Developing large aircraft and its engines is a strategic decision made by the CPC Central Committee and the State Council in the new century. In the Outline of the National Medium-and Long-term Scientific and Technological Development Plan and the Outline of the Eleventh Five-Year Plan, the state has listed large aircraft as a major special project, and it is required to finally equip large bypass ratio turbofan engines with independent intellectual property rights, including military and civilian large aircraft engines, which is a national strategic goal that must be achieved.
The engine is the heart of the aircraft, and the turbofan engine with large bypass ratio is the key to independently develop large aircraft. Without the breakthrough of engine technology, it is impossible to grasp the initiative in the development of large aircraft. Civil aviation engine is an important pillar of aviation power industry (the output value of foreign civil engines has reached 80% of the total output value). Without the development of civil turbofan engines with large bypass ratio, there would be no independent, complete and powerful aviation power industry and aviation industry.
According to the forecast of relevant departments, in the next 20 years, China will need about 800 trunk passenger planes with 150 seats. Together with other large aircraft, * * * will need about 2,750 large bypass ratio turbofan engines for both military and civilian use, with a total value of $4 12 billion, equivalent to about RMB 330 billion. Large bypass ratio turbofan engine has a wide range of uses, huge market, remarkable economic, military and social benefits, and has great promotion and strategic significance for national economic development, national defense construction and scientific and technological progress.
Development status and gap
After years of development, China has made some achievements in the field of aviation power technology, and has certain scientific research and production capabilities in military turbojet and small bypass ratio turbofan engines. More than 60,000 aero-engines of dozens of models have been developed and produced, and dozens of Zhong Junmin aircraft have been equipped, which has made its own contribution to the equipment construction of the Air Force and the development of civil aviation. In the aspect of large bypass ratio turbofan engine for large aircraft, the key technologies such as fan/booster stage and high-pressure compressor are preliminarily studied, and with the support of aviation propulsion technology verification plan, a verification platform of large bypass ratio turbofan engine based on Taihang engine design core engine is established. However, compared with the international advanced level, there is still a big gap, the technical foundation is relatively weak, a large number of key technologies have not been broken through and mastered, some test equipment is still lacking, engineering design and use experience are lacking, and independent research and development is difficult.
Related materials and technologies are one of the key technologies of turbofan engine with large bypass ratio, so it is necessary to arrange plans as soon as possible to tackle key problems and make breakthroughs. The development of turbofan engine with large bypass ratio needs special processing and testing means, which must be supplemented and improved as soon as possible on the existing basis and in accordance with the principle of combining military and civilian. Such as: field test-bed, environmental test-bed, No.2 high altitude cabin, rapid response scientific research and trial-production force, etc.
China news agency, Shanghai, August 26, 2009: Zhang Jian, general manager of Commercial Aircraft Engine Co., Ltd. said here on August 26 that China's first self-developed large aircraft engine is scheduled to complete its test flight 20 16 years ago and be certified and put into commercial operation by 2020.