Civil aviation resource net news on December 9, 2011:7 to 9 December 2011, the ministry of industry and information technology organizations in Shanghai held its C919 large passenger aircraft project preliminary design review and transfer session. Ministry of industry and information technology, vice minister of Sue spread to the relevant person in charge of equipment industrial company, China commercial aircraft co., LTD. Jin zhuanglong, vice general manager Shi Jianzhong, Wu Guanghui, Shanghai via letter ShangYuYing, deputy director of the committee and the headquarters of avic authorities, civil aviation the relevant person in charge of examination and approval center, attended the meeting in Shanghai. Invited the 51 from avic, comac and final assembly base, as well as the civil aviation administration of the unit, China southern airlines, Shanghai airlines, happiness aviation and civil aviation operations unit, the member of beihang university, China southern, ms of (6), experts as members of the review panel, and established the expert review committee.

    Watched the C919 project preliminary design stage in development of documentary work, listened to the C919 large passenger aircraft overall technical scheme and the preliminary design stage to develop work progress , the C919 four sex , three minus design indexes such as project technical report, the C919 avionics system technical scheme, the flight control system of the C919 project technical scheme, the C919 project. Most of the period of design, manufacture and test report, the C919 airliner airborne systems equipment supplier development task division and domestic and foreign joint venture cooperation progress report after meeting report, combined with the comac on September 23 and 25 completed preliminary design review based on the corporate level, it is divided into general, avionics/flight control system, the structural strength/process, integration technology and management of four professional panels for 1 and a half days of group review, and evaluation conclusion is formed. On December 9th morning, evaluation experts committee officially announced the review conclusion, agreed that the comac C919 large passenger aircraft project preliminary design stage development work is complete and effective, the overall technical scheme is feasible, can enter the detailed design stage. Subsequently, deputy minister of industry and information technology, Mr. Su the higher management authority on behalf of the country officially declared the C919 large passenger aircraft project into the detailed design stage.

　　Ministry of industry and information technology, deputy minister Mr. Su in his speech, pointed out that comac since its establishment, adhere to promote large aircraft development as the central task, poly national power, the wisdom of all over the country, to carry out the overall design and preliminary design work, the C919 large passenger plane fast and high quality all tasks completed the preliminary development stage, the preliminary design scheme obtained experts recognition and welcome of the market. He asked comac and various research units to carry on meticulous, in the spirit of unity and cooperation, adhere to safety first, independent innovation, for the successful completion of the detailed design stage and engineering development stage all tasks, and make unremitting efforts of China's large aircraft to soar the skies.

   Based on overall technical scheme through expert review of the C919 large passenger aircraft, the C919 aircraft for single channel and medium-range commercial trunkliner level 150, with orders sweepback wing, wing hang engine, normal type rear wing and the former three retractable landing gear general layout, its basic economic layout 168 seats, hybrid layout for 158, basic range of 4075 km (2200 nm), increase the flight distance is 5555 km (3000 nm); Aircraft USES the integrated, modular, open avionics system and advanced fly-by-wire control and active control technology; Options on the plane passengers personal entertainment systems, wireless Internet service and personal mobile communication services.

    Determine the general technical scheme, according to the C919 large passenger aircraft has significant safety, economy, comfort and environmental protection. Aircraft adopts the advanced supercritical airfoil and the wing tip winglet, wing hang - comprehensive optimization engine nacelle integration, choose a new generation of advanced Gao Han way than turbofan engine, the use of composite materials, such as advanced lithium aluminium alloy materials, empty weight is currently operating with low level jet by more than 2%, direct use cost is reduced by more than 10% similar jets in active service, nox emissions 50% lower than the requirements of the international civil aviation organization. Large aircraft fuselage to provide more passengers aboard a space, high efficiency air filtration system provides the high quality for the passengers of fresh air, humanized scene cabin illumination for passengers to create warm and considerate and comfortable environment.

　　Comac company general manager welcome Long Jieshao, C919 large passenger plane overall technical solution design work from the start in July 2008, basic overall technical solution in December 2009 by the ministry of industry and information technology audit, after the project officially into the preliminary design stage. In the preliminary design of two years, comac organization of domestic airlines and aviation maintenance unit has carried on the investigation and research, collect and analyze the aircraft maintenance, use, and customer service requirements, etc., for the plane design and customer service work provides strong support. In the process of aircraft design and optimization, the comac organized a large amount of fluid mechanics calculation and validation work. For early assessment of structure the rationality of the technical scheme, comac company chengdu, hongdu, flying, sac, hafei, such as the body's supplier in China specially developed a display, engineering, digital prototyping and lithium aluminium alloy fuselage straight section, seven large segments, such as hanging, flat tail had done many structure r&d test and strength test, etc. In the trial-manufacture of prototype and the sample, broke through a number of technical challenges, practice a variety of new technologies, new processes, filed multiple patents, good consistency with experimental data and theoretical calculation.

　　The C919 large passenger aircraft project in determining the technical solution at the same time, the manufacturing preparation and guarantee work has almost ready. Comac has completed five production lines for tooling requirements definition and preliminary concept design, and launched the advanced tooling bidding procurement; Chose 11 suppliers, 17 foreign body structure system 141 material/standard parts suppliers and suppliers; First start process preparation and assembly tooling design work has begun.

　　C919 large passenger aircraft development will be divided into project argumentation and feasibility, preliminary development, overall scheme definition, preliminary design), project development, detailed design, comprehensive test and flight test evidence), batch production and industrialization of four stages. Enter the detailed design phase, the C919 large passenger aircraft project will carry out the detailed design, distribute all production data, the trial began to comprehensive and strive for aviation authority jaa will enable implementation first flight in 2014, 2014 and delivery of the user. (source: China aviation news)