The rotor dynamics issue of a variable speed rotor in high advance ratio was analyzed.The rotor dynamics model was built with the Hamilton principle and the middle deformation beam theory, and the aerodynamic force computing method in reverse region and the rotor trim method were corrected.Finally the rotor aeroelastic analysis model was built and the calculation in high advance ratio was contained.The rotor dynamic model was validated.By calculating the aero loads and structure loads, it was indicated that the air force would be periodically alternate and pulsed.The flap bending moment and edge bending moment increased with reducing rotor speed and would be greatly increased in resonant rotor speed region.It was validated that the periodically alternate and pulsed air force would increase the contribution of air force in structure loads.
余智豪，周云，宋彬. 大前进比变转速旋翼气弹动力学建模与载荷特性分析[J]. 振动与冲击, 2021, 40(4): 17-22.
YU Zhihao，ZHOU Yun，SONG Bin. Aeroelastic modeling and load analysis of a variable speed rotor in high advance ratio. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(4): 17-22.
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