method. How can it be achieved? This requires continued exploration and research.
So far, I think it’s more reliable to use a gliding landing method similar to the space shuttle.
After all, the Mi Space Shuttle used this method, and our "Shenlong" spacecraft also landed in this way, and achieved very good results.
However, this technology also has its disadvantages, that is, this kind of gliding landing requires a long return landing runway.
Secondly, there are also certain requirements for the structure of the spacecraft itself for gliding and landing. If the structure is not strong enough, it will be difficult to withstand the impact of the rocket when it lands on the ground.
Wanting to increase the strength of the rocket means that the weight will increase, which will undoubtedly reduce the carrying capacity.
It is also very difficult to continue to use the method similar to your first-level rocket body that the main engine ignites and recoils before landing.
First, after reaching the ground, adjust the attitude of the rocket body, and then slow down. Finally, before landing, quickly adjust the attitude of the rocket. Let the rocket change from the original glide attitude to the vertical erect attitude, and then fall smoothly. On the landing field.
This series of attitude adjustments will have very high requirements for both the rocket's own structure and its own control system.
As for the slow-down landing method of the large parachute group you mentioned in the end, I am not optimistic. First, the weight of the large parachute group is too heavy. This is a directly occupied payload, which will reduce the direct carrying capacity of the rocket.
Secondly, large parachute groups are easily affected by the wind direction in the air, so the landing point is uncertain and recovery is difficult.
Of course, this is just my personal opinion. You have to choose which method to choose. "
Where, Wu Hao smiled and shook his head: "What you said is very good. Each of these recycling methods has its own advantages and disadvantages. Which method to choose is the most troublesome issue for us at present.
We have to choose a method that is reliable, efficient, and can greatly reduce costs, and is the most economical way. "
Just as he was talking, suddenly the command and control center became lively. Wu Hao and Wei Hongyu ended their conversation and looked over.
It was discovered that Gao Jinguang, the commander-in-chief of this launch mission, had already walked to the front podium amidst the applause and cheers of everyone.
When he walked to the back of the desk, Gao Jinguang set the microphone, put the manuscript on the stage, then glanced at the people under the stage, and said with a serious face.
"I announce that the calculation results are summarized based on the telemetry data of the launch center and the United Anxi Satellite Ground Measurement and Control Center. This time the'Jianmu 2'modified rocket successfully sent the'Oasis No. 1 inflatable space experiment module' to the perigee 320 kilometers. A 410-kilometer near-Earth elliptical orbit at apogee.
The "Oasis One Inflatable Space Experiment Module" is currently in good condition, and UU Reading www.uukanshu.com is proceeding with the next step of testing work as planned. After the completion of the related testing and control work, we will officially hand over to Haoyu Aerospace. "
Happiness...the hall burst into applause and cheers, and on the big screen behind it, the most classic and romantic sentence also appeared.
[Our journey is the sea of ​​stars! 】
It was originally a normal official congratulatory slogan, but this time it was an open launch mission, so naturally there must be a louder and more eye-catching celebration.
Of course, this is also the goal and dream of all astronauts. Our journey is the sea of ​​stars, and we will surely conquer this vast sea of ​​stars.
Just like mankind finally conquered the ocean, one day, mankind will also conquer this vast space universe.
This day will not be too far!
Looking at these big characters on the big screen, Wu Hao muttered silently in his heart.
At this time, at the invitation of Gao Jinguang, Yu Chengwu, who was in charge of the entire recycling work, also stepped onto the stage, took Gao Jinguang, and announced with a smile to everyone.
"According to the news from the landing site and the rocket recovery mission center, the first-level rocket that we launched the Jianmu-2 modified rocket has landed smoothly on the landing field. This time the first-level rocket has landed and recovered. The mission was a complete success.
In addition, the two halves of the fairing on the Jianmu-2 modified rocket have been successfully recovered by helicopter in the air, and have been safely transferred to the relevant area. After some inspection and cleaning and maintenance, the two fairing halves will be reused on the new launch vehicle for launch.