First of all, for strength and stability, mainly a cylinder, cover the wall, the water pressure check and impeller stress test, the axis of strength checking.

As illustration, these models are applied to an attitude control dynamics simulation of a three-axis stability satellite and the corresponding toques were plotted in curves.

In this paper, a simplified method is which can be used to predict the stability boundaries of the horizontal-axis wind turbine blade undergoing the flap-pitch coupling vibrations.