Important achievements have been made in the major science and technology projects for large aircraft, with domestically made large transport aircraft, large passenger aircraft and large amphibious aircraft making their maiden flights. Large aircraft is a highly integrated modern high and new technology, which can drive the group breakthrough of key technologies in new materials, modern manufacturing, advanced power, electronic information, automatic control, computer and other fields, and can drive the development of many high-tech industries. The technology diffusion rate of large aircraft is as high as 60%.Large aircraft is at the top of the industrial chain of science and technology, can be called to pull the industrial technology chain of the total leader, its development for driving China's technological progress and industrial upgrading, to strengthen the strength of the national industry is of great significance.
Material is the foundation and forerunner of advanced modern high technology and industry, and to a great extent is the condition for high technology to make breakthroughs. The development of aviation materials plays a strong role in supporting and guaranteeing aviation technology. In turn, the development demand of aeronautical technology leads and promotes the development of aeronautical materials. Since the 21st century, the development of aviation industry has entered a new stage, which will promote the development of aviation materials in the direction of higher quality, newer quality, stronger function and more economic efficiency.