Abstract: The dynamical equation of blade with impulse loading was established based on the Timoshenko beam element with considering the effect of Coriolis and centrifugal forces. The dynamic characteristics of the blade at different rotating speeds were analyzed. The results show that synchronization is produced between blade displacement and impulse loading under low speed, and the blade is in high-frequency vibration when the force is removed. Non-synchronization is observed under high engine speed because of inertia and the blade is in low-frequency due to the shorter vibration. Moreover, the displacement of blade in high speed is less than that in low speed for the effect of centrifugal rigidization.