Abstract:

This paper analyzes and summarizes the general tendency of structure technology development for large commercial aircraft through an analysis of the advanced commercial aircraft and their research plans in the world. The present state and future tendency in the selection of materials, structure design, manufacturing technology, structure strength analysis, and lightning protection technology for advanced large commercial aircraft are introduced. The final conclusion is that composite materials will replace metal structure, and the design and manufacturing technology of metal structure will also be developed to meet the new challenge brought by the use of composite materials.Advanced digital structure design and simulation technology will replace traditional design on paper.The relevant analysis and simulation tools such as CFD will be introduced into digital design,resulting in great reduction of testing and quality improvement during the R D of a new aircraft.Some new concept structures will be used in aircraft structure widely;for example,smart structure will be used in the aircraft wing to improve aerodynamics,aircraft aero-elastic control and structure health monitoring.

Key words: large , commercial , aircraft,  , structure , technology,  , material , selection,  , structure , strength , analysis,  , composites