Yun -20 is advanced enough.

Yun -20 is advanced enough, but it is only a 200-ton transport aircraft.

Yun -20 is a miracle, but it is definitely not the ceiling of China aviation industry. There is no doubt that it will continue to break through. It is imperative to develop a 400-ton super transport aircraft, and it will certainly be realized. First of all, we must have enough confidence in the scientific and technological achievements behind Yun -20. It is not impossible to develop a 400-ton transport aircraft.

It is generally believed that Yun -20 is China's version of Il -76, or there are many similarities between them. But in fact, Yun -20' s late-comer advantage can be far from that of Il -76. It has the opportunity to enter the international market and create high-quality jobs, which fully demonstrates the technical strength of China aviation industry's optimal design, and also gives us confidence to enter the more advanced transport aircraft field. The maximum takeoff weight of Il -76 is only 2 10 ton, while Yun -20 is more than 2 10 ton.

After all, the Il -76 was designed in the 1960s. During its service life of more than half a century, Russia has been optimizing its design. The maximum takeoff weight has soared from 190 tons to 2 10 tons, and the load capacity has also increased from 45 tons to 60 tons. This progress is often based on the improvement of fuselage materials and production technology.

Yun -20 fuselage has a high proportion of composite materials, which has played a role in reducing the weight of the fuselage and improving the transportation capacity. Therefore, our Yun -20 has a load capacity of 66 tons from the beginning, which exceeds the highest upgrade potential of Il -76.

In addition, the cargo hold of Yun -20 has also been heightened and widened, and the internal volume is increased by 1\3 compared with that of Il -76. This is because in the past 50 years, the cargo transported by air has become larger and larger, and the cargo hold size of transport aircraft must be further increased.

In a word, Yun -20 is the crystallization of modern science and technology, while Il -76 is only the posthumous child of the last century. We can master this late-comer advantage, which means that we can explore to a higher field and develop a 400-ton super transport aircraft.

Il -76 has a wingspan of 50.5m and Yun -20 is only 45 m; The Il -76 fuselage is 46.6m long, and the longest improvement is over 53m, while the Yun -20 fuselage is only 47m long. It can be seen that Yun -20 is slightly thicker and shorter. Won't this design increase flight resistance? The answer is, of course, yes.

However, the engine technology of China aviation industry allows this phenomenon of increasing resistance to exist. The turbofan-18 used in Yun -20 is an imitation of D-30KP2, but it is 300kg lighter than the latter, so the weight of the two engines is reduced by 600kg, the maximum thrust can reach about 12t, and the most important thing is that the fuel consumption is reduced by 1.

From the military strategy point of view, China's topography is rich and diverse, mostly mountainous and hilly, especially the Qinghai-Tibet Plateau, Xinjiang desert, Sichuan basin and other topography. Instead of building a railway network at all costs, it is better to build more large transport planes.

In addition, the east-west span and the north-south span of our territory are mostly over 5,200 kilometers. It is not enough to race against time just by relying on the speed of railway maneuvering. It is necessary to form an air transport fleet like the US military to ensure that the main force can go to the front at any time.

The C-5 Galaxy transport aircraft with a maximum takeoff weight of about 380 tons is a good example. Its cargo hold can hold nearly 65,438+030 tons of goods. The US military used it to fly 16 hours12,900 kilometers. After we have it, it takes only six hours to cross the east-west border of the motherland, whether it is to supply barracks on the plateau or to drop it to the islands and reefs in the South China Sea.

Before the Gulf War, 6,543.8+6,000 US troops and 320,000 tons of materials were transported to the front by transport planes, so it is difficult for us to send troops to the Qinghai-Tibet Plateau and South Island Reef.

It will not be less difficult than the US military sending more troops to the Gulf. Yun -20 alone can't meet the needs, and 400-ton transport aircraft is the first choice. Finally, large transport planes, like large passenger planes, are the heavyweights and future of the country, and also the breakthrough of China's social economy to a higher level, which should be strongly supported emotionally and intellectually.

China has a population of/kloc-0.4 billion, and higher education ranks among the top in the world. Every year, a large number of high-quality engineering and technical personnel need employment, which cannot be digested by existing electronics factories, electrical appliances factories, automobile factories and shipyards. We must expand the industrial chain to the aerospace field and create more high-quality employment opportunities.

According to the statistics of the Blue Book of China Campus Recruitment in 20 18, there are about 8.2 million college graduates this year. The proportion of science and engineering graduates is as high as 58.65%, which means that at least 4.8 million people need employment. Even if Tesla electric cars come to China to build factories, it will not be enough to meet the employment demand.

China's automobiles, ships, electronic appliances have reached a large scale, and only the aerospace industry has great room for growth. If there are aviation giants such as Boeing and Airbus, the whole aviation industry chain will flourish, and there will be no need to worry about employment. All this is possible only when we enter the large aircraft manufacturing industry.

Resource exploitation, real estate, infrastructure, labor-intensive industries, etc. It is no longer the main driving force of our economic growth. Aerospace and other high-tech industries are the right way, and the research and development of 400-ton transport aircraft is only the beginning.