| Citation: | WANG Dong, HONG Jie, LI Qijian, et al. Dynamic load control of intermediate fulcrum of dual rotor aero-engine[J]. Journal of Aerospace Power, 2025, 40（2）：20230252 doi: 10.13224/j.cnki.jasp.20230252
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In order to solve the problem of dynamic load control for intermediate fulcrum, a dynamic model of the intermediate fulcrum dual rotor system with equivalent mass and stiffness was established, and the key factors significantly affecting the dynamic load of intermediate fulcrum were identified through sensitivity analysis of unbalanced excitation load, gyro moment load, shaft elastic deformation restoring force, etc. Combining the project development experience, a series of methods for controlling the dynamic load of intermediate fulcrum based on the coordination of rotor balance quality and deformation status were proposed, such as rotor balance quality control, turbine disk angular deformation control, and selection of axial position of intermediate fulcrum. The proportion of strain energy and dynamic load at intermediate fulcrum were reduced by 26% and 55%, respectively. The above research was validated in project development, improving the reliability of the overall structural system.
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