Rebirth of science and technology academic master

The World Congress of Chinese Mathematicians is a grand event! It is a grand gathering of Chinese mathematicians at home and abroad and an important channel for communication between Chinese mathematics and world mathematics.

Not only the top Chinese mathematicians such as Qin Yuanqing attach great importance to it, but also other Chinese mathematicians, and even the government attaches great importance to it. The leaders in charge of this part of the work attended this conference.

After all, for the government, promoting exchanges between compatriots at home and abroad has always been a major matter. It has always spared no effort and made every effort to promote exchanges at home and abroad.

The rejuvenation of China not only relies on the mainland, but also relies on the concerted efforts of descendants of Yan and Huang at home and abroad to restore the scene of the Han and Tang Dynasties.

Similarly, by asking overseas compatriots to go home and visit more, we can also use the words of overseas compatriots to convey China's great achievements to other overseas scholars, change overseas perceptions of China, and attract other top overseas scholars to conduct academic studies in China. Visit or even work in China.

The leaders of the World Congress of Chinese Mathematicians made great efforts in those years. The World Congress of Chinese Mathematicians has become stronger and more influential in recent years, not only due to the efforts of mathematicians, but also to the strong support of the Chinese government.

Qin Yuanqing focused his main time and energy on the conference, not only participating in academic discussions, but also leading everyone to visit Tsinghua Garden, Yanda Campus and Shuimu University Shahe Campus. Similarly, when scholars asked for advice during the conference, Qin Yuanqing did not spare any effort to answer. Cultivating young Chinese mathematicians is also a major mission of Qin Yuanqing. Although none of these mathematicians are younger than him, Qin Yuanqing still hopes to be able to do so again. The birth of a Fields Medal winner will also strengthen the influence of Chinese mathematicians in the world of mathematics.

In the world of mathematics, we do not look at the number of ordinary scholars, nor the number of first-class mathematicians, but the number of top mathematicians, especially the number of top mathematicians.

Qin Yuanqing is relatively optimistic about this, because both Zhang Wei and Deng Tong have a chance to win the Fields Medal.

When you reach a certain level, you no longer limit yourself to the Shuimu Department or the Yan University Department, but look at the entire Chinese community. Otherwise, Qin Yuanqing would have students graduating every year, but Qin Yuanqing did not stay in Shuimu, but supported them to go out as much as possible and do it alone. knowledge.

Great Sage Qin is not just talking.

This conference attracted a large number of mathematics enthusiasts. Although some mathematics enthusiasts could not understand it, there were also some mathematics enthusiasts who gained a lot.

On the last day, the 7th World Congress of Chinese Mathematicians came to an end with applause. The next one will not be held until 2019. The most popular news in the past few days are several ICCM Mathematics Award winners, who have received great recognition. The exposure also makes people aware of these rising mathematicians.

With the conclusion of the Seventh World Congress of Chinese Mathematicians, Qin Yuanqing's energy has returned to scientific research work, because the design of the Phantom stealth strategic bomber has been completed, and a preliminary design review needs to be held next.

The Aero Engine Research Institute sent the report to its superiors, who immediately attached great importance to it. After all, the Aero Engine Research Institute has continued to make great achievements in recent years, including the Everest aircraft engine, the Gefeng aircraft engine, the heavily armed helicopter aircraft engine, and the heavily armed helicopter engine. From helicopters to the Y-30 large strategic transport aircraft that has been successfully tested, the results of any of them are sensational. This has led to the continuous upgrade of the security measures of the Aero Engine Research Institute, and now there is a platoon to carry out security measures at any time.

Moreover, the scientific research projects of the Aero Engine Research Institute also allowed superiors to see a unique model, that is, a research and development unit first spends money to conduct research and development, and after the research and development is successful, the relevant departments will then buy out the technology and pay for it. This can effectively control risks. Now superiors are exploring the feasibility of this method and whether it can be applied to other scientific research institutions.

When the day came for the preliminary review, Qin Yuanqing and others were taken to a secret base with very high security measures. It can be seen that the level of this preliminary review was as high as the previous preliminary review of the Y-30 large strategic transport aircraft project.

Although the H-20 stealth bomber has already undergone test flights, at present, the performance of the H-20 stealth bomber is indeed far ahead of the H-6. However, in terms of bomb load and other performance, the combat range is actually destined to be limited.

Therefore, the ‘Phantom’ stealth strategic bomber design proposed by the Aero Engine Research Institute can undoubtedly make up for the high-level requirements.

The entire preliminary review time is planned to take one week.

As the chief engineer of the Phantom stealth strategic bomber, Qin Yuanqing was the first to introduce the basic parameters and performance of this bomber.

"Dear leaders and experts, the 'Phantom' stealth strategic bomber we are developing is aimed at the American B2 stealth strategic bomber. Its main feature is low detectability, which is commonly known as stealth capability. It can This allows it to safely pass through a tight air defense system to attack." Qin Yuanqing said: "The stealth of the 'Phantom' stealth strategic bomber is not limited to the radar detection level, but also includes reducing different signals such as infrared, visible light and noise, so that it can be The possibility of detection and locking is minimized.”

"According to the design parameters, without refueling in the air, the combat range can reach 12,000 kilometers, and a single in-flight refueling can reach 18,000 kilometers. The air flight time for each mission is generally not less than 10 hours. Once it is put into service, it will basically It has 'global reach' and 'global destruction' capabilities."

"The 'Phantom' stealth strategic bomber has a length of 21.03 meters, a height of 5.18 meters, a wingspan of 52.43 meters, and a wing sweep angle of 33°. The middle part of the aircraft is raised to accommodate the cockpit, magazine and electronic equipment." Qin Yuanqing pointed to the aircraft The model introduced: "The installation of lithium-air batteries in these parts can ensure that the aircraft can fly 12,000 kilometers at a speed of 600 kilometers per hour at an altitude of 1,500 meters without fuel after performing a mission!"

After the lithium-air battery was successfully developed, Qin Yuanqing naturally would not let it sit like this, so the spaces in the Phantom stealth bomber that were not suitable for use were transformed to accommodate lithium-air batteries.

Of course, this lithium-air battery cannot support high-altitude and high-speed flight of aircraft, because the oxygen at high altitudes is too thin to ensure that the battery can effectively function, but there is no doubt that it can be used as an aircraft under special circumstances.

After hearing Qin Yuanqing's introduction, all the leaders and experts were stunned by the advanced performance of the Phantom stealth strategic bomber. This is not only a benchmark for the American B2 stealth bomber, but also has better performance.

But can China build such an advanced strategic bomber?

Leaders and experts couldn't help but feel a little unsure. The H-20 stealth bomber had not been able to conduct test flights so quickly. This was mainly due to the international situation and the fact that some key technologies had made breakthroughs in the Y-30 strategic transport aircraft and were transplanted to the H-20. On the stealth bomber, the H-20 stealth bomber has just completed its test flight.

The performance of the 'Phantom' stealth strategic bomber is one level higher than that of the H-20 stealth bomber, and its invitation to technology and craftsmanship is undoubtedly higher.

The United States was able to produce the H-20 stealth bomber, firstly because the United States itself is very powerful in high-precision manufacturing, and secondly because the United States has a global industrial chain that can purchase corresponding materials and accessories from other countries.

But China can't do that. It has to rely on itself in this regard.

However, they did not raise questions directly. After all, raising questions without basis would only repeat the mistakes of the last Y-30 strategic transport aircraft.

Who in the industry doesn't know that the Aero Engine Research Institute is different. Other development units are polite to leaders and experts. Even if the questions raised are not so professional, the development units will not refute them. But the Aero Engine Research Institute is different. If you don’t have data to support you during the review, the researchers at the Aero Engine Research Institute can slap the table and question your professional level. If you question your level, you can still be an expert.

"Academician Qin, according to your estimate, how much does this 'Phantom' stealth strategic bomber cost?" The leader asked the question he was most concerned about. The performance of the aircraft is excellent and good, but the cost is also very important.

"Leader, based on the current plan, we have calculated that the cost of a 'Phantom' stealth strategic bomber is 9 billion yuan, which is approximately 1.52 billion U.S. dollars!" Qin Yuanqing said.

Today, the exchange rate of the US dollar against the RMB has been fluctuating between 1:5.9 and 1:6.0, and the era of 1:7 has been declared gone forever.

In the past, China relied on a large amount of foreign exchange reserves to act as a shadow currency. At that time, as more and more U.S. dollars were printed, it was no longer an option for China to follow suit, so there was an appropriate appreciation. Although it was somewhat detrimental to exports, it is still acceptable for now.

The leader couldn't help but breathed a sigh of relief when he heard this. Although it was slightly higher than the cost of the H-20 stealth bomber, it was still acceptable. After all, compared with the excellent performance, such a cost was still within the acceptable range.

After all, the cost of building a B2 strategic bomber in the United States is US$2.4 billion, and this was US dollars 20 years ago, and it is estimated to be even higher now.

The reason why the cost of the Phantom stealth strategic bomber is lower than that of the B2 stealth strategic bomber is that it is completely domestically produced. China's labor costs, electricity costs, etc. are several times lower than those of the United States, so the cost will naturally be reduced.

Otherwise, the cost of the Phantom stealth strategic bomber will be similar to that of the B2 stealth strategic bomber, and it will not be much cheaper.

You get what you pay for, and with so much high technology, the cost is naturally high, and this cannot be changed.

Unless large-scale mass production is carried out, it is possible to significantly reduce the cost. However, the Phantom stealth strategic bomber is destined to be impossible to mass-produce on a large scale. It is already very difficult to produce 10 or 20 aircraft. Fantastic.

After all, this is a time of peace, not a time of war. Militarism is undesirable.