Based on the importance of overall parameters for the subsequent detailed design

the potential problems of the strength in the concept design phase was investigated

then the effects of design parameters

such as AN2

wheel speed

solidity of blade and performance of the materials

on strength and life were studied.The results show that the values of AN2 for the advanced turbofan aero-engine are within 25m2·(r/min)2

the wheel speed is related to disc shape factor which must be designed with 2

the solidity must be designed to satisfy the strength of the fir-tree

and stress at the root of the blade must be defined within 250MPa to avoid failure from LCF(low cycle fatigue) and creep.These results would be useful for the turbine blade design of advanced aircraft engines and gas turbines.