What is the function of manned space flight?

First of all, manned space flight is part of the overall national strategy. From the strategic position of the country, it is very different to have someone in space and no one in space, just like whether there are "two bombs and one satellite". If the purpose of "two bombs and one satellite" is to break the international nuclear blackmail and military blockade and defend the new achievements of the Republic of China, then the purpose of manned space flight today is to comprehensively upgrade and promote the space industry and related scientific fields, so that China can occupy a place in the world's high-tech fields and develop its own strength in the competition of technological globalization, so as to better serve the modernization drive and benefit all mankind.

Second, manned space flight can enhance China's international status. Manned space flight symbolizes a country's comprehensive national strength. Facing the 2 1 century, only by carrying out manned space flight can China maintain the momentum of space development, improve its international status, stimulate national pride and enhance national cohesion. Because manned space flight is a new peak in the space field in the world today, it represents the highest scientific and technological level in the world today and is a direction of future development. We have satellites, rockets, manned space flight and our own space station. Without these things, China would have no place in the world and would be bullied. If China wants to maintain its status as a big country, it must occupy a place in the world space field, otherwise the United States and other western countries will restrict you. Zhang Hongxian, director of a certain bureau of the Ministry of Space, said that 1986, he went to France to attend an international space conference, and space experts from the Soviet Union, the United States and France were invited to give lectures at the conference. Wherever he went after the meeting, he was always surrounded by people asking questions. But the experts from China who attended the meeting were left out in the cold, and no one paid attention to us. That smell is unpleasant. As a scientist, it is a shame that we, a big country and an ancient country of science and technology, have been given such a cold reception internationally! If China people go to heaven, it will be different.

Third, manned space flight can promote and drive the development of national high technology and national economy. Carrying out manned space flight is bound to break through many new technologies and drive many new disciplines, industries, materials and technologies. For example, the country has set seven research fields in the "863 Plan", and space technology covers all fields. In addition, manned space flight uses space for experiments. For example, what kind of state is a person in weightlessness? What will happen to biological seeds after being cultured in space? Only by sending people and seeds into space for experiments can we get scientific data. Fan Jianfeng, an aerospace expert, also said that once manned space flight is carried out, other technologies can be driven. For example, when the spacecraft returns to the atmosphere, the high temperature caused by friction with the atmosphere is 1800 to 2000 degrees Celsius, so what material can withstand such high temperature? You must study it. With this research, material technology has improved. Moreover, the flying height of the spacecraft, the orbit we designed is only over 300 kilometers, which is too low and consumes too much fuel. If the track can be as high as 100 km, the fuel consumption will be reduced by 30 times. If we master these technologies, we can promote the improvement and development of communication technology, material technology and electromagnetic technology. Now spacecraft use solar energy instead of fuel electromagnetism. In the future, we will also engage in fuel electromagnetism, promote the research of fuel science and promote the development of civil fuel technology. There are many problems with civil fuels now.

Fourth, manned space flight has great military value. The Gulf War, the Kosovo War, the Afghan War, the Iraq War and the "space war" exercises of the air forces of the world's major powers have shown the embryonic form of air-space integrated operations, marking the arrival of the era of large-scale four-dimensional wars by sea, land, air and space. That is to say, when the national interests expand along the track from land to sea, from sea to air, and from air to sky, the battlefield of air and space will surely become the main battlefield of future wars. Therefore, in the field of aerospace, China cannot and should not be absent. The future war is likely to be a space war, and space has long been an important place for the Soviet-American military contest. Zhang Chengyu, director of the Science and Technology Department of the Ministry of Aeronautics and Astronautics, said that from a military point of view, manned space flight has important military value for future space confrontation. The space station is absolutely important for the future space war. Spacecraft can be used as the first step in space war, and its technology can definitely drive other technologies. It can be used as a communication relay station, an anti-satellite device can be established, and a counterattack system can be established to attack and defend. After the manned spacecraft is completed, it will be expanded into a space station in the future. If one day the world space war breaks out and the battlefield is in the sky, there will be war in the sky. Once an attack is launched on us, we can intercept each other's missiles in the air. But if you don't have something like a spaceship or a space station, you'll just have to wait for a beating. Because you don't know what missile the other side is playing, you don't know until the missile really falls on your head. Now it is said that human beings are a family, but are human beings a family? Is it a family now? Is Meiyi a family? Are Bush and Bin Laden a family?

Fifthly, manned space flight can promote the further development of rocket technology in China. China's "Long March" rocket has developed to a higher level and has the ability to launch spacecraft or small space shuttles. Without manned space flight, it would be difficult for China's rockets to develop further. China's "Long March" rocket entered the international commercial market for nearly 20 years and launched nearly 20 international commercial satellites, but China's rocket can't only launch satellites forever. Zhang Chengyu said that just like a person making tofu at the beginning, he can't make tofu all his life, but he must move on! Therefore, judging from the development of rockets in China, only by taking the road of manned space flight can we leap to a new level. Besides, China is the hometown of rockets and Chang 'e, so we can't miss space.

Sixth, manned space flight can drive and train a large number of high-tech talents. In the late 1980s and early 1990s, China's space team lost a lot of talents, resulting in a talent gap, which is an indisputable fact. An aerospace expert made a statistic in the late 1980s: the average age of scientific and technological personnel in China is 40 years old, and the oldest is over 90 years old! Such an age structure is definitely too old for a country that wants to modernize! But the young are too young; Middle-aged scientific and technological personnel have faults again because of "*". If China doesn't carry out such a big manned spaceflight project, a large number of technical backbones who took part in the work in the 1960s will soon leave their jobs, and the situation of the space team will continue to decline, resulting in a huge talent fracture! Liu Jiyuan said that there is a serious talent gap in China's space industry. People who can't attract talents now are generally considered to be poorly paid. In fact, the deeper reason is that the career itself is not attractive enough, and young people can't see the career and future that attract them. Most young people see far. What can they do in the most vigorous ten or twenty years? How can we better realize our own value? This is a problem that they must consider. If our decision-making lacks a long-term vision, what we make will not attract them, and if there are no decent projects for them to engage in, we will not be able to drive and train young talents, and it will be difficult to retain talents. Once there is a real talent gap, technology gap, experience gap, management gap, and even cultural gap, then there will be no successor to China Aerospace, and the achievements already made cannot be "preserved and increased". Not to mention catching up with the advanced world level, even the existing gap will widen!