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"These three methods are all currently used by all manned spacecraft in the world. Of course, compared with some traditional manned spacecraft, there is still a big difference between us and them.

First of all, the escape device of the traditional manned spacecraft uses the escape tower on the top of the rocket fairing to escape.

That is to say, the manned spacecraft does not participate in the entire escape process, and is completely controlled by the rocket itself. Until the escape tower is separated, the fairing is opened, and after the spacecraft detects free fall, each part is separated, so that the return capsule throws a parachute for landing.

And we, like the Dragon spacecraft, use the reverse thrust rocket on the return capsule of the spacecraft as an escape device to push the return capsule of the spacecraft to escape, and then escape to a safe distance.

Compared with the traditional escape method, our method without a fairing and without an additional escape tower is faster and safer.

In addition, when a traditional manned spacecraft is launched, the huge escape tower at the top of the rocket fairing also greatly occupies the payload of the rocket, which can be said to reduce the weight of the manned spacecraft itself. This will not only affect the payload of the spacecraft, but also increase the launch cost.

As for us, we don't need to worry about this. We can fully use the load and transport more things into space, which greatly reduces and lowers the launch cost. "

Hearing Guo Yulong's introduction, Wu Hao and everyone present couldn't help but nodded.

What about tomorrow's airdrop experiment? Yang Fan, who sat beside him without speaking, asked.

Although everyone's attention had been on Wu Hao after the meeting, they did not relax their attention on Yang Fan at all. You know, Yang Fan is the CTO (Chief Technology Officer) of the group company.

In addition, he is also an important shareholder and one of the founders of the company. His opinion and attitude are also crucial, and can be said to affect the fate of a project.

In addition, Yang Fan, the CTO, is in charge of the company's technical research department, and in theory is directly under the leadership of the Institute of Aerospace Science and Technology.

The important personnel arrangement, resources and capital investment of this laboratory also need to be approved by Yang Fan. So, although Yang Fan has been silent, but everyone did not dare to take it lightly.

What made them even more inquisitive was that Yang Fan was also a professional technician and was very familiar with technology. He also participated in many projects of Haoyu Technology. If he finds a flaw, loophole, or handle, then I'm afraid they will feel better.

However, for many scientific research and technical personnel, the greatest fear comes from the sitting at the top, the biggest boss above their heads, the big boss, seems to be a technical talent, and he is also a genius technical scientist.

Hearing about Yang Fan's culture, although Guo Yulong was much older, he still didn't dare to take it lightly, and immediately reported to Yang Fan and Wu Hao seriously.

Tomorrow's return capsule airdrop test is mainly to test the flight of the return capsule during the landing process, the deceleration of the parachute throwing, and the final return capsule reverse thrust engine ignition deceleration and safe landing.

This can be said to be related to the safety of the entire return capsule when it returns to the ground, and it is also related to the personal safety of the astronauts in the return capsule.

What is even more tricky or difficult is that once the return capsule fails during the landing process, it will be difficult to solve it, or even impossible to solve it.

This also means that if the failure is serious, the return capsule of the spacecraft is likely to hit the ground directly at an extremely high speed.

Such a serious consequence, I believe, is something that none of us can see, and it is even more unbearable.

Therefore, we need to continue to conduct airdrop experiments to ensure that all landing deceleration devices can work normally, to ensure that the landing process is foolproof, and that the return capsule lands safely.

What we will conduct tomorrow is a 5,000-meter-high altitude airdrop experiment,

We will also conduct low-altitude airdrop experiments of 3,000 acres, and high-altitude airdrop experiments of 8,000 meters and 10,000 meters to test whether the landing technology of the spacecraft return capsule at various altitudes is reliable and safe.

Wu Hao glanced at Yang Fan, then nodded and smiled, "Let's talk about this project here, let's continue with the following content.

Tell us about the development of our Jianmu-7 rocket and the smart lunar rover we will launch next fall. "

After Wu Hao finished speaking, he looked at Zhou Xiangming. After Zhou Xiangming understood, he nodded and said.

"Okay, then I will first report to you the development progress of our Jianmu-7 rocket. After careful demonstration and technical breakthroughs, this project has now entered the specific development stage.

Our rocket manufacturing plant in Jiangcheng has been completed. This time Mr. Yu (Yu Chengwu) used to arrange the related work there.

Our Jianmu-7 rocket will also be developed at the Jiangcheng Rocket Manufacturing Plant. After the development is successful, the rocket will be transported directly along the Yangtze River route to the South China Sea launch site using the rocket transport ship of the Aerospace Industry Corporation. .

Our first intelligent lunar rover will also be placed there for optional launch. "

"Why not put it in the Northwest for R\u0026D and launch? The conditions here are all ready-made. Why not go far away and build a rocket manufacturing plant in Jiangcheng." A middle-level female cadre of the company who came with Wu Hao this time couldn't help but speak. asked.

Hearing this question, everyone present laughed.

Am I saying something wrong? The middle-level female cadre was a little confused.

Wu Hao waved his hands with a smile, and then said to Zhou Xiangming: "Since someone asked, then you can simply explain it to him."

OK Zhou Xiangming nodded, then smiled at the female cadre and said, "That's right, I chose to build a rocket manufacturing plant in Jiangcheng mainly because the transportation in Jiangcheng is relatively convenient and shipping is available, which is something we cannot do inland. arrived.

The Jianmu-7 rocket we are developing is a medium-sized heavy-duty launch vehicle with a diameter of 3.8 meters, a height of 59 meters, and a take-off mass of 450 tons. It is difficult to transport such a big guy by road, and it is even more impossible to transport it by rail.

Due to the limitations of our railway bridges and tunnels, the diameter of our country's rockets is generally kept at a size of 3.35 meters. This size is due to nothing else but because this is the maximum size these train tunnels can accommodate.

There are no such restrictions on shipping, which is why we launched the Chang-5 rocket in the South China Sea.

Secondly, the South China Sea launch site is relatively close to the equator and has a relatively low dimension, so choosing to launch there will save fuel. This will not only save costs, but also transport heavier loads into space. "

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