Vol 2 Chapter 935: Rocket recoverable technology with our own characteristics

There is still some time before the launch, Wu Hao can't let these two people stay here, so he still has to accompany them to visit the base. Of course, this is also an important purpose or wish of Lao Ma and Xiao Ma's trip. As the host, how could Wu Hao not be satisfied.
First of all, they went to the rocket launch site. There is still a period of time before the rocket launch, so the site has not been closed and cleared.
Therefore, before closing and clearing the venue, I took the two of them to visit the site. Once the launch site is closed, people can no longer enter, even Wu Hao.
Except for the base, the vehicle began to drive smoothly on the straight and wide asphalt road. The silhouette of the rocket erected in the distance has appeared in everyone's eyes.
In this vast desert next door, the tall rocket just soars, I have to say it is very shocking.
The closer you get, the bigger the Rocket's body is, and it even gives people a sense of oppression. The height of more than 30 meters may not sound high, but the actual feeling is very shocking, especially when people stand under its feet and look up, the huge body makes people can't help but wonder.
The vehicle stopped at the empty field in front of the launch site, and everyone got out of the vehicle with shocked faces, without a rocket in their eyes.
The staff on the side immediately gave them white helmets, and everyone took them and brought them up.
"Mr. Wu!" Zhou Xiangming greeted him with a few people.
"Xiang Ming, I will bring two President Ma to visit." As he said, Wu Hao smiled at the old Ma, Xiao Ma and others and introduced: "This is Zhou Xiangming, the deputy chief engineer of our entire project. This recoverable launch vehicle was designed and developed by him."
"It's really young and promising." Lao Ma looked at this very young Zhou Xiangming and couldn't help but exclaimed.
"amazing!"
Hehe, Zhou Xiangming smiled and shook his head and said: "This is the result of the hard work of the entire team, and Mr. Wu has also given us a lot of help. Otherwise, the progress of this project is far not so fast."
As for the little Ma on the side, he kept looking at the Rockets with a smile and asked: "Can you tell us about this rocket?"
"Of course, everyone, please." As Zhou Xiangming said, the leader and everyone Xiang, and smiled at everyone and introduced.
"This is the second commercial launch vehicle developed by the Aerospace Science and Technology R&D Laboratory of our Haoyu Technology Company, and it is also the first commercial launch vehicle developed by ourselves.
The rocket is 36.8 meters wide, with a diameter of 3.52 meters and a take-off mass of 225.4 tons. The low-Earth orbit carrying capacity can reach 4.2 tons, and the sun-synchronous orbit can reach 2.3 tons. This capability can basically meet the orbit requirements of most commercial satellites and some spacecraft.
This rocket consists of a total of two-stage rockets, one-stage recoverable rocket and two-stage rocket.
After the rocket is launched, the first stage part will automatically fall off after sending the rocket to a certain height. The umbrella bin at the top of the first-level section will first throw out the guiding umbrella, and then throw out the three main umbrellas. These main parachutes will drastically slow down, controlling the landing speed of the rocket within a more appropriate range.
The grid plate and directional motor on the rocket will continuously control the direction of the rocket's descent, thereby ensuring the accuracy of the landing point of the first-level rocket.
When the rocket is about to land on the ground, the launcher opens. Generally, this distance is between two hundred meters and one hundred meters. The main engine of the rocket will ignite, thereby further slowing down, allowing the rocket to land smoothly, and the entire first-level rocket recovery mission is completed.
As for the secondary rocket, the rocket body is small, the cost is relatively small, and the recovery cost is high, the recovery is difficult, and it has no recovery value, so we usually let it fall at a fixed point.
For a retractable launch vehicle like this, the first-stage rocket body accounts for about 80% of the total launch cost. If it can be recovered, the launch cost will be greatly reduced.
According to our current quotation, generally two launches can recover costs and make a profit. The design life of the first-stage body part of our retractable rocket is five to eight times.
Of course, the number of launches will be appropriately extended or reduced according to the recovery status of the first-level rocket body. "
Hearing Zhou Xiangming's introduction, everyone nodded and had a general understanding of the rocket. Although I have read relevant information before, it is far more profound than the on-site explanation.
Little Ma, who listened carefully to the entire process, immediately asked: "Is this rocket reliable? What advantages does it have compared to the Falcon rocket."
When Zhou Xiangming heard the words, he nodded and replied: "Of course it is reliable. The greatest condition that determines whether a carrier rocket is good or bad is reliability.
If a launch vehicle is unreliable, no matter how good it is in other aspects, it has no value.
So when we socially develop and manufacture rockets, we put reliability in the first place. In addition to drawing lessons from some international advanced and mature technologies, the technology on this retractable rocket also has many innovative designs and technical applications ~EbookFREE.me~ For example, the fuel used in the rocket is our own research and development. . At present, this new type of mixed fuel has been recognized by experts in the aerospace sector and has been partially used in some rockets to replace some toxic fuels.
The second is the rocket's flight control system and the newly designed return method. We have designed an ‘intelligent control brain’ for this rocket. This ‘brain’ can control the rocket’s flight attitude control and can deal with problems that occur during the rocket launch in real time.
Compared with the traditional passive solution, this kind of proactive efforts to deal with problems can greatly improve the reliability of the rocket.
The second is our self-designed return method, which is different from the way that the Falcon rocket needs the engine to ignite and fly. Our first-level rocket body uses a parachute to decelerate at medium and high altitudes. Only at low altitudes will the engine fire and slow down.
The advantage of this is that on the one hand, it can increase the carrying capacity of the rocket and save more fuel for use in the carrying capacity of the rocket.
On the other hand, this way of reducing the working time of the engine can extend the life of the engine and even the first-stage rocket body, increase the number of launches, and further reduce costs.
Finally, in terms of cost, the parachute thrown by the first-level rocket body can be reused. It only needs to be recycled and cleaned, and then refolded, it can be refilled and used.
Moreover, this parachute deceleration method can reduce the working intensity of the rocket engine, prolong its life, and reduce fuel consumption, thereby reducing launch costs.
Of course, this has another advantage, that is, the manufacturing difficulty and manufacturing cost of our engines are further reduced, not as harsh as the Falcon. "