C9 19 is completely designed by our country. Chen Yingchun, the executive deputy chief designer of the project, said that the joint conceptual design is the most critical part of the project, including determining the layout of the wing, fuselage, tail, engine, landing gear and other components, the parameters of voyage and seat level, the engine magnitude, power supply and what kind of system to install.

"The aircraft body, from design, calculation, testing to manufacturing, is made by China people themselves." Chen Yingchun said, "We also independently completed the system integration of the aircraft."

Taking the passenger cabin as an example, Wu Shixing, a member of the National Expert Advisory Committee on Major Special Projects of Large Aircraft, introduced that C9 19 was designed to start with 150 seats in combination with the domestic market demand, and this scale of aircraft can be applied to more than 70 domestic airports.

At the same time, it has the most spacious cabin in the current 150 single-aisle passenger aircraft, and its comfort is obviously better than all competing models. Its cabin noise can be controlled below 60 decibels, which is better than 80 decibels of similar models.

Adopt a new air distribution system to make the air fresher, more uniform and with appropriate humidity. The design of the air outlet can speed up the air flow and prevent passengers from feeling uneven heat and cold. The somatosensory temperature target comes from the experimental data of China population.

C9 19 owns the national independent intellectual property rights.

The full name of C9 19 is "COMAC9 19", which is the abbreviation of COMAC, the main manufacturer of C9 19. "C" is the initials of COMAC and the initials of CHINA's English name "China", so it can be seen that the large passenger plane is the will of the country and the expectation of the people.

The first 9 means "forever", and 19 means C9 19. The maximum passenger capacity of a large passenger plane is 190. For such a complex product as a large aircraft, the overall design is extremely important. Without the overall design, even if the world's best engine, fuselage, flight control, telex and so on are combined, you can't get a flying plane.

Wu Guanghui, the chief designer of C9 19, said that C9 19 is a trunk aircraft independently designed by the state and has completely independent intellectual property rights in the overall design of the aircraft.

The external "shells" such as nose, fuselage, tail wing and wing come from Cheng Fei, Hongdu, Shen Fei and Xifei enterprises in China, while many other key components come from foreign enterprises.

It is reported that global procurement is a major feature of civil aircraft manufacturing, and suppliers of Boeing and Airbus also come from all over the world. However, a major mission of C9 19 is to promote the development of domestic civil aircraft industrial chain, and it is believed that more and more parts will come from China enterprises.

Xinhuanet-Decryption of China's first commercial passenger plane C9 19: Completely independent domestic products.

Reference to the above content: Baidu Encyclopedia -C9 19