Accurate rotor balancing is an important measure to reduce the fundamental frequency vibration of engine. For the large balance error in the high-pressure rotor of a certain engine

based on the analysis of the rotor structure and the individual balancing process

it is judged to be caused by low shape and position accuracy of the simulation rotor balance tooling through the comparison test and the position tolerance check in the simulation rotor balance. Therefore

the optimized combined balance process method is built

and the principle of high-pressure compressor blades adjustment and counterweight installation optimization are put forward. The application results show that the methods can meet the engine vibration requirement and effectively reduce the balance error of the high-pressure rotor

which is providing reference for the following application of high-pressure rotor combination balance for other engines.