Chapter 1015: We will succeed

"This is our first plan."
After everyone vented their excitement, in this large conference room, Ma Fengshan immediately held the first formal technical discussion on-site meeting of the C919 project, and took out the basic calculations in this conference room. No secret design draft is put into discussion.
"The first plan of the C919 passenger aircraft has a design length of 35 meters, a wingspan of 30 meters, and a height of 11.75 meters. The cabin adopts a circular cross-section and a diameter of 3.95 meters. Therefore, it can provide a cabin width of 3.75 meters. The typical level 2 cockpit and economy class 3+3 It can provide 155 seats in the layout of the aircraft; the aircraft adopts supercritical wing design, the maximum flight altitude is 11,000 meters, the economic cruising speed is 0.78 Mach, the maximum speed is 0.83 Mach, and the designed range is between 4,000 kilometers and 5 depending on the task and load. 1,000 kilometers; the designed empty weight is 41 tons, the maximum take-off weight is 75 tons, and the maximum fuel capacity is 24,000 liters."
After briefly introducing the basic design parameters of this aircraft, Ma Fengshan paused, looked around more than 300 pairs of eager eyes, and slowly said again: "In accordance with the clear requirements of the investor, the development of this aircraft It will be very different from the
Yun X
. First, it must fully comply with the design and procedures of the British, European Union and the United States’ airworthiness regulations; second, the design of this aircraft must take into account the main trends in today’s civil aircraft market. In order to ensure that the future will not lag behind the main competitors-such as: the use of two-person cockpit design; digital fly-by-wire control system; dual-engine extended range flight operation standard ETOPS level certification; power use advanced large bypass ratio turbofan engine and It meets the latest noise and environmental protection standards at airports in the United States and the European Community, etc. In short, the investor has set the design standards of this aircraft at the international advanced level, so the difficulties we face will be very great."
As he finished saying these words, there was a "buzzing" discussion in the house. The faces of everyone who had eased from the excitement just now were inevitably a little worried, because they all knew that they wanted to It is too difficult to meet the requirements of the investor, that is, Tan Zhenhua. With China's current basic industrial level and supporting capabilities in China, many things are simply impossible to do at present.
And let alone these subsystems on the C919, which are guaranteed not to lag behind in the future, even many subsystems on the "BAC1-11-700" airliner that only represents the level of the British in the 1970s must be fully localized. Difficulties are numerous. There are countless issues that require the support of the entire Ministry of Aviation Industry and even other ministries to start project research. As for the results, I don’t know how long it will take.
He should have seen the fear of difficulties on everyone’s faces, and Ma Fengshan timely comforted and cheered:
Before Zhenhua went abroad this time, he discussed this issue with me. In fact, he has quite a deep understanding of what the country can do at present. Everyone should know that the "Flying Leopard" that is currently undergoing intense test flight is actually a project invested by him. The aircraft also uses quite a lot of advanced technologies. I don’t think I need to tell you. These technologies are from Where did you get it?"
His words once again caused a buzzing sound of discussion, and Cheng Bushi directly asked everyone's voice: "Lao Ma, in this case, the C919 project will also introduce foreign collaborators, right?"
Ma Fengshan nodded and said: "Yes, under the current circumstances, introducing foreign partners with strength and technology is almost the only option we can quickly bring this C919 to the market, and we can quickly expand our market through this. Market share and enter a positive cycle of "input-output-technology upgrade", and Tan Zhenhua also believes that in the process of working with foreign partners, we can learn a lot of things, and all knowledge, The accumulation of technology will eventually be transformed into our own knowledge and technology reserves, and become the nutrients for China to improve the overall strength of the aviation industry
This is probably what Chen Yijian, the chief engineer of the "Flying Leopard", has the deepest feelings. He has tasted the sweetness now. The plane has not even completed the test flight. There are already 3 regiments of foreign trade orders waiting for him, the Navy's order. It has been determined that there will be no less than ten regiments, and even the Air Force, which was completely indifferent to this model before, has now turned back and reopened negotiations with him, and most importantly, the entire "Flying Leopard" The design team, after the tempering of this large project and the introduction, digestion and absorption of a large number of new technologies, its ability can be said to have risen to a large level. Even the domestic sub-system development units have followed it. The overall technical level has also been greatly improved. "
"Old Chen has fought a turnaround this time." Wu Xinshi also said with emotion: "From the time when the two services were arguing about the design plan, until the subsequent projects were almost dismantled and suspended, he also suffered a lot in the early stage. However, With Tan Zhenhua’s intervention, the operation of the entire project became smooth. The design plan can be optimized, the lack of technology can be introduced in a way, and the lack of manufacturing equipment is bought in large quantities from abroad under the banner of the "BAC" project. , Even the design methods have evolved from low-efficiency full manual to full computer-aided, not to mention the obvious improvement of the manufacturing process level after matching the new CAM system-look at the smooth and smooth exterior of the "Flying Leopard" fighter I know it on the surface. When I first met, I couldn't believe that this was an airplane made by our country!"
"This is not a simple improvement in appearance." Cheng Bushi also sighed: "In fact, it is a fundamental change in the entire manufacturing system. In the past, every part we manufactured had large tolerances. This allowed us to When assembling the whole machine, a lot of repairs have to be carried out, and these repairs not only affect the performance of the whole machine, but also bury hidden dangers for the versatility of future parts and components, and greatly affect production efficiency. Now, Looking at the second batch of "Flying Leopard" verification aircraft and "BAC" passenger aircraft on the production line, I dare to say that we now have the most powerful and sophisticated manufacturing methods in China, and we will definitely be able to create China. The best airplane!"
Seeing that with the beginning of himself and the two old comrades in arms, the little fear of hardship that was just shown on everyone’s face has gradually disappeared, replaced by a renewed firm expression and eagerness to try, and Ma Fengshan added the last fire. :
"Our C919 aircraft is much smaller than the "Yun X" aircraft. The length of the aircraft has been shortened from 42.933 meters to 35 meters, and the wingspan has also been shortened from 42.242 meters to 30 meters. The requirements for processing equipment have dropped by a large order of magnitude; The 30,000-ton die forging transformation project of Southwest Aluminum Plant invested by Zhenhua has been completed. After testing, it can fully meet the overall forging requirements of all titanium alloy load-bearing structural parts of our C919 aircraft. The biggest problem encountered on "Ten" will no longer exist this time; the 10-ton carbon fiber pilot line of the Beijing University of Chemical Technology has also been put into production, which can at least meet the material requirements for the development of our aircraft prototype; I heard that the development plan for the first T300 carbon fiber production line with an annual output of 1,000 tons is also on the list of key technical research projects of the Ministry of Chemical Industry. Compared with our helplessness when faced with the serious overweight problem of the "Yun Ten" body, these steps The basic industries in the front have already laid the groundwork for us, so I personally believe that this time, our C919 plan will be successful!"
"Yes, this time, we will succeed!" Wu Xinshi and Cheng Bushi also clenched their fists and shouted in a low voice.
"We will succeed!" This is a declaration issued by everyone in this office!