Chapter 1646

As for the use fee of outer space orbit, the reason why South Korea Daewoo Group still doesn't know is very simple. That is, no one in the whole space club thinks that South Korea Daewoo Group has the qualification to join.

In other words, no one is optimistic about the "Luolao" carrier rocket of Daewoo, South Korea.

Based on this, the words of those so-called foreign experts and senior people in the aerospace industry praising the "Luo Lao" launch vehicle are deceptive.

Although the Korean people are used to beating chicken blood for themselves, it does not mean that they are a group of fools. Through the comparison between the two sides of the questions asked by their own journalists and the German media, they naturally perceive the fishiness inside.

As a result, the hotline in the KBS news studio in Seoul was exploded in an instant. At the same time, on the Internet, a group of hot-blooded Korean young people fiercely questioned whether the Korean Daewoo Group played with national feelings!

In such a serious trust crisis, KBS TV station, which is invested by Daewoo Group of South Korea, naturally has to come forward and make some clarifications. Of course, they can't. the problem is that there is not a ready-made professor in the Department of aviation and aerospace of Seoul University in today's studio.

More importantly, in addition to taking office at Seoul University, Li Dongxiu studied aerodynamics at Princeton University in the United States in his early years. Later, he worked as a visiting scholar at Imperial College for three years. After Daewoo Group launched the "Luolao" carrier rocket, he went to Russia as a special consultant to negotiate the technology transfer of Russian made first-stage rockets for Daewoo Group.

It can be said that Li Dongxiu is the existence of the top pyramid in the aerospace field in South Korea.

Because of this, seeing that the trust crisis is about to expand, the producer's instructions to ask Li Dongxiu questions continue to come from the beautiful anchor's headphones, So after a little brewing, the beauty anchor asked Li Dongxiu: "Professor Li, you have just heard Zhuang Jianye's words about China's take-off. It can be said that he is extremely arrogant. He not only has to charge for the use of orbit in various countries, but also asks reporter Park in front of him what it means to launch 11 different types of spacecraft five times in half a month? Now the majority of audience friends have a question. What does Zhuang Jianye mean? Our 'Luo Lao' Can we launch 11 different types of spacecraft five times in half a month? "

Listening to the questions of the beauty anchor, Li Dongxiu in front of the camera looked calm and indifferent. He showed the noble and elegant performance of the professor just right. However, in the depths of his heart that can not be photographed by the camera, Li Dongxiu looked ferocious and terrible. I wish he could turn into a wild and fierce beast and pinch the beauty anchor opposite.

How many holes do you have in your head to ask such a buried question?

You know, even Americans avoid talking about it. It's not that they don't want to comment, but that they don't know they haven't stepped down after commenting.

Because that means that it is not the success rate of launch and the reliability of rockets that can be seen by those with a clear eye, but the incomparable manufacturing capacity of China's aerospace industry behind China's take-off.

During the cold war, former Soviet leader Khrushchev told Americans during his visit to the United States that the production of launch vehicles in the Soviet Union was as simple and efficient as the production of sausages.

This is certainly boastful, because it has been proved that the complexity of aerospace products such as satellites and launch vehicles is not much worse than that of large jet aircraft. Because of this, the production cycle of the whole aerospace products is particularly long.

Take Daewoo, South Korea. It takes more than half a year for Daewoo Group to manufacture a small satellite less than 200 kg, and the subsequent test takes at least two months.

In other words, it will take eight months for Daewoo Group to complete a satellite with launch status.

As for the "Luo Lao" launch vehicle, it will take 10 months to officially go offline.

Europe can be a little better than South Korea. Its main "Ariana" series launch vehicle takes six months and satellites take three months.

Russia was more effective in the former Soviet Union, but after its disintegration, it was basically similar to Europe.

The United States is better than everyone. Some fast launch vehicles and satellites can be produced, manufactured, tested and launched within a month.

The reason why the cycle is so long is mainly due to some special properties of aerospace products. For example, in the manufacturing of launch vehicles, a large number of small burrs and burrs will be generated due to the problems of materials, processing and technology. If it cannot be handled in time, it is very easy to cause seal leakage or other hidden dangers during rocket launch, resulting in the explosion and scrapping of the whole rocket.

There is no way to clean such burrs and burrs mechanically. We can only rely on experienced technicians to drill into the cavity of the launch vehicle and deal with them inch by inch.

The first stage rocket is OK. It has a large diameter and people can drill well. It is not troublesome to do the work, but the diameters of the second and third stage rockets are getting smaller and smaller. In addition, many internal equipment occupy most of the space, so that the technical workers can often work in a very strange posture for several hours, which makes many people's waist stiff at the end of work, You can't play with your arms.

What's more, there must be strict restrictions on the weight and figure of some skilled workers, otherwise if there is too much meat, there will be no way to get into a narrow space to work.

Li Dongxiu once met a 58 year old mechanic at a launch vehicle production plant in Russia's Ural Mountain Industrial Zone. He is the only mechanic in the plant who can work in narrow spaces such as three-stage launch vehicles and fairing. In addition to his superb skills, what is more important is that the weight of an old mechanic less than 1.7 meters is kept at 55 kg throughout the year, So in the Soviet era, he was trained by the factory as a professional in this field for more than 20 years.

Similar situations exist in Europe, South Korea and even the United States. Because of this, the manufacturing of launch vehicles can't be fast.

If you don't get up quickly, it means low efficiency. Low efficiency will inevitably lead to higher costs. This is why many people in the aerospace industry believe that China's take-off of the so-called cheap aerospace is a paradox, because the production efficiency of aerospace products all over the world is there. How can you be cheap!

However, China's take-off has carried out five successful high-frequency space launches in half a month. At high speed, it tells the world that China's take-off can do what you can't do; What you think is paradoxical, China's take-off can be logical. If not, China's take-off cannot only hang a banner on the Aerospace Exhibition Hall of Abu Dhabi Defense Exhibition: "we shoot faster, farther and longer than anyone!"