Bang!
I saw this second-stage rocket of the Jianmu-2 modified carrier rocket, like a meteor, piercing directly into the sand dunes inside the landing site, splashing sand and dust everywhere.
Immediately, the entire landing site was covered in sand and dust, and the situation in the dust was completely invisible.
However, these are no longer important. For Wu Hao and others, this test has been a complete success. The second-stage rocket fell to the predetermined area very smoothly, which has achieved all their goals.
Next, the landing site search personnel only need to rush to the crash site of the second-stage rocket, find the rocket debris, and then collect it and load it into the vehicle, waiting 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: "Xiao Wu, congratulations. This time the landing test of the second-stage rocket's re-entry order was a complete success. I think it won't be long before we see you." News of the successful recovery of the second-stage rocket body.”
"Hahaha, you're honored. This is just a successful primary and secondary experiment, and it's still early to be successfully put into use." Wu Hao smiled and shook his head: "Let's not talk about other things, that is, how to make the secondary rocket body Landing smoothly on the ground and being able to use it again is a very difficult problem.
Now what we are experimenting with is fixed-point falling. If we want to make it land smoothly, first I have to continue to slow down the rocket so that it can reach a speed that can land.
Secondly, how to land is also a very troublesome issue for us. It uses the same main engine as the first-stage rocket body to ignite and decelerate, and then lands vertically. Or use a method similar to the space shuttle, gliding and landing on the runway.
Or use a large parachute group, slow down and land slowly, etc. There is currently no unified feasible solution and it is still being explored. "
Hearing his words, Wei Hongyu couldn't help but nodded.
"Indeed, this final stage is the most complex and important part of the entire recycling task. If there is a problem in this part, all the previous efforts will be in vain.
The three recycling methods you listed are indeed the most common and the third most reliable. How to realize this needs to be further explored and researched.
For now, I think the gliding landing method, similar to that of the space shuttle, is more reliable.
After all, the Mi space shuttle used this method, and our 'Shenlong' spacecraft also used this method to land, 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, gliding landing also has certain requirements on the structure of the spacecraft itself. If the structure is not strong enough, it will be difficult to withstand the impact of the rocket landing when it lands.
Wanting to increase the strength of the rocket means increasing the weight, which will undoubtedly reduce the carrying capacity.
It is also very difficult to implement the method of ignition and recoil deceleration of the main engine before landing, similar to that of your first-stage rocket body.
First, adjust the attitude of the rocket body when it is almost to the ground, and then slow down. Finally, before landing, quickly adjust the attitude of the rocket. The rocket needs to change from the original gliding attitude to a vertical upright attitude, and then land smoothly. On the landing field.
This series of attitude adjustments will place high demands on both the structure of the rocket itself and its control system.
As for the slow-down landing method of the large parachute group you mentioned at the end, I am not optimistic about it. First of all, the weight of the large parachute group is too heavy. It is a directly occupied payload and will reduce the direct carrying capacity of the rocket.
Secondly, large parachute groups are easily affected by the wind direction in the air, so their landing points are uncertain and recovery is difficult.
Of course, this is just my personal opinion. Which method you choose depends on you. "
Wu Hao smiled and shook his head: "You said it very well. Each of these recycling methods has its own advantages and disadvantages. Which method to choose is our biggest headache at the moment.
We need to choose a method that is both reliable and efficient, can greatly reduce costs, and is the most economical method. "
Just as he was talking, the command and control center suddenly became lively. Wu Hao and Wei Hongyu immediately ended their conversation and looked over.
Gao Jinguang, the commander-in-chief of the launch mission, discovered that he had already walked to the podium in front amidst the applause and cheers of the crowd.
Walking behind the podium, Gao Jinguang placed the microphone, placed the manuscript on the podium, then glanced at the people in the audience, and then said seriously.
"I announce that based on the calculation results of the telemetry data compiled by the launch center and the Joint Anxi Satellite Ground Measurement and Control Center, the Jianmu-2 modified rocket successfully sent the Oasis-1 expandable inflatable space experiment module to 320 kilometers from the perigee. A predetermined near-Earth elliptical orbit with an apogee of 410 kilometers.
At present, the 'Oasis-1 Expandable Inflatable Space Experiment Module' is in good condition and is undergoing the next step of testing as planned. After the relevant test and control work is completed, we will officially hand it over to Haoyu Aerospace. "
Bang bang bang... Warm applause and cheers erupted in the hall, and the most classic and romantic words also appeared on the big screen behind.
【Our journey is the sea of stars! 】
It was originally a normal official congratulatory slogan, but this time it was a public launch mission, so naturally there had to 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 how humans finally conquered the ocean, one day humans will also conquer this vast space.
This day is not too far away!
Looking at these big characters on the big screen, Wu Hao thought 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 walked up to the stage, took Gao Jinguang's hand, and then announced to everyone with a smile.
"According to the news from the landing site and rocket recovery mission center, the first-stage rocket of the Jianmu-2 modified rocket we launched this time has landed smoothly on the landing site. This time, the first-stage rocket body has landed and recovered in another place. The mission was a complete success.
In addition, the two halves of the fairings on the Jianmu-2 modified rocket have been successfully recovered by helicopters in the air and have been safely transported to relevant areas. After some inspection, cleaning and maintenance, the two halves of the fairing will be reused on the new launch vehicle for launch.
