Shulou(Shulou.com)11/24 Report--

CTOnews.com news on October 1, September 29, the Civil Aviation Administration of China held a ceremony at the Beijing Capital Airport to formally issue the C919 aircraft model certificate to Comac. This marks that large aircraft developed by the Chinese themselves can be delivered to airlines to operate on domestic routes.

The Chinese may have been looking forward to this day for nearly half a century.

What is the behind-the-scenes attack in the research and development of the C919 aircraft, and why do the Chinese have to build their own big planes? Zhang Yanzhong, academician of the Chinese Academy of Engineering, gave an answer in an interview:

For a long time, there has been internal and external disputes in the technological path of the development of large aircraft in our country, and the main focus is: independent development or international cooperation? Over the past few decades, it can be said that we have taken a difficult, tortuous and bumpy road in the introduction and cooperation of large aircraft technology.

Later, the National Committee of experts on Major Major aircraft projects conscientiously studied and summed up experiences and lessons, and we believed that it is not feasible to build the technological path for the development of large aircraft on the basis of relying on foreigners' leadership, and the core technology of aviation cannot be bought with money, nor can it be exchanged with the market. Only by taking the road of independent innovation and self-reliance can we build our own big aircraft.

He believes that China has a population of 1.4 billion, and there is a great demand for large aircraft. China, as a large civil aviation country, cannot rely on the import of foreign aircraft for a long time. There is also a risk of sanctions by buying aircraft from abroad, so China must develop its own large aircraft.

We spend tens of billions or hundreds of billions of dollars on airplanes every year. The logic in the past is: it is better to build than to buy and to rent. We're gonna turn it upside down now! First of all, we have to spend more money to develop and build our own aircraft, so as to form independent and independent capabilities.

He pointed out that large aircraft is the flower of industry, the representative of the high-end equipment manufacturing industry, the landmark project of an innovative country, and the symbol of a manufacturing power. Whether a big plane can be built or not represents the level of industrialization of a country. To be able to build large airplanes and aero-engines, this country is at a high-end manufacturing level, which is also a reflection of the overall strength of the country.

In addition, the research and development of large aircraft promotes the development of related industries and technologies, 80% of which can be transferred to other industries. promote the development of material metallurgy, equipment manufacturing, electronic information, computing technology, fluid mechanics, solid mechanics, thermodynamics, material science, information science and so on.

Zhang Yanzhong also revealed that more than 200,000 people, more than 20 provinces and cities, more than 200 enterprises and more than 70 colleges and universities have participated in the research and development of C919.

He said: our C919 aircraft is very advanced, with relatively low fuel consumption, relatively many advanced materials, relatively light weight, good cabin comfort and spacious space. environmental protection also meets or exceeds the standards set by the International Civil Aviation Organization (ICAO) and can reach the level of Boeing 737 and Airbus 320 in performance.

I can say this, this time, our C919 plane can not fall into the same fate of Yun 10, we will certainly succeed.

When China began to board big planes 15 years ago, foreign countries thought we could not build them. At that time, American Aviation Weekly mocked that the Chinese wanted to build big planes in order to "pretend to attack in order to retreat." Now that the C919 has been built, it shows that we are not pretending to attack in order to retreat, we have really done the big plane!

According to reports, the C919 large aircraft began to set up a project in 2008, went through the design, trial production, and test stages, lasted nine years, flew for the first time on May 5, 2017, and now, after five years, has completed all the test flight certification work, and will be delivered to the airline (China Eastern Airlines) at the end of this year.

According to CTOnews.com inquiry, Zhang Yanzhong is an expert in aviation systems engineering, a doctor from Cambridge University and an academician of the Chinese Academy of Engineering. As the initiator, promoter and pioneer of China's large aircraft and aero-engine project, in the past 20 years, he presided over the research and put forward the overall plan of China's large aircraft special project I and II, and presided over the formulation of the implementation plan of China's "two engines" (aero-engine and gas turbine) special project I and II. He presided over the study and put forward the "Airborne system upgrading Plan", which systematically promoted the strategic development of China's large aircraft, aero-engines and airborne undertakings.

Zhang Yanzhong is currently the director of the national large aircraft special expert advisory committee; the director of the national "two aircraft" (aero-engine and gas turbine) special expert advisory committee; the chief designer of large aircraft independent engineering; and the head of the expert advisory group of Comac. It can be said that the C919 aircraft was born under the strong promotion and guidance of Zhang Yanzhong and other core experts.

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