In the paper, based on these findings, we modeled CMG and CMG-equipped drone based on the law of conservation of momentum, and the control law is obtained by using the optimal regulator method for the linearized model of the nonlinear system. The control effect has been confirmed by simulations. Based on the feedback gain confirmed by the simulation, the experiments have shown that CMG onboard drone are effective in suppressing wind disturbances equivalent to 22 m/sec and small vibrations of 0.7 to 4 Hz.