An energy method was proposed to consider the effect of the wake induced by the upstream stator on the aeroelasticity of the rotor blade based on the phase lagged method

and then validated by the time-marching method. The effects of wake on aerodynamic damping of rotor blades under different modes and interblade phase angles were investigated. The results showed that the wake had a significant effect on the aeroelasticity of the rotor blades

and can be simulated by the developed method accurately and efficiently. Compared with the first torsional mode

the wake had a more serious impact on the aeroelasticity of the first bending mode. Furthermore

for different interblade phase angles

the wake can weaken the low aerodynamic damping and strengthen the high damping for the first bending mode

in contrast to the first torsion mode.