| Citation: | WAN Zhao, CHEN Yalong, ZHOU Yi, et al. Study and verification of on-site fan rotor balance of high bypass ratio aero-engine[J]. Journal of Aerospace Power, 2025, 40（3）：20230599 doi: 10.13224/j.cnki.jasp.20230599
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The theory and engineering approach for on-site balancing of fan rotors in high-bypass ratio aero-engines were studied to address crucial aspects such as identifying variable amplitude speed impulse signals, establishing the correlation between vibration signals and the angular location of rotor imbalance, and expeditious balancing screw arrangement. Additionally, the investigation scrutinized fan rotor vibration in high-bypass ratio aero-engines, and a method was proposed to ascertain trial weight quantity and angle. The research also examined the trajectory of imbalance variation with rotor speed. Following a single on-site balance, fan rotor vibration experienced a remarkable reduction of over 80%, while low-pressure turbine rotor vibration decreased by more than 70%. This successful outcome validated both the balance theory and engineering methodology. Furthermore, it underscored the advantages of minimizing fan rotor vibration in mitigating vibrations in the low-pressure turbine rotor.
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