In order to reduce the weight and pursue a higher culmination ratio of large culmination ratio commercial turbofan engines

the use of composite fan blades has become the trend today. The development and application of composite fan blade are introduced

and the material application

mold design and main manufacturing process of blade are summarized

including prepreg hand lay-up/autoclave process

automatic fiber placement process/autoclave process

3D-woven carbon fiber reinforced resin transfer molding (RTM). At the same time

the mold material selection and structural design of Hexcel

Snecma

Rolls-Royce and other foreign companies' composite fan blades are introduced respectively

and the characteristics of the three manufacturing processes are compared and analyzed. Finally

the key technologies for manufacturing composite fan blades are summarized

and it is pointed out that the manufacturing technology of composite fan blades is now developing towards the trend of mixed material forms

automation and selfadaption of manufacturing processes

diversification of tooling materials.