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Good news, the J-20 fighter won the United Nations patent award design gold medal, if the United States and Europe "plagiarize" have to pay_China
Translated by google
2020-07-18
Recently, there has been another good news in the field of China's aviation industry. The "lifting body side-striped wing-duck layout" adopted by China's fifth-generation stealth fighter J-20 won the patent award issued by the State Intellectual Property Office and the World Intellectual Property Organization. . This is also the first time that China Aviation Industry Corporation Chengdu Aircraft Design and Research Institute has won a national patent award.
This is not only a high affirmation of the fuselage design of the J-20 fighter, but also an encouragement to the Chinese aviation industry. After the patent is authorized, the J-20 fighter will also protect the design results even higher. If Europe and the United States want to use related technologies, they must pay a patent fee.
When the country was founded, the industrial foundation was weak and the foundation was poor, and the aviation industry was completely blank. Not to mention the development of the independent aviation industry, because of the lack of funds, even the import of fighter aircraft seems quite embarrassing.
By the 1980s, the United States had launched F-16 and other excellent fighters, and China was still using old J-7 fighters. In the face of Western technological blockades, China is deeply aware that if fighter jets cannot be independently developed and manufactured, they will definitely be stuck on the battlefield in the future. Moreover, a country that does not develop and manufacture fighter jets cannot be said to have a complete industrial system.
From June 27, 1992, Russia delivered the first batch of Su-27 fighters to China, and in 1995 Russia finally agreed to China’s request to license China to manufacture J-11 fighters based on the Su-27, China gradually came out While importing, learn the path of independent research and development of fighter jets.
With the successful first flight of the J-10 fighter in 1998, it also marked that China had the ability to independently develop and manufacture advanced fighters. Subsequently, the fifth-generation stealth fighter F-22 of the United States entered the active military. Countries around the world began to deploy the fifth-generation aircraft in advance, and China is no exception.
In 2011, the J-20 fighter flew for the first time. This was China's first fifth-generation fighter, and it was also the third fifth-generation fighter in the world after the American F-22 and F-35 fighters. The J-20 fighter also entered the air force service before the Russian Su-57 fighter. It is not easy for China to leave the former "big brother" behind. Due to the long-term use of Sukhoi series fighters, the Soviet fighters have a major impact on the development and design of China's fifth-generation aircraft, and the classic "duck wing" layout of the Soviet fighters has also remained on the J-20 fighter.
Looking at the fifth-generation aircraft currently in service, China’s J-20 fighter is the only fifth-generation aircraft with a canard-wing layout. Some people will say that this is due to the limitations of China's aero engine technology. But there are pros and cons, not to mention that the fighter with this layout has been tested in actual combat and is a very mature design concept.
Compared with the traditional duck-wing layout, the J-20 adopts the duck-style layout while adding wing body fusion lift body and side wing design. By designing a pair of side strips between the canard and the main wing, the canards and side strips can increase the main wing at the same time, so that the maximum lift coefficient of the J-20 fighter exceeds 2, which is the current world lift coefficient. The largest fighter, and the US F-22 fighter lift coefficient is 1.6.
It can be said that the "lift body side strip wing duck layout" used by the Chinese J-20 fighter provides a very good technical reference for other countries in the development of the fifth-generation aircraft. China has proved with its own technology that it is not necessary to follow in the footsteps of the United States. The one that suits itself is the best, and the development and progress of technology also need to dare to try innovation.
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