Military Technology

In order to make this manned spacecraft safe and reliable enough, we have conducted various testing experiments on it tens of thousands of times to ensure that it is safe enough. To this end, we have also invited relevant domestic and even international aerospace technology experts to participate in demonstrations and discussions on the relevant technologies of this spacecraft, allowing them to find faults and problems.

Even in order to motivate everyone, we have also set up a special reward fund. If we find a problem, we will give equal rewards according to the severity of the problem.

For this reason, there have been many complaints from our manned spacecraft development project team. In their opinion, are we crazy? How can we spend money to create such a trouble-making group to make ourselves unhappy?

Subsequently, also because of these problems, very fierce contradictions and conflicts broke out between the project R\u0026D team and the fault-finding group. Sometimes the two sides are entangled over an issue and get into a frenzy, and sometimes they are even on the verge of fighting.

However, as this confrontation and cooperation deepened, the relationship between the project R\u0026D team and the fault-finding team became more and more harmonious.

There is no irreconcilable conflict between them, let alone personal grudges. They are just fulfilling their responsibilities and obligations from the perspective of their respective work responsibilities.

It proves that this seemingly unreasonable method has played a big role. We have found thousands of problems, large and small, and solved them one by one. Some of them may not be a problem in the eyes of others, but for the sake of safety, reliability, comfort and convenience, we have also made adjustments to make them safer, more reliable, and more user-friendly.

Many of the technical standards have far exceeded those on existing manned spacecraft. It can be said that we have developed and established a set of technical standards for manned spacecraft of our own.

The subsequent three successful launches of unmanned experimental spacecraft have also verified the safety and reliability of our manned spacecraft, and have been highly praised by aerospace authorities and technical experts in the industry.

Speaking of this, Wu Hao paused briefly, and then continued to speak to the reporters in the audience: "We attach great importance to the first manned launch mission, so we strictly monitor the production and manufacturing process of this spacecraft to ensure that every piece of All parts meet our stringent requirements.

And after the spacecraft was manufactured, we conducted multiple tests on the spacecraft ourselves to ensure that it met our technical standards and safety requirements before allowing it to leave the factory.

After the Walker 4 spacecraft was transported to the Nanhai launch site, a group of relevant technical experts from the aerospace department conducted relevant rigorous tests. Only after ensuring that our spacecraft meets relevant safety standards will we be allowed to fly. "

"The Jianmu-7 rocket launched by the Walker 4 manned Fei Chuanfang this time is not a brand-new rocket. Its first-stage rocket is actually a second-hand rocket, which means that before this time, This first-stage rocket has successfully carried out two launch missions."

After hearing Wu Hao's words, the reporters in the audience couldn't help but become curious. Why would a second-hand rocket be chosen for such an important first manned launch mission? Is this just to save costs?

Looking at the curious eyes of everyone in the audience, Wu Hao smiled and said: "First of all, let me tell you that using this second-hand first-stage rocket to undertake the launch mission is not for cost savings.

Even if we deduct it again, it is impossible for us to be confused about such a big matter.

The reason why such a second-hand rocket was chosen as the launch vehicle for the first manned launch is mainly because this second-hand first-stage rocket has successfully completed two rocket launch missions, both of which were successful and performed well.

Compared with the new rocket, this second-hand first-stage rocket that has performed two manned launches is relatively more stable and reliable. Otherwise, it would be impossible to succeed twice in a row.

For a retractable rocket, its performance is generally at its best from the second to the fifth time. Because the first launch has verified the safety of the rocket, if there is a problem with that part of the rocket, it will already be shown in the first launch.

In fact, why traditional rocket launches are so risky is mainly because of their one-time nature. Because it is a new rocket and has not been verified by actual launches, it is naturally unknown whether it can succeed.

As for recyclable launch vehicles, there is no need to consider such issues, because the first launch has been verified. If there is a problem, the first launch may have failed. Even if there is no failure, these problems will be exposed in the first and second launches, so that we can find these problems and carry out maintenance and repairs to ensure that it is reliable and safe enough in the next flight state. Stable and running normally.

The second-hand first-stage rocket used for this manned launch has performed in excellent condition after the first two launches, with basically no damage. Therefore, after a comprehensive evaluation, we decided to use it for the first stage of our launch vehicle.

As for the rocket's second-stage rocket, although it is a conventional one-time rocket, we have also put a lot of effort into it. First of all, its technology has been fully verified in previous launch missions, proving that it is safe, reliable and stable.

Secondly, on this basis, we optimized and upgraded it, focusing on reliability. The most popular dual-bus dual-system structure of rockets is adopted to ensure that when a single bus or system fails, the rocket can immediately switch to the backup bus system without affecting the normal operation of the rocket.

As you all know, our Jianmu-7 rocket has no fairing and no escape tower. The Walker series spacecraft carries its own escape system. It can instantly ignite and break away from the faulty rocket and land on the ground when a fault light appears on the rocket.

Generally speaking, the entire escape tower only functions on the middle and lower floors. Basically, it will separate with the fairing shortly after the first stage rocket breaks away.

This is also the most dangerous stage of the entire launch process. Because the altitude is too low, an escape device is needed to bring the spacecraft to a sufficient height, so that the landing site on the spacecraft can have enough height and time to expand to ensure that the spacecraft lands safely.

At this time, the advantages of our integrated design and our use of second-hand first-stage rockets are reflected.

First of all, it uses a second-hand first-stage rocket with relatively stable performance, so it can minimize the risk of mid-to-low altitude during takeoff and before the first-stage rocket falls off. And this is precisely the most dangerous stage in the entire rocket launch process. "

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